Contracting & Terminal Solutions ANSI VALVE CATALOGUE

Transcription

1 ANSI VAVE CATAOGUE

2 ANSI VAVE CATAOGUE INTRODUCTION CTS ( ) has evelope itself into a reputable company in the engineering, istribution an installation of proucts an systems for inustrial applications. At the core of our business lies a eicate an specialist line of proucts for the safe an effective transfer an storage of chemicals an hyrocarbons, covering engineere proucts such as valves, hose systems, gaskets an sealing proucts, among others. e esign, supply an install these proucts aroun the worl. A global presence has been achieve by operating several iniviual offices aroun the worl as well as a comprehensive network of agents an authorize istributors. As we have been eveloping our activities on a global scale, we are able to support our customers from offices close to their facilities. A close cooperation with leaing manufacturers together with a well balance port folio of our own engineere an manufacture proucts results in a strong partner for any inustrial prouct line. ANSI VAVES This catalogue gives you a goo iea on our abilities in the fiel of valves as per ANSI Stanars. This catalogue represents the most general range of valves within our prouct lines. e hol an extensive an excellent track recor of valves supplie to several inustries. e can prouly confirm that all our engineere proucts meet the highest international quality stanars an have been operating successfully in ifferent terminals an inustries aroun the worl, to great satisfaction of our customers. Even tough this catalogue is representing the stanar range of ANSI valves, it oes not reflect on options such as motorize valves, low emission valves, special materials or any other special requirements you might have for these valves. If you have any specific requirements than please contact us with these requirements, so we can aress these as well. QUAITY ASSURANCE e o realize that proucts supplie by us o nee to meet the highest possible stanars, in both reliability as well as urability. For this reason quality assurance is of vital importance, an we are ensuring maximum quality not only by proper quality assurance programs an proceures, but also by both internal an inepenent thir party prouct inspections. e operate accoring an auite an certifie Quality Assurance system an are in possession of an ISO 900 certificate which further unerwrites our commitment to upholing the highest quality stanars possible.

3 INDEX GATE VAVE: * ANSI Cast Steel Gate Valve 0 * ANSI Forge Steel Gate Valve GOBE VAVE: * ANSI Cast Steel Globe Valve 0 * ANSI Forge Steel Globe Valve CECK VAVE: * ANSI Cast Steel Swing Check Valve 0 * ANSI Forge Steel Check Valve * ANSI Dual Plate Check Valve BA VAVES: * Floating Ball Valve * Trunnion Ball Valve BUTTERFY VAVES: * igh Performance

4 ANSI GATE VAVE Gate valves carbon steel & stainless steel Gate valves Parallel Slie Gate Valves Series 9 Expaning Series E ege Gate Valve Series (API ) an Series 0 (API D) Slab Gate Through Conuit Valve Series 0

5 ANSI GATE VAVE ANSI Gate Valve Stanars Design an Manufacture: Steel gate valve to API or API D; corrosion resistant gate valve to API 0 or API ; Forge steel gate valve to API 0. Inspection an Test: API 9, or API D. En flange imension: ASME B. (NPS ) ; ASME B.7 series A an B, or MSS SP (NPS>). B en imension: ASME B.. Socketwel imension: ASME B.. Face to face an en to en: ASME B.0. Pressuretemperature ratings: ASME B.. Boy / Bonnet Gasket Carbon steel or stainless steel + flexible graphite combine gasket is use for Class gate valve; Stainless steel + flexiblegraphite woune gasket is use for Class gate valve; Stainless steel + flexible graphite woune gasket is use for Class gate valve an ring joint gasket is also optional for Class gate valve; Ring Joint gasket is use for Class 900 gate valve; Pressurize seal esign is use for Class 0 ~ Class 00 gate valve. Stuffing box packing Mole flexible graphite is use for packing material. PTFE or combine packing material can be also use if being requeste by the customer. The internal surface of the stuffing box, of which area is contacte with the packing, is of excellent finish (Ra. μm). The stem surface, contacting with the packing, shoul be rolle an presse after being precisely machine, so as to reach to the high finish an compactness (Ra0. μm) an ensure the reliable tightness of the stem area. Backseat Design All our gate valves have the back seating esign. In most cases, the carbon steel gate valve is fitte with a renewable back seat. For stainless steel gate valve, the back seat is machine irectly in the bonnet or is machine after weling. hen the gate valve is at fully open position, the sealing of the back seat can be very reliable. owever, as per the requirement of API, it is not avisable to a or change packing by the means of back seating when the valve is Pressure containing. Stem Design The stem is of integral forge esign. The minimum iameter of the stem is per the stanar requirement. The stem en that connects to the gate is in the form of a T. The strength of the connecting area is bigger than that of the T threae part of the stem. The strength test of that area conforms to API 9. Gate valves 0

6 ANSI GATE VAVE Gate valves Boy an Bonnet Connection The boy an bonnet of Class Class 900 gate valves are usually connecte with stus an nuts. The boy/bonnet connection of Class 0 Class 00 gate valves is usually of a pressure seal esign. Design of Disc Gate Valves with NPS are with flexible wege; Gate valves with NPS < are with soli wege. Actuation an wheel or gear box is usually use for gate valve actuation.chain wheel an electric actuator can be also use for gate valve actuation if being requeste by the customers. Stem Nut Usually, the stem nut is mae of copper alloy. It can also be mae of ASTM A9 D, on request. For large size gate valves ( NPS 0 for Class, NPS for Class, NPS for Class, NPS for Class 900), rolling bearing is fitte at two sies of the stem nut in orer to minimize the open an close torque of the gate valve. No Seat For carbon steel gate valve, the seat is usually forge steel. The sealing surface of the seat is spray wele with har alloy specifie by the customer. Renewable threae seat is use for NPS 0 gate valves, an wele on seat can be also optional if being requeste by the customer. ele on seat is use for NPS > 0 carbon steel gate valves. For Stainless steel gate valves, integral seat is usually aopte, or wel har alloy integrally, on request. Threae or wele on seat is optional for stainless steel gate valves. Special Gate Valve Besies the common gate valves, we also prouce cryogenic gate valves an bellow seale gate valves. No Part Name No Part Name No Part Name Boy antern R ing Glan Nut Bonnet 9 Backseat Bushing Pin ege 0 Nut 7 Stem Nut Seating Ring Bolt Retaining Nut Stem Glan 9 Nipple Gasket Glan Flange 0..ock Nut 7 Stem Packing Glan Eyebolt anwheel 0

7 ANSI GATE VAVE API Trim material Trim Seat ege Stem & backseat coe ring surface seat surface bushing Cr Cr A Fa CrNi CrNi A F0 7 9 Cr0Ni ar Cr S tellite Cr Cr Stellite CuNi Alloy Cr0Ni ar Cr S tellite CuNi Alloy ar Cr Cr CuNi Alloy A F0 A Fa A Fa Monel A Fa A Fa Monel Gate valves 0 CrNiMo C rnimo A F CuNi Alloy CuNi Alloy Monel Stellite C rnimo A F 9Cr9Ni 9Cr9Ni 0 Alloy ASTM Material list of API Rising Stem Cast Steel Gate Valve No Part Name Carbon Steel to ASTM Stainless Steel to ASTM Alloy Steel to ASTM Boy A CB A CB A CF A CFM A CF A CFM A7 C A7 C9 A7 C Bonnet A CB A CB A CF A CFM A CF A CFM A7 C A7 C9 A7 C ege A CB A CB A CF A CFM A CF A CFM A7 C A7 C9 A7 C Seating Ring A0N A0F A CF A CFM A CF A CFM A F A F A F Stem A Fa A F0 A F0 A F A F0 A F A F0 7 Gasket Stem Packing Graphite+S S 0, PTFE Flexible Graphite antern Ring A Fa A F0 A F0 A F A F0 A F A F0 9 Backseat Bushing A Fa A F0 A F0 A F A F0 A F A F0 0 Nut A9 A9 A9 A9 7 Bolt A9 B7 A0 7 A9 B A9 B Glan Fa A F0 A F0 A F A F0 A F A F0 Glan Flange A CB A CB A CF A CF A CF A CF A7 C 7 C9 A7 C Glan Eyebolt A9 B7 A9 B A9 B Glan Nut A9 A9 A9 7 7 Pin Stem Nut ANSI 0 A F0 A9 D/BB 9A ANSI 0 Retaining Nut ANSI 00 9 Nipple Copper Alloy 0..ock Nut ANSI 00 anwheel A97 * Suitable for S services an meet requirement of NACE MR 07 Other executions upon request. 0

8 ANSI GATE VAVE Class ANSI CTS Series (API ) CTS Series 0 (API D) Construction feature Bolte bonnet Flexible or soli wege Renewable seat (Threae or wele seat ring) " Yoke integral with bonnet 0" Separate yoke bolte to bonnet Gate valves API 9 Pressure Test Pressure ratings: Class yraulic Shell test:. MPa yraulic Seat test:. MPa Air test: 0. MPa OPEN Size Dimensions (mm) eight (Kg) Class NPS DN RF RTJ B an wheel Gear box / Class

9 ANSI GATE VAVE Class ANSI CTS Series (API ) CTS Series 0 (API D) Construction feature Bolte bonnet Flexible or soli wege Renewable seat (Threae or wele seat ring) " Yoke integral with bonnet 0" Separate yoke bolte to bonnet API 9 Pressure Test Pressure ratings: Class yraulic Shell test: 7. MPa yraulic Seat test:.7 MPa Air test: 0. MPa (OPEN) Gate valves Size Dimensions (mm) eight(kg) Class NPS DN RF RTJ B an wheel Gear box 0 0 / Class

10 ANSI GATE VAVE Class ANSI an 900 CTS Series (API ) CTS Series 0 (API D) Gate valves Construction feature Bolte bonnet Flexible or soli wege Renewable seat (Threae or wele seat ring) " Yoke integral with bonnet " Separate yoke bolte to bonnet API 9 Pressure Test Pressure ratings: Class yraulic Shell test:. MPa yraulic Seat test:. MPa Air test: 0. MPa Pressure ratings: Class 900 yraulic Shell test:. MPa yraulic Seat test: 7. MPa Air test: 0. MPa (open) Size Dimensions (mm) eight(kg) Class NPS DN RF RTJ B an wheel Gear box / Class / Class

11 ANSI GATE VAVE Class ANSI 0 an 00 CTS Series (API ) CTS Series 0 (API D) Construction feature Pressure seal w Flexible or soli wege Renewable seat (Threae or wele seat ring) " Yoke integral with bonnet " Separate yoke bolte to bonnet API 9 Pressure Test Pressure ratings: Class 0 yraulic Shell test:. MPa yraulic Seat test:. MPa Air test: 0. MPa (Open) Gate valves Size Dimensions (mm) eight(kg) Class NPS DN RF RTJ B an wheel Gear box / Class / Class

12 ANSI FORGED STEE GATE VAVES Gate valves ForgeSteel Gate Valves Construction feature Available in three bonnet esigns. The first esign is the Bolte Bonnet, with malefemale joint, spiral woun gasket, mae in F0/graphite, ring joint gasket are also available on request. The secon esign is the ele Bonnet, with a threae an seal wele joint. The thir esign is the Pressure Seal Bonnet, with a threae an pressure seal bonnet joint. Construction Full port or conventional port; Outsie screw an yoke (OS&Y); Two piece selfaligning packing glan; Bolte bonnet & spiral woun gasket seal bonnet; Bolte bonnet with spiralwoun gasket,threae an seal wele bonnet or threae an pressure seal bonnet; Integral backseat; Socket wel ens to ASME B.; Screwe ens (NPT) to ASME B.0..

13 ANSI FORGED STEE GATE VAVES Applicaton stanars Design an manufacture conform to API 0, BS, ANSI B.; Connection ens conform to ) Socket wele ASME B. ) Screw ens ASME B.0. ) Buttwele ASME B. ) Flange ens ASME B. Test an inspection conform to: API 9 Structure features Bolte bonnet, outsie screw an yoke; ele bonnet, outsie screw an yoke. Materials conform to ASTM. Main materials A0 F F F F 0() () F7 F F Monel Alloy Steel Gate valves NO. Part name Main part materials list A0/Fa A0/FaFS F/0 F/FaF F0()/0() F()/() F/F Boy Seat ege Stem A0 A0 F F F0() F)( F F 0 F 0() () F Fa Fa F0 FaF F0() F() F 0 0() () F Gasket 0+graphite 0+graphite 0+graphite 0+graphite 0+graphite +graphite +graphite Bonnet A0 A0 F F F0() F() F 7 Bolt B7 B7 7 B B(M) B(M) BM 9 0 Pin Glan Glan eyebolt F B7 B7 7 B B(M) B(M) BM Glan flange A0 A0 F F F0 F0 F0 ex nut (M) (M) M Stem nut ocking nut Nameplate A A A A A A A anwheel A97 A97 A97 A97 A97 A97 A97 7 ubricating gasket Packing Graphite Graphite Graphite Graphite Graphite Graphite Graphite Other executions upon request. Refer to certifie rawings for final execution

14 ANSI FORGED STEE TD, B AND S GATE VAVE CTS Series C Bolte bonnet, full port or reuce port outsie screw an yoke(os & Y) Threae, buttwele or socket wele ens; esign to API 0 (Open) Specification Face to face R.P F.P / / 79 / / 9 / / 0 / / 0 / 0 / / 0 anwheel iameter Gate valves (Open) eight Flow port imension eight (Kg) C900C Bolte bonnet, full port reuce port outsie screw an yoke(os&y) Threae, buttwele or socket wele ens; esign to API 0 Specification Face to face R.P F.P / / / / / 0 / / / 0. / / 0 anwheel iameter eight Flow port imension eight(kg) C0C00 ele bonnet, full port or reuce port, outsie screw an yoke(os&y) Threae, buttwele or socket wele ens; esign to API 0 Specification(NPS) F.P Pressure poun level / / / (Open) Face to face C0 0 0 anwheel iameter C eight C Flow port imension C0 7 7 eight(kg) C0.. 7 C0C00 Pressure seal bonnet, full port outsie screw an yoke(os & Y) Socket wele ens, esign conform to ASME B. Specification F.P Pressure poun level / / / / (Open) Face to face anwheel iameter C00 C eight C Flow port imension C eight(kg) C Other executions upon request. Refer to certifie rawings for final execution

15 ANSI FORGED STEE FANGED GATE VAVE CTS Series (Open) C Bolte bonnet, outsie screw an yoke(os & Y) Flangewele or buttwele ens; esign to API 0 ; BS Specification C Face to face (mm) C C anwheel iameter C eight C,C eight (Kg) Flow port imension C C C RF B RF B RF B (RF) (B) / / / / / Gate valves (Open) C900C0 Bolte bonnet, reuce, outsie screw an yoke(os & Y) Flangewele or buttwele ens; esign to API 0 ; BS Specification Face to face (mm) anwheel iameter eight Flow port imension eight (Kg) (RF) (B) (RTJ) / / / / C00 ( Open) ele bonnet, reuce, outsie screw an yoke(os & Y) Flangewele or buttwele ens; esign to API 0 ; BS Specification Face to face (mm) anwheel iameter eight Flow port imension eight (Kg) (RF) (B) (RTJ) / / / C00 (Open) Pressure seal gate valves, reuce, outsie screw an yoke(os & Y) Flangewele or buttwele ens; esign to ASME B. Face to face (mm) eight Specification anwheel iameter Flow port imension eight (Kg) (RF) (B) (RTJ) / / /

16 ANSI GOBE VAVE Steel Globe Valve Stanars Design an Manufacture: Cast steel globe valve to BS 7 an ASME B. Forge steel globe valve to API 0. Inspection an Test: API 9. En flange imension: ASME B.. B en imension: ASME B.. Socketwel imension: ASME B.. Face to face an en to en: ASME B.0. Pressuretemperature ratings: ASME B.. Globe valves The basic features of a globe valve Bolte Bonnet; Outsie Screw an Yoke; Rising stems; an rising hanwheel. Boy an Bonnet Connection The boy an bonnet of Class Class 900 globe valves are usually with stus an nuts. An the boy an bonnet of Class 0 Class 00 globe valves are usually of pressure seal esign. Gasket of Cover Flange Stainless steel + flexible graphite woune gasket is use for Class an globe valves, an ring joint gasket is also optional for Class. Ring joint gasket is use for Class 900 globe valve. Pressurize seal esign is use for Class 0 Class 00 globe valve. Actuation an wheel, impact han wheel & gear box is usually use for globe valve actuation. Chain wheel an electric actuator can be also use for globe valve actuation if being requeste by the customers. Packing Seal Mole flexible graphite is use for packing material. PTFE or combine packing material can be also use if being requeste by the customer. The internal surface of the stuffing box, of which area is contacte with the packing, is of excellent finish (Ra. μm). The stem surface, contacting with the packing, shoul be precisely machine, so as to reach to the high finish an compactness (Ra 0. μm) an ensure the reliable tightness of the stem area. Belleville Spring oae Packing System If being requeste by the customer, the Belleville spring loae packing can be aopte for enhancing the urability an reliability of the packing seal.

17 A ANSI GOBE VAVE Backseat Design All our globe valves have the back seat esign. In most cases, the carbon steel globe valve is fitte with a renewable back seat. For stainless steel globe valve, the back seat is machine irectly in the bonnet or is machine after weling. hen the globe valve is at fully open position, the sealing of the back seat can be very reliable. owever, as per the requirement of API, it is not avisable to a or change packing by mean of back seating when the valve is uner pressure. Seat For carbon steel globe valve, the seat is usually forge steel. The sealing surface of the seat is spray wele with har alloy specifie by the customer. Renewable threae seat is use for NPS 0 globe valve an wele on seat can be also optional if being requeste by the customer. ele on seat is use for NPS carbon steel globe valves. For stainless steel globe valve, integral seat is usually aopte, or to wel har alloy irectly integrally. Threae or wele on seat is also optional for stainless steel globe valve if being requeste by the customer. Stem Design The stem is of integral forge esign. The minimum iameter of the stem shall be in acc. with the requirements of the applicable stanar. Globe valves Stem Nut Usually, the stem nut is copper alloy. For large size globe valve, rolling bearing is fitte at the two sies of stem nut in orer to minimize the open an close torque of the globe valve. Special Globe Valve Besies the common globe valves, we also prouce cryogenic globe valve bellow seale globe valve Jackete globe valve, ect. No Part Name No Part Name No Part Name 7 9 Boy Bonnet Disc Seating Ring Gasket Stem Disc Nut Backseat Bushing Stem Packing 0 7 antern Ring Thrust asher Nut Bolt Antirotating Device Screw Glan Glan Flange Glan Eyebolt 9 0 Glan Nut Pin Stem Nut Bearing Retaining Nut Nipple Bevel gearbox

18 ANSI GOBE VAVE Globe valves ASTM Material list of BS7 Cast Steel Globe Valve No Part Name Carbon Steel to ASTM Stainless Steel to ASTM Alloy Steel to ASTM Boy A CB A CB A CF A CFM A CF A CFM A7 C A7 C9 A7 C Bonnet A CB A CB A CF A CFM A CF A CFM A7 C A7 C9 A7 C Disc A CB A CB A CF A CFM A CF A CFM A7 C A7 C9 A7 C Seating Ring A0N A0F A CF A CFM A CF A CFM A F A F A F Gasket Graphite+ SS0, PTFE Stem A Fa A F0 A F0 A F A F0 A F A F0 7 Disc Nut Backseat Bushing A Fa A Fa A F0 A F0 A F0 A F0 A F A F A F0 A F0 A F A F A F0 A F0 9 Stem Packing Flexible Graphite 0 antern Ring A Fa A F0 A F0 A F A F0 A F A F Thrust asher Nut Bolt Antirotating Device Glan Screw Glan Flange Glan Eyebolt Glan Nut Pin Stem Nut Bearing A Fa A F0 A9 A9 A9 B7 A0 7 ANSI 00 A9 Fa A F0 A CB A CB A9 B7 A9 ANSI 0 A F0 A F A F0 A F A9 A9 B A F0 A9 A F0 A F A F0 A F A CF A CF A CF A CF A9 B A9 A F0 A9 D/ B 9A / A F0 A9 7 A9 B ANSI 00 A9 A F0 A7 C A7 C9 A9 B A9 7 ANSI 0 A7 C Retaining Nut Nipple Bevel gearbox ANSI 00 Copper Alloy / You are center of our worl 7 Other executions upon request Please consult certifie rawing for final execution.

19 ANSI GOBE VAVE Construction feature Class ANSI CTS Series Bolte bonnet Flat or plug type isc Renewable seat (Threae or wele seat ring) 0" Thrust bearing esign w API 9 Pressure Test (open) Pressure ratings: Class yraulic Shell test:. MPa yraulic Seat test:. MPa Air test: 0. MPa Globe valves Size Dimensions (mm) eight (Kg) Class NPS DN RF RTJ B. G.O / Class Other executions upon request Please consult certifie rawing for final execution.

20 ANSI GOBE VAVE Class ANSI CTS Series Construction feature Bolte bonnet Flat or plug type isc Renewable seat (Threae or wele seat ring) 0" Thrust bearing esign w (open) API 9 Pressure Test Pressure ratings: Class Globe valves yraulic Shell test: 7. MPa yraulic Seat test:.7 MPa Air test: 0. MPa Size Dimensions (mm) eight (Kg) Class NPS DN RF RTJ B. G.O / Class Please consult certifie rawing for final execution.

21 ANSI GOBE VAVE Class ANSI /900/0 CTS Series Construction feature Pressure seal Flat or plug type isc Renewable seat (Threae or wele seat ring) " Thrust bearing esign API 9 Pressure Test Pressure ratings: Class: 900 yraulic Shell test:. MPa,. MPa yraulic Seat test:. MPa, 7. MPa Air test: 0. MPa Size Dimensions (mm) eight (Kg) Globe valves Class NPS DN RF RTJ B. G.O / Class / Class Class DN mm in D D D b n DO RTJ / Class Please consult certifie rawing for final execution. 0

22 ANSI FORGED STEE GOBE VAVE Construction feature ForgeSteel Globe Valves Are available in three bonnet esigns. The first esign is the pressure seal bonnet, with malefemale joint, spiral woun gasket, mae in F0/graphite, Ring joint gasket are also available on request. The secon esign is the wele bonnet, with a threae an seal wele joint. The thir esign is the pressureseal bonnet, with a threae an pressure seal bonnet joint. Globe valves Construction is as follows Full port or conventional port Outsie screw an yoke (OS&Y) Two piece selfaligning packing glan Bolte bonnet with spiralwoun gasket, threae an seal wele bonnet or threae an pressure seal bonnet; Integral backseat Socket wel ens to ASME B. Screwe ens(npt) to ASME B.0. Disc are plug type an upon request throttle type, neele type, ball type an check type.

23 ANSI FORGED STEE GOBE VAVE Applicable stanars Design an manufacture conform to BS, MSS SP Connection ens conform to )Socket wele ens conform to ANSI B. )Screw ens NPT to ASME B.0. )Buttwele ens conform to ANSI B. )Flange ens conform to ANSI B. Test an inspection conform to API 9 Structure features Bolte bonnet, outsie screw an yoke; ele bonnet, outsie screw an yoke. Materials conform to ASTM. A0 F F F F 0() () F7 F F Globe valves Main part materials list NO. Part name A0/Fa A0/FaFS F/0 F/FaF F0()/0() F()/() F/F Boy A0 A0+F F F+F F0() F)( F Disc Fa Fa F0 FaF F0() F() F Stem 0 0() () F Gasket 0+ graphite 0+ graphite 0+ graphite 0+ graphite 0+ graphite + graphite + graphite Bonnet A0 A0 F F F0() F() F 7 Bolt B7 B7 7 B B(M) B(M) BM Pin Glan 0 0 F 0 Glan eyebolt B7 B7 7 B B(M) B(M) BM Glan flange A0 A0 F F F0 F0 F0 ex nut (M) (M) M Stem nut ocking nut Nameplate A A A A A A A anwheel A97 A97 A97 A97 A97 A97 A97 Packing Graphite Graphite Graphite Graphite Graphite Graphite Graphite

24 ANSI FORGED STEE GOBE VAVE CTS Series 0 C Bolte bonnet, full port or reuce port outsie screw an yoke(os & Y) TD., S or B ens, esign stanar: BS (Open) Neele type isc Specification Face to face anwheel iameter R.P F.P / / / / 9 00 / / 0 0 / / 0 / 7 0 / eight 0 0 Flow port imension Globe valves (Open) Neele type isc eight(kg) C900C Bolte bonnet, reuce port or full port outsie screw an yoke(os& Y) TD.,B or S ens, esign stanar: BS Specification Face to face R.P F.P / / / / / 0 / 7. / / 7. / 7. / 0 anwheel iameter eight Flow port imension 0 0 eight(kg) C00 ele bonnet (RJ), reuce port, outsie screw an yoke(os & Y) S ens, esign stanar: ASME B (Open) ele bonnet Specification F.P / / / Face to face 0 anwheel iameter eight 9 90 Flow port imension 9 eight(kg) C00 Pressure seal bonnet, reuce port, outsie screw an yoke(os & Y) S ens, esign stanar:asme B (Open) Specification Face to face F.P / / / / 79 anwheel iameter 0 0 eight Flow port imension eight(kg)

25 ANSI FORGED STEE FANGE GOBE VAVES CTS Series 0 C (Open) (Open) B B Bolte bonnet, reuce port, outsie screw an yoke(os & Y) Flange or B ens, esign stanar: BS Specification R.P / / C 0 7 (RF) Face to face C (B) C 90 anwheel iameter C/C 0 eight C Flow port imension(mm) 9 R F..00 C B.. eight R F.. C (Kg) B..0 R F. 7. C B..7 C900C0 Bolte bonnet, reuce port, outsie screw an yoke(os & Y) Flange or B ens, esign stanar: BS Specification Face to face (mm) anwheel iameter(mm) eight(mm) Flow port imension(mm) eight (Kg) F.P (RF),(B) (RTJ) / 07 / / / / / Globe valves C00 (Open) ele bonnet ele bonnet, reuc e port, outsie screw an yoke(os & Y) Flange or B ens, esign stanar: ASME B B Specification Face to face (mm) anwheel iameter(mm) eight(mm) Flow port imension(mm) eight (Kg) F.P (RF),(B) (RTJ) / / / C00 Pressure seal bonnet, reuc e port, outsie screw an yoke(os & Y) Flange or B ens, esign stanar: ASME B (Open) B Specification Face to face (mm) anwheel iameter(mm) eight(mm) Flow port imension(mm) eight (Kg) F.P (RF),(B) (RTJ) / 0. / / /

26 ANSI SING CECK VAVE Applicable Stanars SING CECK VAVE Design an Manufacture: Steel check valve to BS, ASME B. an API D. Forge steel check valve to API 0. Inspection an test: API 9 or API D. En flange imension; ASME B. (NPS ) ASME B.7 series A an B, or MSS SP (NPS > ). B en imension: ASME B.. Socketwel imension: ASME B.. Face to face an en to en: ASME B.0 Pressuretemperature ratings: ASME B.. all thickness imension: API an BS Check valves Seat For carbon steel check valve, the seat is usually forge Steel. The sealing surface of the seat is spray wele with har alloy Specifie by the customer. Renewable threae seat is use for NPS 0 check valves, an wele on seat can be also optional if being requeste by the customer. ele on seat is use for NPS carbon steel check valves. For stainless steel check Valve, integral seat is usually aopte, or wel har alloy irectly integrally. Threae or wele on seat is also optional for stainless steel check valve if being requeste by the customer The features of a check valve Bolte Bonnet; Swing type isc; Metallic seating surfaces. BoyToBonnet Joint Stainless steel + flexible graphite woune gasket is use for Class an Class check valves; Class, an ring joint joint gasket is also optional for Class check valves; Pressure seal esign gasket is use for Class 0 an Class 00 check valves. Boy an Bonnet Connection The boy an bonnet of Class Class 900 check valves are usually with stus an nuts. An the boy an bonnet of Class 0 Class 00 check valves are usually of pressure seal esign.

27 Check valves ANSI SING CECK VAVE No Part Name No Part Name No Part Name Boy Yoke Nut Cover 7 Gasket Bolt Seat Ring Disc asher Screw Disc 9 Disc Nut ifting ug inge 0 Pin

28 ANSI SING CECK VAVE API Trim material Trim coe Seat ring surface ege seat surface inge Pin Cr Cr A Fa CrNi CrNi A F0 Cr0Ni Cr0Ni A F0 ar Cr ar Cr A Fa Stellite Stellite A Fa Cr CuNi Alloy Monel 7 Cr ar Cr A Fa Stellite Cr A Fa Check valves.no Part name Carbon Steel to ASTM 9 0 CuNi Alloy CrNiMo CuNi Alloy Stellite 9Cr9Ni ASTM Material list of BS an API D Swing Check Valve Stainless Steel to ASTM CuNi Alloy CrNiMo CuNi Alloy CrNiMo 9Cr9Ni Monel A F Monel A F 0 Alloy Alloy Steel to ASTM Boy A CB A CB A CF A CFM A CF A CFM A7 C A7 C9 A7 C Cover A CB A CB A CF A CFM A CF A CFM A7 C A7 C9 A7 C Seat Ring A0N A F A CF A CFM A CF A CFM A F A F A F Disc A CB A CB A CF A CFM A CF A CFM A7 C A7 C9 A7 C inge A CB A CB A CF A CFM A CF A CFM A7 C A7 C9 A7 C Yoke A CB A CB A CF A CFM A CF A CFM A7 C A7 C9 A7 C 7 Gasket Graphite+SS0 PTFE Disc asher A Fa A Fa A F0 A F A F0 A F A F0 9 Disc Nut A Fa A F0 A F0 A F A F0 A F A F0 0 Pin A Fa A F0 A F0 A F A F0 A F A F0 Nut A9 A9 A9 M A9 7 Bolt A9 B7 A0 7 A9 BM A9 B Screw 9 B7 A0 7 A F0 A F A F0 A F A9 B ifting ug A9 7

29 ANSI SING CECK VAVE Class ANSI an CTS Series CTS Series (Full Bore / APD) Construction feature Bolte cover Renewable seat (Threae or wele seat ring) API 9 Pressure Test Pressure ratings: Class, Class yraulic Shell test:. MPa, 7. MPa yraulic Seat test:. MPa,.7 MPa Air test: 0. MPa NPS Size Class Class eight eight DN RF RTJ B (Kg) RF RTJ B (Kg) Check valves /

30 ANSI SING CECK VAVE Contracting ting & Class ANSI an 900 CTS Series an 9 CTS Series an P(Full Bore / API D) Construction feature Bolte cover an pressure seal Renewable seat (Threae or wele seat ring) Check valves API 9 Pressure Test Pressure ratings: Class: 900 Class:0 00 yraulic Shell test:. MPa. MPa. MPa. MPa yraulic Seat test:. MPa 7. MPa. MPa.9 MPa Air test: 0. MPa NPS / 0 0 Size DN RF RTJ B Class eight (Kg) RF RTJ B Class eight (Kg) Size NPS / 0 DN RF RTJ B Class 0 eight (Kg) RF RTJ B Class eight (Kg) 9

31 ANSI IFT CECK VAVE. PISTON TYPE Class ANSI ///900 CTS Series Construction feature Bolte cover an pressure seal Renewable seat (Threae or wele seat ring) API 9 Pressure Test Pressure ratings: Class: Class: 900 yraulic Shell test:. MPa 7. MPa. MPa. MPa yraulic Seat test:. MPa.7 MPa. MPa 7. MPa Air test: 0. MPa Size Class NPS DN RF RTJ B Class 900 Class eight eight (Kg) RF RTJ B (Kg) / / / Check valves / / Size Class Class900 NPS DN RF RTJ B eight (Kg) RF RTJ B eight (Kg) /

32 ANSI FORGED STEE CECK VAVE Forge steel check valves ForgeSteel CheckValves Are available in three bonnet esigns. The first esign is the Bolte Bonnet, with malefemale joint, spiral woun gasket, mae in F0/graphite, Ring joint gasket are also available on request. The secon esign is the wele bonnet, with a threae an seal wele joint. The thir esign is the pressure seal bonnet, with a threae an pressure seal bonnet joint. The check valves are also available in three ifferent esign configurations. These are piston check, ball check, an swing checks. Construction is as follows Check valves Full port or conventional port ift type check valves Ball type check valves Swing type check valves Bolte bonnet with spiralwoun gasket, threae an seal wele bonnet or threae an pressure seal bonnet Socket wel ens to ASME B. Screwe ens (NPT) to ASME B.0.

33 ANSI FORGED STEE CECK VAVES Applicable stanars Design an manufacture conform BS MSS SP Connection ens conform to ) Scoket wele ens conform to ANSI B. ) Screw ens conform to ASME B.0. ) Buttwele ens conform to ASME B. ) Flange ens conform to ANSI B. Test an inspection conform to API 9 Structure features Bolte bonnet an pressure seal Materials conform to ASTM. Main materials A0 F F F F 0() () F7 F F Monel Alloy Steel. 7 Main part materials list NO. Part name A0/Fa A0/FaFS F/0 F/FaF F0()/0() F()/() F/F Check valves Boy A0 A0 F F F0() F)( F Seat ring F 0 F 0() () F Disc Fa Fa F0 FaF F0() F() F Gasket 0+Graphite 0+Graphite 0+Graphite 0+Graphite 0+Graphite +Graphite +Graphite Bonnet A0 A0 F F F0() F() F 7 Bolt B7 B7 7 B B(M) B(M) BM Nameplate A A A A A A A Revit A A A A A A A Steel ball ST () () ST Disc nut (M) (M) M inge 0 () () F Pin 0 0() () F

34 ANSI FORGED STEE CECK VAVES CTS Series C BB, Full Bore or Re. Bore, TD or B or S ens, Design Stanar: BS Springloa acc. to client's requirement Ball type Swing type Specification Face to face eight Flow port imension eight(kg) R.P F.P ift Swing ift Swing ift Swing ift Swing / / / / / / / / / /. 0.9 Check valves (Open) Ball type Swing type Springloa acc. to client's requirement Ball type ele bonnet C900C0 BB, Full Bore or Re. Bore, TD or B or S ens, Design Stanar: BS Specification Face to face eight Flow port imension eight(kg) C R.P F.P ift Swing ift Swing ift Swing ift Swing / / / / / / / / / / BB, Re. Bore, Flange or B ens, Design Stanar: BS Specification R.P / / / / C Face to face C C eight C C/ Flow port imension(mm) eight (Kg) C C C RF B RF B RF B (RF) (B) C BB, Re. Bore, Flange or B ens, Design Stanar: BS (Open) ele bonnet Specification C Face to face C C C eight C/ Flow port imension(mm) eight (Kg) C C C RF B RF B RF B R.P (RF) (B) / / / / Other executions upon request. Please refer to certifie rawings for final execution

35 Check valves DUA PATE CECK VAVES CTS Series an

36 DUA PATE CECK VAVES CTS Series an Check valves For etaile imensions an configurations, please ask us for our etaile rawing arrangements.

37 BA VAVES CARBON STEE & STAINESS STEE PC Floating cast Serie 7 PC floating cast Series an 9 PC floating forge Series an 9 PC trunnion forge Series 70 an 7 Ball valves Small size floating NPT Series 0 Small size floating S Series 0 PC trunnion cast Sereis an 9

38 ANSI FOATING BA VAVE Stanars Floating Ball Valve Design an Manufacture: API D, BS, ASME B. API 0, MSSSP7 Face to Face Dimension: ASME B.0 Flange Connection Dimension: ASME B. B Connection Dimension: ASME B. Test an Inspection: API 9 Firesafe Design: API 07/FA Antistatic Design & anti Blowout Stem Application Floating ball valves are suitable for various kins of pipelines of Class to Class 0, an epening on requirements soft or metallic seats can be mounte 00% bubble tight shut off an quick operation at 90, of which the operation types inclue manual, worm gear an. pneumatic or electric actuators Ball valves At lower meium pressure At higher meium pressure Reliable seat seal The structure esign of elastic sealing ring has been aopte for floating ball valves. This seat esign features a bigger sealing pressure ratio between the ring surface an the ball when meium pressure gets lower, where the contacting area is smaller. Thus, the reliable seal is ensure. hen the meium pressure gets higher, the contacting area between seat ring an ball becomes bigger as the sealing ring transforms elastically to unertake the bigger force pushe by the meium without any amage. Antistatic feature AntiStatic esign for ball valve mm AntiStatic esign for ball valve mm 7

39 ANSI FOATING BA VAVE Fire safe esign ith the valve heate in a fire application, the nonmetal material parts such as seat sealing ring of PTFE, stem back seat gasket, glan packing, an the sealing gasket between boy an bonnet might isintegrate or amage ue to high temperature. Auxiliary metal to metal seal is provie to effectively prevent both internal an external leakage of the valve. As require by customers, our floating ball valves meet the requirement of API 07, API FA,BS 7. Reliable stem seal The blowout proof esign has been aopte for the stem to ensure that even if the pressure in the boy cavity has risen acciently an the stuffing box becomes invali, the stem may not be blown out by meium. The stem features the esign with a backseat, being assemble from unerneath. The sealing force against the backseat gets higher as the meium pressure becomes higher. So the reliable seal of the stem can be assure uner variable meium pressure. Stem assemble from unerneath may not be blown out by meium Stem assemble ownwar may be blown out V type packing structure has been employe to effectively transform the pushing force of the glan flange an the meium pressure into the sealing force against the stem. Ball valves Fire safe esign of valve boy an bonnet flanges Mounting pa provie Our valves are being supplie with a ISO mounting pa an locking evice features. open & close ockable hole ockable hole Packing before presse Packing after presse rong operation prevention To prevent the ball valve from wrong operation, the keylock with 90 of open an close positioning pa has been provie, which can be lockable as require. At the stem hea, where the lever fixes, a flat is esigne so that the valve opens with the lever in parallel to piping, an with the lever rightangle to the piping, the valve is close. So, it is ensure that the inicator of open an close position, can never be wrong. Stem You are center of our worl

40 ANSI FOATING BA VAVE Ball valves ASTM Material list of floating ball valve No Part Name Carbon Steel to ASTM Stainless Steel to ASTM Boy Bonnet Ball Stem A CB A CB A CG A Fa A CB A CB A CB A F0 A CF A CF A CF A F0 A CFM A CFM A CFM A F A CF A CF A CF AA F0 A CFM A CFM A CFM A F Seat ring FTFE, RTFE, PEEK, DERIN Gasket Graphite+SS0, PTFE 7 Oring Fluororubber Bolt A9 B7/B7M A9 7/7M A9 B/BM 9 Nut A9 /M A9 /M 9 /M 0 Small spring SS0 Small ball SS Thrust washer Stem packing Packing glan Shaft sleeve Screw Positioning plate Rataining ring ever Gasket Screw PTFE Flexible Graphite/PTFE A CB A CB A CF A CFM A CF A CFM PTFE A9 B7 A0 7 A9 B/BM Galvanize Steel Carbon Steel Carbon Steel Carbon Steel Carbon Steel 9

41 ANSI FOATING BA VAVE Class ANSI CTS Series CTS Series 9 (API D) CTS Series (Full bore / API D) Construction feature Close joint an no leakage at mile flange. Antistatic an blowout proof stem. Firesafe esign Split boy ocking evice ISO mounting pa B0 P P API 9 Pressure Test M0 P Pressure ratings: Class yraulic Shell test:. MPa yraulic Seat test:. MPa Air test: 0. MPa M B P Pressure Nominal iameter mm 0 in / / Flange Butt weling anoperate Air riving an hyraulic riving M M0 B B0 P P P P orm gear 0 Electric riving RF. eight (Kg) B. Ball valves / / Class /

42 ANSI FOATING BA VAVE Class ANSI CTS Series CTS Series 9 (API D) Construction feature Close joint an no leakage at mile flange. Antistatic an blowout proof stem. Firesafe esign; Split boy. ocking o evice ISO mounting pa B0 API 9 Pressure Test M0 Pressure ratings: Class yraulic test: 7. MPa yraulic test:.7 MPa Air test: 0. MPa M B Ball valves Pressure Nominal iameter mm 0 in / / Flange Butt weling anoperate M M0 B B0 P P P P orm gear 0 Air riving an hyraulic riving Electric riving RF.. eight (Kg) B / / Class / Other ball valve types; such as one piece boy; reuce bore, upon request Please consult certifie rawings for final execution

43 ANSI FOATING BA VAVE Class ANSI CTS Series CTS Series 9 (API D) Construction feature Close joint an no leakage at mile flange. Antistatic an blowout proof stem. Firesafe esign Split boy. ocking evice; ISO mounting pa B0 P P o API 9 Pressure Test P Pressure ratings: Class 00 yraulic test:. MPa yraulic test:. MPa Air test: 0. MPa B P Pressure Nominal iameter mm in / Flange Butt weling anoperate M M0 B B0 P P P P orm gear Air riving an hyraulic riving Electric riving RF 7. eight (Kg) B Ball valves 0 / / / Class / Other ball valve types; such as one piece boy; reuce bore, upon request Please consult certifie rawings for final execution

44 ANSI FOATING BA VAVE Floating Ball valves, small sizes, female threae Forge carbon steel. CTS SERIES 0 Ball valves For etaile imensions an configurations, please ask us for our etaile rawing arrangements

45 Ball valves Terminal Solutions ANSI FOATING BA VAVE Floating Ball valves, small sizes, socket wel Forge carbon steel. CTS SERIES 0 For etaile imensions an configurations, please ask us for our etaile rawing arrangements

46 ANSI TRUNNION BA VAVE Trunnion Ball Valve Construction feature Design an Manufacture: API D, BS, ASME B. API 0, MSSSP7 Face to Face Dimension: ASME B.0 En flange imension: ASME B. (NPS ) ASME B.7 series A an B, or MSS SP( NPS>) B Connection Dimension: ASME B. Test an Inspection: API 9 Firesafe esign: API 07/FA Antistatic esign & anti Blowout Stem Construction feature Accoring to customers' requirement, the trunnion ball valves are provie with evices for urgent grease injection, which are on both the stem an seat for the trunnion ball valves of DN>mm (NPS), an in the boy cavity for the valve of DN<mm. hen the Oring of stem or the boy seat ring is amage ue to accient, the meium leakage between boy an stem can be prevente by injecting the sealing grease through the evice. Ball valves Construction feature Each seat of the ball valve can separately cut off the meium at both inlet an outlet of the valve to realize oubleblock functions. hen the ball valve is close, boy cavity an two of the boy ens can be blocke with each other even if both the inlet an outlet are uner pressure, when the meium left in the boy cavity might be blea through the relief valve. Construction feature Blowout proof structure is provie with for the stem, which is positione by the upen cap an screw, being guarantee not to be blownout by the meium even if at abnormal risen pressure in the cavity.

47 ANSI TRUNNION BA VAVE Antistatic esign Ajusting cushion Fire safe esign ith the valve heate in a fire application, the nonmetal material parts such as seat sealing ring of PTFE, O ring for the stem, an sealing gasket for boy an bonnet, might be amage ue to high temperature. Our special esign of auxiliary metal to metal or the graphite seal is provie to effectively prevent both internal an external leakage of the valve. Our fire safe esign for the trunnion ball valve meets the requirement of API 07, API Fa, BS 7. The Bisealing esign structure Seat behin the ball Boy cavity relief As the liqui meium left in the boy cavity gasifies ue to increase temperature, the pressure in the boy cavity becomes abnormally higher, in which case the meium itself in the cavity woul propel the seat an selfrelieves the pressure to ensure the safety of valve. Ball valves Fire safe esign of valve boy an bonnet flanges Fire safe esign of stem Mounting pa provie acc. to ISO Mounting pa for fixing the actuators, such as worm gear, pneumatic, electric, hyraulic, an pneumatic & hyraulic actuators, is incorporate.

48 ANSI TRUNNION BA VAVE Ball valves No Part Name Boy Bonnet Ball Stem Gasket Seat Clamping ring Seat ring Seat back Oring Seat gasket Stuffing box Bolt Nut Spring Screw Gasket Flat key Shaft sleeve Stem packing Thrust washer Packing glan Shaft sleeve Support plate Yoke Pin Small check valve Grease injector Vent plug Drain plug ifting lug Support feet ASTM A0N ASTM A0N A CF A Fa A0N+ENP A0N+ENP A0N+ENP A0N+ENP A9 B7/B7M A9 /M A9 B7 ASTM A0N ASTM A0N ASTM A0N Garbon steel Garbon steel Garbon steel ASTM Material list of cast steel trunnion mounte ball valve Carbon Steel to ASTM A0 F A0 F A0 F A F0 A F0 A F A F0 SS0 +Graphite, PDFE F+ENP A F0 A F A F0 A F A F F+ENP A F0 A F A F0 A F A F PTFE, RTFE, PEEK, DERIN F+ENP A F0 A F A F0 A F A F Fluororubber Flexible Graphite F+ENP A F0 A F A F0 A F A F A0 7/7M A9 B/BM A9 /M A9 /M INCONE X70 A0 7 A9 B/BM PTFE Cabon Steel PTFE PTFE Flexible Graphite PTFE A0 F A0 F A0 F Garbon steel Garbon steel Garbon steel A F0 A F0 A CF A F0 A F0 A F0 A F0 A F0 A F0 Stainless Steel to ASTM A F A F A CFM A F PTFE A F Carbon Steel Carbon Steel A F A F A F A F Carbon Steel Carbon Steel A F0 A F0 A CF A F0 A F0 A F0 A F0 A F0 A F0 A F A F A CFM A F A F A F A F A F A F A F A F A F CDMCU A F A F A F A F A F A F A F 7 Other executions an valve types, such as pce boy an reuce bore available upon request Consult the certifie rawings for final execution

49 ANSI TRUNNION BA VAVE CTS Series 7 Construction feature Close joint an no leakage at mile flange Antistatic an blowout proof stem Firesafe esign; Split boy; ocking evice P P Selfrelieving seat; Emergency sealing evice; ISO mounting pa B0 M0 Construction feature P Pressure ratings: Class M B P yraulic Shell test:. MPa yraulic Seat test:. MPa Air test: 0. MPa Pressure Nominal iameter Flange Butt weling anoperate mm in M M0 B B0 P P P P / orm gear Air riving an hyraulic riving Electric riving RF eight (Kg) B Ball valves Class Upon request other executions an valve types are available, such as pce boy, full an reuce bore. Consult the certifie rawings for final execution

50 ANSI TRUNNION BA VAVE CTS Series 7 Construction feature Close joint an no leakage at mile flange; Antistatic an blowout proof stem; Firesafe esign; Split boy; ocking evice; Selfrelieving seat; Emergency sealing evice ISO mounting pa. B0 M0 0 API 9 Pressure Test Pressure ratings: Class yraulic Shell test: 7. MPa yraulic Seat test:.7 MPa Air test: 0. MPa M B Ball valves Pressure Nominal iameter Flange Butt weling anoperate mm in M M0 B B0 P P P P / 07 0 orm gear Air riving an hyraulic riving Electric riving RF 0 eight (Kg) B Class Upon request other executions an valve types are available, such as pce boy, full an reuce bore. Please consult certifie rawings for final execution

51 ANSI TRUNNION BA VAVE CTS Series 7 Construction feature Close joint an no leakage at mile flange; Antistatic an blowout proof stem; Firesafe esign; Split boy; ocking evice; Selfrelieving seat; Emergency sealing evice; ISO mounting pa. B0 P P 0 API 9 Pressure Test P Pressure ratings: Class B P yraulic Shell test:. MPa yraulic Seat test:. MPa Air test: 0. MPa Pressure Nominal iameter Flange Butt weling anoperate mm in M M0 B B0 P P P P / orm gear 70 0 Air riving an hyraulic riving Electric riving RF eight (Kg) B 9 Ball valves Class Upon request other executions an valve types are available, such as pce boy, full an reuce bore. Please consult certifie rawings for final execution 0

52 ANSI TRUNNION BA VAVE CTS Series 7 Construction feature Close joint an no leakage at mile flange; Antistatic an blowout proof stem; Firesafe esign; Split boy; ocking evice; P P Selfrelieving seat; Emergency sealing evice ISO mounting pa. B0 M0 API 9 Pressure Test P Pressure ratings: Class 900 M B P yraulic Shell test:. MPa yraulic Seat test: 7. MPa Air test: 0. MPa Ball valves Pressure Nominal iameter Flange Butt weling anoperate mm in M M0 B B0 P P P P / orm gear 70 0 Air riving an hyraulic riving Electric riving RF eight (Kg) B Class Upon request other executions an valve types are available, such as pce boy, full an reuce bore. Please consult certifie rawing for final execution

53 ANSI TRUNNION BA VAVE CTS Series 7 Construction feature Close joint an no leakage at mile flange; Antistatic an blowout proof stem; Firesafe esign; Split boy; ocking evice; Selfrelieving seat; Emergency sealing evice ISO mounting pa. B0 M0 0 API 9 Pressure Test Pressure ratings: Class 0 yraulic Shell test:. MPa yraulic Seat test:. MPa Air test: 0. MPa M B Pressure Nominal iameter Flange Butt weling anoperate mm in M M0 B B0 P P P P / orm gear 0 70 Air riving an hyraulic riving Electric riving eight (Kg) RF B 0 0 Ball valves Class Upon request other executions an valve types are available, such as pce boy, full an reuce bore. Please consult certifie rawing for final execution

54 b ANSI IG PERFORMANCE BUTTERFY VAVE Sealing principle of b eccentric PBV igh Performance Butterfly Valve A b a Boy Disc Sealing Ring A Boy Centerline AA a b Valve Shaft Centerline Boy Centerline Sealing Section y Sealing Structure of Double Eccentric Seal Butterfly Valve Butterfly valves A b eccentric is forme up between the centerline of seat an the centerline of boy on the base of ouble eccentric butterfly valve, making isc sealing face immeiately isengage from seat sealing face upon the opening of butterfly valve, an in close contact with the seat sealing face upon closing. hen fully opene, a gap 'Y', which is the same as that in ouble eccentric seal butterfly valve, is forme up between the two sealing faces. The esign of this type of valves has thoroughly eliminate the mechanical wear an scratch between the two sealing faces, making the sealing performance an service life of butterfly valves greatly improve.hen valve is close, with sealing ring uner the extrusion of boy sealing face an isc, two upwar elastic eformations are prouce. The long an short shafts prouce elastic eformation of ifferent irections, thus to maximizing the sealing force between the sealing faces of valve. This istinctive eccentric combination not only uses cam effect, but also eliminates friction completely, thus to ensure no friction between seat an sealing ring on isc uring the 90 stroke of valve, a perfect solution to clear away the possibilities of abrasion an leakage. a a Boy AA a Disc Valve Shaft Centerline Sealing Ring Disc Centerline A A Boy Centerline b Sealing Section y Close State Diagram of Triple Eccentric Seal Butterfly Valve Open State Diagram of Triple Eccentric Seal Butterfly Valve Sealing Principle of Triple Eccentric Seal Butterfly Valve