TECHNICAL DATASHEET DUO-CHEK High Performance Non-Slam Check Valves

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1 brands you trust. TEHNIL DTSHEET DUO-HEK High Performance Non-Slam heck Valves

2 Retainerless heck Valves Style H High Performance heck Valve for ritical pplications For critical applications, Duo-hek Retainerless heck valves Style H feature a one-piece body with no pin retainer penetration through the body. These high performance valves utilize the same internal design of other Duo-hek valves with all the unique features and advantages built into them. The photo shown is a wafer valve however, designs apply to wafer, lug and double flange. Item Part No. No. 1 ody 2 Plate 3 Seal 4 Stop Pin 5 Hinge Pin 6 Spring* 7 Pin Insert 8 Snap Ring 9 ody earing 10 Plate earing 11 Spring earing * Independent spring in valve sizes 6" and larger. Section ecause Duo-hek Retainerless heck valves have no body penetrations, potential leak paths through the valve are eliminated. This makes the Retainerless heck ideally suited to meet the following critical service applications: Hydrocarbon processing hemical processing ny industry concerned with fire hazards or environmental safety Key features of the Duo-hek Retainerless heck valve Style H include: wide selection of body and plate materials choice of metal-to-metal or resilient sealing full range of pressure classes and sizes variety of end connections Designs available include wafer, lug and double flange Internals easily removed for field replacement under normal inspections and maintenance procedures places Section Flow Direction This view is rotated 90 to show the actual operating position of the valve. The pin must be vertical for horizontal flow. The advanced design of the Duo-hek provides many operational benefits to the user, which combined with its more compact size and lower weight, make the Duo-hek Retainerless heck valve Style H an excellent alternative to a standard swing check valve. Remarkable advantages include: Independent spring action (on 6" and larger) and plate suspension on larger valves Free release flat seats Springs provide superior response to flow reversal or deceleration Minimal water hammer Savings in purchase price and installation costs compared to a conventional swing check valve Single body design with no body cartridge Installation dimensions for these valves are as shown on pages

3 Dimensions Wafer Styles G (Retainered) and H (Retainerless) D Ring Joint Facing Flow Direction Serrated Minimum Flange ore This view is rotated 90 to show the actual operating position of the valve. The pin must be vertical for horizontal flow. Raised Face Valves Only Plain Face (lass 125 only) Section Wafer body valves are designed with flangeless bodies with short face-to-face dimensions per PI 594. They are clamped between mating flanges which are connected by studs and nuts. SME lass 125 (ast Iron valves only) Size D Weight in mm 2" " " " " " " " " " " " " " " " " " " " " " " " " SME lass 150 Size D Weight in mm 2" " " " " " " " " " " " " " " " " " " " " " " " " " Duo-hek valves are available in accordance with DIN, S, JIS, S and ISO Dimensions. For other sizes and pressure classes contact factory. lass 125 face-to-face dimensions 2-½"-12" are thinner than the requirements of PI 594. These G Style valve dimensions do not meet PI 594, please consult factory. 3

4 Dimensions Wafer Styles G (Retainered) and H (Retainerless) SME lass 250 (ast Iron valves only) Size D Weight in mm 2" " " " " " " " " " " " " " " " " " SME lass 300 Size D Weight in mm 2" " " " " " " " " " " " " " " " " ¼ " " SME lass 600 Size D Weight in mm 2" " " " " " " " " " " " " " " " " " SME lass 900 Size D Weight in mm 2" " " " " " " " " " " " " " SME lass 1500 Size D Weight in mm 2" " " " " " " " " " " " " " SME lass 2500 Size D Weight in mm 2" " " " " " " " " These G Style valve dimensions do not meet PI 594, please consult factory.

5 Dimensions Style H Double Flange Retainerless Double Flanged Style Valves bolt up similar to a bolted cap swing check or gate valve. Double flanged versions are offered as standard on larger size valves where the lay length of the body permits installation of two heavy nuts between the flanges. These valves are standard retainerless design. SME lass 150 Pin must be vertical for horizontal flow. 8" " " " " " " " " " ½ " " " " " " " " " 2200 SME lass " " " " " " " " " " " " Flow Direction SME lass " " " " " " " " " " SME lass " " " " " " " " " Notes: Sizes not available in double flange design are offered as lug body design, see page 16. Please consult factory for other sizes and pressure classes available. onsult factory for dimensions and weights not shown. 5

6 Dimensions Style H Lug Retainerless Lug Style valves cover the bolting the entire length of the body. Lug valves are furnished in scallop and full body designs. Scallop is furnished whenever possible to keep weight to a minimum. These valves are standard retainerless design. Lug valves are furnished with thru-hole bolting in accordance with PI 594. Threaded bolt holes are available but non standard as valve is not designed nor should be used for dead-end service. Thru hole Minimum Flange ore Thru hole SME lass 600 Scallop Pin must be vertical for horizontal flow. SME lass 150 2" " " " " " SME lass 300 2" " " " " " " " " " " " " " " onsult factory for additional sizes and pressure classes. Full ody Flow Direction SME lass 900 2" " " " " " SME lass " " " " " " " " " " " " SME lass " " " " " " "

7 Dimensions Style X Extended ody Wafer heck The "Extended ody" version of the Duo-hek was designed for extremely fast opening conditions. These types of applications are generally associated with compressed gas or steam that causes damage from the explosive opening effect on the closure mechanism. This damage can render them inoperative. This is especially true with slow response valves such as swing and titling disc check valves. Typical applications include centrifugal compressor discharge where compressors are subject to "surging", air separation plants, pipelines where compressors are mounted in parallel, and steam extraction. Style X Duo- hek valves are generally not required for liquid applications. Extended ody Duo-hek Plate The Style X body design has special geometry and plate configuration to allow each plate to strike the stop pin in its center of percussion. To absorb high impacts, the stop pin and hinge lugs are oversized. Installation Dimensions Pressure lasses SME lass " " " " " " " " " " " " " " SME lass " " " " " " " " " " " " onsult factory for additional sizes and pressure classes. Pin must be vertical for horizontal flow. Flow Direction Regular ody Duo-hek Plate SME lass " " " " " " " " " " " SME lass " " " " " " " SME lass " " " " " " " SME lass " "

8 DIN Wafer Valve Outside Diameter of ody PN 6, 10, 16 (SME lass 150) PN 25, 40 (SME lass 300) Size PN (DIN)* in mm mm in 2" " " " " " " " " " " " " " " " " " " Size PN (DIN)* in mm mm in 2" " " " " " " " " " " " " " PN 64, 100 (SME lass 600) Size PN (DIN)* in mm mm in 2" " " " " " " " " " " " " PN 160 (SME lass 900) Size PN (DIN)* in mm mm in 2" " " " " " " " " PN 250 (SME lass 1500) Size PN (DIN)* in mm mm in 2" " " " " " " " " PN 320 (SME lass 2500) Size PN (DIN)* in mm mm in 2" " " " " " " " *Dimension applies to drawing on page 13. Other dimensions for SME lasses shown apply to these valves with DIN outside diameters. 8

9 Stud Selection Wafer Styles G (Retainered) and H (Retainerless) Raised face flanges Min D Min Ring joint flanges SME lass 125 (ast Iron valves only) Valve No. of Size Studs olt Diameter Flat Face in mm in mm in mm 2" " " " " " " " " " " " " " " " " " " " " " " " " " Stud dimensions apply to styles G & H for Lug style thru-hole bolting design. SME lass 150 2" " " " " " " " " " " " " " " " " " " " " " " " " "

10 Stud Selection Wafer Styles G (Retainered) and H (Retainerless) SME lasses 250 (ast Iron valves only) & 300 * 2" " " " " " " " " " " " " " " " " " " *vailable in lass 300 only. SME lass 600 2" " " " " " " " " " " " " " " " " " Stud dimensions apply to styles G & H for Lug style thru-hole bolting design. SME lass 900 2" " " " " " " " " " " " " SME lass " " " " " " " " " " " " " SME lass " " " " " " " "

11 Installation & Stud Selection PI 6 Minimum Flange ore PI Installation Dimensions - lass 3000 in in mm in mm in mm lbs. kg " " " " " " " " PI Installation Dimensions - lass 2000 in in mm in mm in mm lbs. kg " " " " " " " " PI Installation Dimensions - lass 5000 in in mm in mm in mm lbs. kg " " " " " " " NOTES: Dimensions for and ratings available on request. llowable leakage rates for PI 6 (also PI 6D) metal seated valves in accordance with PI 598. Min PI Stud Selection - lass 3000 Size No. of in Studs in mm in mm " " " " " " " " PI Stud Selection - lass 2000 Size No. of in Studs in mm in mm " " " " " " " " PI Stud Selection - lass 5000 Size No. of in Studs in mm in mm " " " " " " "

12 Stud Selection - Pressure lasses Style X Extended ody Wafer heck Raised face flanges Minimum D Minimum Ring joint flanges SME Stud Selection lass " " " " " " " " " " " " " " SME Stud Selection lass " " " " " " " " " " " " SME Stud Selection lass " " " " " " " " " " " SME Stud Selection lass " " " " " " " SME Stud Selection lass " " " " " " " SME Stud Selection lass " "

13 Technical Data Valve oefficient v and verage Spring Force (lass ) Valve Size v Spring Force in mm (psi) 2" ½" " " " " " 200 1, " 250 2, " 300 4, " 350 5, " 400 8, " , " , " , " , " , " , " , " ,000-60" ,000-66" ,000-72" ,000 - oefficients for sizes above 72" please consult factory. Spring Force is an estimate of the pressure required to overcome the spring when valve is closed. This is not exact as valve cannot be used as a relief valve. Valves 6" and larger have independent springs. Pressure Loss Information The curves show pressure loss available with the Duo-hek in horizontal flow. Duo-hek valves should be installed in horizontal flow with pins vertical for best performance. For other installations, contact the factory. Each piping system has a unique geometry which should be evaluated whenever the liquid media velocity exceeds 8 feet/ second (2.4m/sec) through a swage or expansion (15 or greater included angle) directly upstream of the valve. Where practicable, for maximum service life, and based on actual service, a minimum of one (1) to five (5) pipe diameters distance should be maintained between the valve and the pump discharge and pipe fittings (swages or expansion). Systems with drastic flow decelerations may require higher torque springs for faster valve response and to reduce water hammer for non-slam applications. Please consult the factory. We can evaluate Duo-hek valves relative to your system behavior Pressure Loss hart (lass ) HED LOSS IN METERS OF WTER HED LOSS IN FEET OF WTER " VLVE 2 1/2" 3" 4" 5" 6" 8" 10" 12" 14" 16" 18" 20" 24" 30" 36" 42" 48" 54" 60" 66" 72" LOSSES SHOWN SES ON WTER T 60 F WITH SP. GR. OF GLLONS PER MINUTE LITERS PER SEOND

14 RNE Energy Flow Solutions RNE Energy Global Headquarters Duo-hek ustomer Service 4526 Research Forest Drive, Suite 400 The Woodlands, Texas U.S.. Tel.: (1) Fax.: (1) Sydney, ustralia Operations Dunheved ircuit St. Mary's NSW 2760 Tel: (61) Fax: (61) elfast, Northern Ireland Operations 6 lexander Road regagh, elfast T6 9HJ Tel: 44 (28) Fax: 44 (28) NULER EG-D-T-EN-L (V-600) rane o., and its subsidiaries cannot accept responsibility for possible errors in catalogues, brochures, other printed materials, and website information. rane o. reserves the right to alter its products without notice, including products already on order provided that such alteration can be made without changes being necessary in specifications already agreed. ll trademarks in this material are property of the rane o. or its subsidiaries. The rane and rane brands logotype (loyco, enter Line, ompac-noz, rane, Duo-hek, Flowseal, Jenkins, Krombach, Noz-hek, Pacific Valves, Stockham, Triangle, Uni-hek ) are registered trademarks of rane o. ll rights reserved RNE Energy Flow Solutions,