GIGS SERIES DIRECT GAS ACTUATORS SPRING RETURN CONFIGURATION

Transcription

1 GIGS SERIES DIRECT GAS ACTUATORS SPRING RETURN CONFIGURATION

2 Table of Contents GIGS Spring Return Gas Powered Actuator General and Features pag. 1 Cut-away Drawing and Technical Data pag. 2 Output Torque Tables pag. 3 Overall Dimensions pag. 8 GIGS Materials and Sectional Tables pag. 10 GIGS Typical Control Schematics pag. 18 GIGS Sizing Criteria pag. 21 GIGS Accessories Mounting Holes pag. 24 GIGS Enquiry and Ordering Data pag. 25

3 GIGS Spring Return Gas Powered Actuator Spring return GIGS actuator for 90 operation for On-Off service General The GIGS gas spring return actuator series was engineered and is manufactured to provide fail safe operation for any quarter turn application such as ball, plug, butterfly valves. Simplicity, reliability and economy are at the top of the list of design parameters. The spring module incorporates up to four springs, fully encapsulated in a factory-welded cartridge. This ensures safety to personnel and ease of assembly. Features - Totally enclosed, weatherproof housing in fabricated carbon steel for maximum strength - Canted scotch yoke actuators are the proper solution to motorise the most common type of quarter-turn valves, due to their dedicated torque trend; they are suited to the larger valve sizes where high break away torques are required or for valves with high working pressure - Symmetric scotch yoke actuators available for special applications - External travel stops for precise angular stroke adjustment between 82 and 98 - Hard chromium plated and polished guide bar and piston rod for corrosion resistance and minimal friction - Bushings made of bronze or sintered bronze, charged with teflon, to provide minimal friction and extended service life - Electroless nickel plated and polished cylinder for corrosion resistance and minimal friction - Piston and piston rod seals made by a teflon ring precharged by an O-ring provide low hysteresis and high sensitivity of actuator, preventing sticking problems - Hand pump manual override available - Spring module to provide fail-safe operation - The spring return pack incorporates up to four springs, fully encapsulated in a factory welded cartridge: this ensures safety to personnel and simplifies assembly - The spring action can be easily changed in the field from to close in to open or viceversa (modular design) - An extensive range of accessories are available: - limit switch boxes explosionproof, intrinsically safe and/or weatherproof; limit switches can be provided in different types according to customer requirements - position transmitters explosionproof, intrinsically safe and/or weatherproof - gas filters - solenoid valves - explosionproof, intrinsically safe and/or weatherproof; - control units for on-off service, derived from Biffi high pressure controls used for GPO and GIG actuators normally enclosed in proper aluminium cabinet - poppet-type (no leakage) control valves - flow regulators, relief valves valves - electric pressure switches - terminals enclosures, explosionproof or intrinsically safe and/or weatherproof - Special coatings for offshore or corrosive environments 1

4 GIGS Spring Return Gas Powered Actuator 2 Item Name 1 Housing 2 Yoke 3 Yoke bushing 4 Cover 5 Guide block pin 6 Sliding block 7 Guide block 8 Guide bar 9 Guide block bushing 10 Travel stop screw 11 Cylinder head flange 12 Piston rod bushing 13 Piston rod O-ring 14 Piston rod seal ring 15 Piston rod 16 Piston 17 Piston O-ring 18 Piston seal ring 19 Piston guide sliding ring 20 Cylinder tube 21 End flange 22 Sealing washer 23 Travel stop screw 24 Tie rod 25 Spring container 26 Spring 27 Container rod 28 Container rod bushing 29 Spring thrust flange 30 Guide rod 31 Guide rod bushing Technical data Supply pressure : 105 bar g maximum Supply fluid : - natural gas - compressed air - nitrogen Ambient temperature : -30 C to +100 C Special versions for service outside this range on request Spring ending torques : from 390 up to Nm Higher values with special versions GIGS actuators Gas displacement Model litres

5 GIGS Spring Return Gas Powered Actuator Output Torques for Spring to Close Canted Yoke Mechanism (in danm) Operating supply pressure (bar g) Spring Torque Model SET SRT SST GST GRT GET GST GRT GET GST GRT GET GST GRT GET GST GRT GET GST GRT GET GST GRT GET CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL Notes - Max allowable pressure 105 bar g (static pressure applicable to fully stroked actuator against the travel stop) - Angular positions: 0 Closed 45 Intermediate 90 Open - SET: Spring Ending Torque to close (0 ) SRT: Spring Running Torque (45 ) SST: Spring Starting Torque to close (90 ) GST: Gas Starting Torque to open (0 ) GRT: Gas Running Torque (45 ) GET: Gas Ending Torque to open (90 ) 3

6 GIGS Spring Return Gas Powered Actuator Output Torques for Spring to Open Canted Yoke Mechanism (in danm) Operating supply pressure (bar g) Spring Torque Model SST SRT SET GET GRT GST GET GRT GST GET GRT GST GET GRT GST GET GRT GST GET GRT GST GET GRT GST OP OP OP OP OP OP OP OP OP OP OP OP OP OP OP OP OP OP OP OP OP OP OP OP OP OP OP OP OP OP Notes - Max allowable pressure 105 bar g (static pressure applicable to fully stroked actuator against the travel stop) - Angular positions: 0 Closed 45 Intermediate 90 Open - SST: Spring Starting Torque to open (0 ) SRT: Spring Running Torque (45 ) SET: Spring Ending Torque to open (90 ) GET: Gas Ending Torque to close (0 ) GRT: Gas Running Torque (45 ) GST: Gas Starting Torque to close (90 ) 4

7 GIGS Spring Return Gas Powered Actuator Output Torques for Spring to Close Symmetric Yoke Mechanism (in danm) Operating supply pressure (bar g) Spring Torque Model SET SRT SST GST GRT GET GST GRT GET GST GRT GET GST GRT GET GST GRT GET GST GRT GET GST GRT GET 0.3S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL S CL Notes - Max allowable pressure 105 bar g (static pressure applicable to fully stroked actuator against the travel stop) - Angular positions: 0 Closed 45 Intermediate 90 Open - SET: Spring Ending Torque to close (0 ) SRT: Spring Running Torque (45 ) SST: Spring Starting Torque to close (90 ) GST: Gas Starting Torque to open (0 ) GRT: Gas Running Torque (45 ) GET: Gas Ending Torque to open (90 ) 5

8 GIGS Spring Return Gas Powered Actuator Output Torques for Spring to Open Symmetric Yoke Mechanism (in danm) Operating supply pressure (bar g) Spring Torque Model SST SRT SET GET GRT GST GET GRT GST GET GRT GST GET GRT GST GET GRT GST GET GRT GST GET GRT GST 0.3S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP S OP Notes - Max allowable pressure 105 bar g (static pressure applicable to fully stroked actuator against the travel stop) - Angular positions: 0 Closed 45 Intermediate 90 Open - SST: Spring Starting Torque to open (0 ) SRT: Spring Running Torque (45 ) SET: Spring Ending Torque to open (90 ) GET: Gas Ending Torque to close (0 ) GRT: Gas Running Torque (45 ) GST: Gas Starting Torque to close (90 ) 6

9 GIGS Spring Return Gas Powered Actuator Maximum Operating Torque Model Max operating torque (Nm) Notes - Max allowable pressure 105 bar g (static pressure applicable to fully stroked actuator against travel stop) - Add S to the model number to identify actuators with symmetric yoke (i.e. 0.3S ) - Add CL or OP to the model number to identify spring to close or spring to open (i.e CL) 7

10 GIGS Spring Return Gas Powered Actuator Overall dimensions for spring to close actuators F A G D E top view Air breather ØH P N Q C B M L K Only for models 14 and 18 Mounting Bracket (optional) Air breather Gas connection Y Gas connection X Dimensions in mm Model A B C D E F G ØH K L M N P Q Gas connection NPT Weight X Y (Kg) CL / CL / CL / CL / CL / CL / CL / CL / CL / CL / CL / CL / CL / CL / CL / CL / CL / CL / CL / CL / CL / CL Ø / CL / CL / CL Ø / CL / CL / CL Ø / CL / CL Ø / Notes 1. Dimensions and weights given are with oil and without optional bracket or adaptor flange 2. For mounting flange details see separate coupling dimensions leaflet 3. Add S to the model number to identify actuators with symmetric yoke (i.e. 0.3S CL) 4. The air breather in the head flange has the same NPT size of the hydraulic connection

11 GIGS Spring Return Gas Powered Actuator Overall dimensions for spring to open actuators F Air breather A G Air breather D E top view C PN ØH M L B Q K Gas connection Y Mounting Bracket (optional) Only for models 14 and 18 Gas connection X Dimensions in mm Model A B C D E F G ØH K L M N P Q Gas connection NPT Weight X Y (Kg) OP / OP / OP / OP / OP / OP / OP / OP / OP / OP / OP / OP / OP / OP / OP / OP / OP / OP / OP / OP / OP / OP Ø / OP / OP / OP Ø / OP / OP / OP Ø / OP / OP Ø / Notes 1. Dimensions and weights given are with oil and without optional bracket or adaptor flange 2. For mounting flange details see separate coupling dimensions leaflet 3. Add S to the model number to identify actuators with symmetric yoke (i.e. 0.3S OP) 4. The air breather in the head flange has the same NPT size of the hydraulic connection 9

12 GIGS Materials and Sectional Tables Materials specification Item Name Material Equivalence to U.S. standards 1 Housing Carbon steel ASTM A537 cl.1 +ASTM A283 gr D 2 Yoke Carbon steel API 5LX gr X52 (C<0.2%) +ASTM A537 cl.1 3 Yoke bushing Bronze ASTM B427 Alloy UNS No. C Cover Carbon steel ASTM A283 gr D 5 Guide block pin Alloy steel AISI SAE Sliding block Bronze ASTM B427 Alloy UNS No C Guide block Carbon steel ASTM A537 cl.1 8 Guide bar Alloy steel (Chromium plated) AISl SAE Guide block bushing Steel +Bronze +Teflon 10 Travel stop screw Carbon steel AISI SAE Cylinder head flange Carbon steel ASTM A283 gr D 12 Piston rod bushing Steel +Bronze +Teflon 13 Piston rod O-ring Nitrile rubber 14 Piston rod seal ring Teflon 15 Piston rod Alloy steel (Chromium plated) AISI SAE Piston Carbon steel ASTM A283 gr D 17 Piston O-ring Nitrile rubber 18 Piston seal ring Teflon 19 Piston guide sliding ring Teflon +Graphite 20 Cylinder tube Carbon steel (Nickel plated) API 5LX gr X52 21 End flange Carbon steel ASTM A283 gr D 22 Sealing washer PVC 23 Travel stop screw Carbon steel AISI SAE Tie rod Alloy steel AISI SAE Spring container Carbon steel ASTM A283 gr D + ASTM A106 gr B 26 Spring Carbon steel ASTM A29 gr Container rod Alloy steel (Chromium plated) AISI SAE Container rod bushing Steel +Bronze +Teflon 29 Spring thrust flange Carbon steel ASTM A283 gr D 30 Guide rod Alloy steel (Chromium plated) AISI SAE Guide rod bushing Steel +Bronze +Teflon 10

13 GIGS Materials and Sectional Tables Scotch Yoke Mechanism B A A B Materials specification Item Name Material Equivalence to U.S. standards Q.ty 1 O-ring NBR 4 2 Yoke bushing Bronze ASTM B427 Alloy UNS No. C Retainer ring Stainless steel ASTM A479 Type Housing Carbon steel ASTM A537 cl1+astm A283 gr D 1 5 Guide bar Alloy steel AISI SAE 9840 (chromium plated) 1 6 Yoke Carbon steel API 5LX gr X52 (C<0.2%)+ASTM A537 cl Cover gasket Fibre 1 8 Guide block Carbon steel ASTM A537 cl Bushing Steel+Bronze+Teflon 1 10 Sliding block Bronze ASTM B427 Alloy UNS No. C Vent valve Stainless steel ASTM A479 Type Screw Carbon steel AISI SAE Cover Carbon steel ASTM A283 gr D 1 14 Guide block pin Alloy steel AISI SAE Washer Copper 1 16 Inspection plug Carbon steel AISI SAE Recommended spare parts 11

14 GIGS Materials and Sectional Tables Pneumatic cylinder for GIGS actuators A B 12 Materials specification Item Name Material Equivalence to U.S. standards Q.ty 1 Piston rod bushing Steel + Bronze + Teflon 1 2 Head flange Carbon steel ASTM A O-ring NBR 2 4 Piston rod seal ring Teflon + graphite 1 5 O-ring NBR 1 6 Piston rod Alloy steel (chromium plated) AISI SAE Piston Carbon steel ASTM A Guide sliding ring for piston Teflon + graphite 1 9 Piston seal ring Teflon + graphite 1 10 Tie rod Alloy steel AISI SAE Travel stop screw Carbon steel AISI SAE Cylinder tube Carbon steel (nickel plated) API 5LX gr X End flange Carbon steel ASTM A Nut Carbon steel ASTM A194 gr Spring washer Carbon steel AISI SAE Nut Carbon steel ASTM A194 gr Sealing washer PVC 1 18 Plug Carbon steel AISI SAE O-ring NBR 1 Recommended spare parts

15 GIGS Materials and Sectional Tables Spring cartridge for GIGS actuator Materials specification Item Name Material Equivalence to U.S. standards Q.ty 1 Nut Carbon steel ASTM A194 gr Washer Carbon steel AISI SAE Sealing washer PVC 1 4 Travel stop screw Carbon steel AISI SAE Spring container Carbon steel ASTM A283 gr D + ASTM A106 gr B 1 6 Spring Carbon steel ASTM A29 gr Nut Carbon steel ASTM A194 gr Shoulder washer Carbon steel AISI SAE Guide rod bushing Steel + Bronze + Teflon 1 10 Guide rod Alloy steel (chromium plated) AISI SAE Spring thrust flange Carbon steel ASTM A283 gr D 1 12 Container rod bushing Steel + Bronze + Teflon 1 13 Container rod Alloy steel (chromium plated) AISI SAE Recommended spare parts 13

16 GIGS Materials and Sectional Tables Gas filter - Condensate separator Materials specification Item Description Material Q.ty 1 O-ring NBR rubber 1 2 Filter container Aluminium 1 3 Filter body Aluminium 1 4 Drain plug Stainless steel 1 5 Filter Stainless steel 1 6 Screw Alloy steel 4 7 Retainer ring Stainless steel 1 8 Washer Alloy steel 4 Recommended spare parts 14

17 GIGS Materials and Sectional Tables Gas dehydrating filter/condensate separator Materials specification Item Description Material Q.ty 1 Condensate drain plug with handle Stainless steel 1 2 Lower enclosure Carbon steel 1 3 Screw Carbon steel 4 4 Washer Carbon steel 4 5 O-ring NBR rubber 1 6 Screw Stainless steel 1 7 Circlip Stainless steel 2 8 Nut Stainless steel 2 9 Valve body Aluminum 1 10 Gasket NBR rubber 1 11 Spacer Aluminum 1 12 Pierced Aluminum 1 13 Washer Stainless steel 1 14 Pierced filter Stainless steel or Aluminium 1 15 Molecular sieve kg 16 Filter Stainless steel 1 17 Body Aluminium 1 Dehydrating filter cartridge assembly --- Recommended spare parts 15

18 GIGS Materials and Sectional Tables 3/2 N.C. Solenoid valve with manual override Materials specification Item Description Material Q.ty 1 Body Aluminium 1 2 Plug Aluminium 1 3 Screw Carbon steel 3 4 Manual operation pin Stainless steel 1 5 Manual drive spring Stainless stee 1 6 O-ring NBR rubber 2 7 Plug for spring Aluminium 1 8 Spring washer Spring steel 2 9 Manual operation lever Aluminium 1 10 Screw Carbon steel 2 11 Manual thrust block Carbon steel 1 12 Spring pin Stainless steel 2 13 O-ring NBR rubber 1 14 Screw Carbon steel 4 15 Plug Stainless steel 1 16 Signal passage cover Aluminium 1 17 Piston Aluminium 1 18 O-ring NBR rubber 1 19 O-ring NBR rubber 1 20 Piston seal Teflon + Graphite 1 21 Piston seal Teflon + Graphite 1 22 O-ring NBR rubber 1 23 Taper plug Stainless steel+ Teflon 1 24 Plate plug Stainless steel 2 25 Inlet seal Teflon + Graphite 1 26 O-ring NBR rubber 3 27 Spring guide Stainless steel 1 28 O-ring protection Stainless steel 3 29 Spring Stainless steel 1 30 Seat lock ring nut Aluminium 1 31 Locking screw Stainless steel 1 32 Plug Stainless steel 2 34 Solenoid valve assembly see page 2/ Recommended spare parts

19 GIGS Materials and Sectional Tables 3/2 N.C. Solenoid valve with manual override Materials specification Item Description Material Q.ty 1 Inlet nozzle Stainless steel 1 2 Core ring nut Stainless steel 1 3 Cup plug Teflon 1 4 Core spring Stainless steel 1 5 Operating pin Stainless steel 1 6 O-ring NBR rubber 1 7 Core enclosure Stainless steel 1 8 Operating pin spring Stainless steel 1 9 Lower part of coil container Carbon steel 1 10 Pipe Stainless steel 1 11 Screw Stainless steel 1 12 Cable terminal Piston plug spring Stainless steel 1 14 Piston plug Carbon steel + Teflon 1 15 Spring pin Stainless steel 1 16 Coil container Aluminium 1 17 Gap washer Stainless steel 1 18 Core Stainless steel 1 19 Coil Exhaust nozzle Stainless steel 1 21 Cover Carbon steel 1 22 Washer Carbon steel 1 23 Data plate Stainless steel 1 24 Rivet Aluminium 2 Core assembly Recommended spare parts 17

20 GIGS Typical Control Schematics Gigs actuator with standard local-remote control (spring to close) P D 966 T.E. 623 Gas exhaust Electric connection to solenoid valve Auxiliary gas supply connection Materials specification Item Description D 3/2 Pneumatic power valve P 3/2 Pilot solenoid valve 1 Housing with scotch-yoke mechanism and spring module 5 Handwheel manual override 601 Isolation stop valve 608 Gas filter/condensate separator 623 Vent valve 704 Local-remote 3 way valve 801 Control system enclosure 966 Junction box Gas supply connection 18

21 GIGS Typical Control Schematics Gigs actuator with pneumatic ESD pilot (spring to open) P D PILOT GAS POWER GAS Materials specification Item Description D 3/2 Pneumatic power valve P 3/2 Pilot manual valve 1 Housing with scotch-yoke mechanism and spring module 5 Handwheel manual override 102 Isolation stop valve 278 Uni-directional flow control valve 608 Gas filter/condensate separator 610 Gas filter/dehydrator 621 Pressure gauge 623 Vent valve 684 3/2 Pneumatic valve with manual reset 703 Manual 3 way valve 746 Pressure switch 801 Control system enclosure 19

22 GIGS Typical Control Schematics Gigs actuator with local remote control (spring to close with hydraulic manual override) P 5 S C D 278B HP R T.E A Power gas Materials specification Item Description C Check valve D 3/2 Pneumatic power valve P 3/2 Solenoid valve R Hydraulic relief valve S Hydraulic dischange 2/2 valve 1 Housing with scotchyoke mechanism and spring module 3 Hydraulic cilinder 5 Hydraulic hand pump assembly 102 Isolation stop valve 278A Uni-directional flow control valve 278B Uni-directional flow control valve 438 3/2 Pneumatic valve with pneumatic pilot 610 Gas filter/dehydrator 621 Pressure gauge 623 Vent valve 705 Local-remote 3way control 801 Control system enclosure 966 Junction box 20

23 GIG/GIGS Sizing Criteria Valve data required Break to open torque Required torque to move the valve away from its closed position under the full differential pressure. This torque value must take into account the possible sticking effect which could affect the valve if it is closed for a long time. Reseating torque Required torque to close the valve under the full differential pressure. Break to close torque Required torque to move the valve away from its open position with maximum working pressure in the pipeline. This torque value can be high in the case of double block and bleed ball valves. End to open torque Required torque to fully open the valve. Running torque Required torque to actuate the valve in opening and in closing without differential pressure along the angular stroke except the fully open and fully closed positions where the required torques are those listed above. Dynamic torque Required torque to actuate the valve in opening under the medium flow through the valve. This torque value is high particularly on modulating service and when the medium speed and specific gravity are high. The angular position where the dynamic torque occurs has to be defined. Safety factor It is essential to confirm if the above torque values include a safety factor. Depending on the valve application additional safety factors may have to be considered over and above those recommended. Maximum allowable stem torque Maximum torque the valve stem can withstand. Valve stem dimensions Operating conditions data required Supply medium pressure range (minimum, normal, maximum) Type of actuator: double acting or spring return to close or spring return to open On-Off or Modulating service Frequency of operation and required operating times Actuator sizing general criteria A safety factor must be included during sizing if not included in the figures supplied by the valve manufacturer. The safety factor value has to be defined as a function of the valve type and size, of the working condition and of the operating time. The safety factor is usually included in the range from 1.2 to 1.5: higher values have to be employed in the case of extreme working conditions (for instance in case of low temperature, dirty and/or high viscosity medium, very infrequent operation, modulating service, short operating time). The output torques values listed in the performance tables of actuators do not include a safety factor but are the minimum guaranteed torques. 21

24 GIGS Sizing Criteria Sizing of GIGS single acting actuators GIGS single acting spring return actuators can be supplied as spring to close (GIGS-CL) or spring to open (GIGS-OP). Sizing of GIGS-CL spring to close actuators with canted scotch yoke mechanism The canted scotch yoke mechanism is Torque 0 Closed GIGS-CL (spring to close) canted yoke mechanism SPRING STROKE GAS STROKE 45 Angular Position 90 Open utilised as a standard as the output torque characteristics, of both oil and spring operation, are in general more suited to overcome the required valve torque throughout the 90 stroke. For actuator sizing the following comparisons between the valve data, including safety factors, and the actuator data have to be performed. Check that the spring ending torque of actuator exceeds the valve reseating torque with maximum differential pressure Check that the gas starting torque of actuator, with minimum supply pressure, exceeds the valve break to open torque with maximum differential pressure Check that the spring starting torque of actuator exceeds the valve break to close torque with maximum working pressure in the pipeline Check that the gas ending torque of actuator, with minimum supply pressure, exceeds the valve end to open torque Check that both the spring running torque and the gas running torque, with minimum supply pressure, of the actuator exceed the valve running torque Where a valve dynamic torque is present, check that it is overridden by the actuator oil running torque, with minimum supply pressure. For a more accurate sizing BIFFI should be consulted Check that the valve stem dimensions are within the accepted values of the actuator selected size, unless an adaptor is required for other dimensional reasons When required, since there is the possibility that the valve stops during its stroke due to abnormal conditions, it is necessary to check that the actuator spring output torque and the gas output torque, with maximum supply pressure, do not exceed the valve maximum allowable stem torque and the actuator maximum operating torque 22

25 GIGS Sizing Criteria Sizing of GIGS-CL spring to close actuators with symmetric scotch yoke mechanism Torque 0 Closed GIGS-CL (spring to close) symmetric yoke mechanism SPRING STROKE GAS STROKE 45 Angular Position 90 Open The symmetric scotch yoke mechanism is a special version that can be utilised when more suited to the required valve torque throughout the 90 stroke. E.g. when the valve break to close torque is higher than the reseating torque. The checks that have to be performed for actuator sizing are the same as for canted scotch yoke mechanism. Sizing of GIGS-OP spring to open actuators with canted scotch yoke mechanism Torque 0 Closed GIGS-OP (spring to open) canted yoke mechanism SPRING STROKE GAS STROKE 45 Angular Position 90 Open The canted scotch yoke mechanism is utilised as a standard as the output torque characteristics, of both oil and spring operation, are in general more suited to overcome the required valve torque throughout the 90 stroke. For actuator sizing the following comparisons between the valve data, including safety factors, and the actuator data have to be performed. Check that the gas ending torque of actuator, with minimum supply pressure, exceeds the valve reseating torque, with maximum differential pressure Check that the spring starting torque of actuator exceeds the valve break to open torque with maximum differential pressure Check that the gas starting torque of actuator, with minimum supply pressure, exceeds the valve break to close torque with maximum working pressure in the pipeline Check that the spring ending torque of actuator exceeds the valve end to open torque Check that both the spring running torque and the gas running torque, with minimum supply pressure, exceed the valve running torque Where a valve dynamic torque is present, check that it is overridden by the actuator spring running torque. For a more accurate sizing BIFFI should be consulted Check that the valve stem dimensions are within the accepted values of actuator selected size, unless an adaptor is required for other dimensional reason When required, since there is the possibility that the valve stops during its stroke due to abnormal conditions, it is necessary to check that the actuator spring output torque and the oil output torque, with maximum supply pressure, do not exceed the valve maximum allowable stem torque and the actuator maximum operating torque Sizing of GIGS-OP spring to open actuators with symmetric scotch yoke mechanism Torque 0 Closed GIGS-OP (spring to open) symmetric yoke mechanism SPRING STROKE GAS STROKE 45 Angular Position 90 Open The symmetric scotch yoke mechanism is a special version that can be utilised when more suited to the required valve torque throughout the 90 stroke. E.g. the valve break to close torque is higher than the reseating torque. The checks that have to be performed for actuator sizing are the same as for canted yoke mechanism. 23

26 øf øn øl D A D G M M GIG/GIGS Accessories Mounting Holes Mounting holes of housing front side Control panel or cabinet top view M H C J L ød R back side F G S Flow line Q N E A øp B Dimensions in mm Model A B C ød E F G H J L M N øp Q R S Mounting holes of cover and yoke side view top view Index (removable) B C Detail X: for models 0.3, 3, 14 Detail X: for models 0.9, 1.5, 6, 18, 32, 50 E M D R R X H J Yoke front side Cover E Cover P Housing Dimensions in mm Model A B C D E øf G H J øl M øn P R No. 4 x M No. 4 x M No. 4 x M No. 4 x M No. 4 x M No. 4 x M No. 4 x M No. 4 x M No. 4 x M No. 4 x M No. 4 x M No. 4 x M No. 4 x M No. 4 x M No. 4 x M No. 4 x M No. 4 x M No. 4 x M The index is shown for actuator in end position (fully open or closed) 24

27 GIGS Enquiry and Ordering Data Your enquiries for gas powered actuators can be efficiently processed when you supply the information requested on this page. Please use this page as guidance when sending your enquiries; if you need assistance, directly contact our offices. Applicable documents Customer requisition n... Data sheet... Specification... Valve data Manufacturer... Model...Type... Size: ND... mm inches Class... Max diff. pressure... bar g PSI Medium... Service on-off modulating... Valve required torques Nm Lbs-in safety factor: included...% not incl. break to open (0 )... break to close (90 )... end to close (0 )... end to open (90 )... running... dynamic torque (at... )... max allowable... Stem size diameter/square side...mm height...mm key dimension... x...mm Coupling dimensions customer's drawing... Installation pipe axis: vertical horizontal valve stem: vertical horizontal cylinder axis: parallel perpendicular to the pipe axis notes Actuator data Actuator type single acting spring to close single acting spring to open Notes Supply natural gas nitrogen connections size:... ISO7/1Rp NPT Gas supply pressure:... bar g PSI min... normal... max... Operating time (sec) opening: from... to... closing: from... to... Ambient temperature min... max... C F Environment conditions... Required painting cycle... Manual override: no jackscrew

28 GIGS Enquiry and Ordering Data Valve position signaling Electric limit switches open q.ty... closed q.ty... intermediate q.ty... Supply voltage load: resistive lamps... DC... AC... Hz... Amps... Amps inductive... Amps Cam actuated SPDT sealed sealed under inert gas gold contact DPDT... Proximity inductive magnetic NO NC SPDT type/manufacturer... Electric position transmitter 4-20 ma output signal contact type contactless type... resistive from... to... Ohm... type/manufacturer... notes Local position indicator standard special... Enclosure Protection degree weatherproof IP... explosionproof intrinsically safe... code: CENELEC... Material alum. (std) cast iron... Cable entries q.ty... size... Customer wiring diagram... Control system On-off service by electric signal by local manual control... 1 signal to close to open 2 signals to close to open Control signal: voltage... DC... AC... Hz notes Emergency action closing operation opening operation stay in position for hydraulic supply failure... for low pressure in the process line for high pressure in the process line for electric supply failure for electric control signal failure present from remote control station... 26

29 GIGS Spring Return Gas Powered Actuator GIGS 6 with manual override MHWR GIGS 0.9 with manual override MSJ 27

30 GIGS Spring Return Gas Powered Actuator GIGS 6 on test bench References Customer Project Series Q.ty C.R.T. CONTROLE UNITE DE DESULFURATION CERE-LA-RONDE (GDF) GIGS 2 C.R.T. CONTROLE STATION D'ETREZ GIGS 1 C.R.T. CONTROLE STOCKAGE SOUTERRAIN DE BEYNES GIGS 1 RING-O VALVE S.P.A. KARACHAGANAK UNIT 3 GIGS 1 C.R.T. CONTROLE CRUZY, SAINT MARTIN DE CRAU (GAZ DE FRANCE) GIGS 3 WORCESTER CONTROLS FRANCE GAZ DE FRANGE PALLEAU + CHERRE-DANZE GIGS 13 C.R.T. CONTROLE CUVILLY PROJECT GIGS 3 FRAMES ENERGY SYSTEMS B.V. VARIOUS PROJECTS IN LIBYA - VARIOUS APPUCATIONS GIGS 2 C.R.T. CONTROLE GDF CHERRE-DANZE / STATION TAISNIERE GIGS 5 RING-O VALVE IS.P.A. KARACHAGANAK UNIT 3 GIGS 10 TORMENE S.P.A. PECIKO OFFSHORE-EPSC 3 RE GIGS 1 FRAMES ENERGY SYSTEMS B.V. VARIOUS PROJECT IN THE NETHERLANDS (VARIOUS APPLICATIONS) GIGS 1 CAMERON FRANCE # SA. VARIOUS PROJECT FOR GAZ DE FRANCE GIGS 2 CAMERON FRANCE # SA. GREAT YARMOUTH GAS PIPELINE GIGS 3 C.R.T. CONTROLE STOCKAGE SOUTERRAIN DE BEYNES GIGS 1 C.R.T. CONTROLE VARIOUS PROJECTS FOR GAZ DE FRANCE GIGS 2 C.R.T. CONTROLE STOCKAGE DE CHEMERY GIGS 7 C.R.T. CONTROLE STOCKAGE DE CHEMERY GIGS 3 28

31 Notes 29

32 Biffi Italia S.r.L. - Località Caselle S. Pietro Fiorenzuola d Arda (PC) - ITALY Tel. (0523) Fax (0523) / / e_mail: biffi_italia@biffi.it