V&A PROCONTROL. Rotary Valve Actuators Pneumatic & Hydraulic On-Off / Control / ESD Double Acting Spring Return All Steel SIL 3

Transcription

1 V&A PROCONTROL Rotary Valve Actuators Pneumatic & Hydraulic OnOff / Control / ESD Double Acting Spring Return All Steel SIL 3

2 V R VP Series Technical Information V&A Procontrol VP series pneumatic steel scotch yoke actuators have been specifically engineered and designed to suit the most demanding applications, the classic scotch yoke mechanism has proved to be the most reliable means of high torque transmission, transforming the linear movement of the piston into a 90 rotation which suits all high torque quarter turn valve operational requirments. During the design stage of the V&A Procontrol scotch yoke actuator range, our engineers have taken into consideration 35 years of field experience. The result is the new V&A Procontrol scotch yoke series. Key Design Features Modular construction allowing for complete interchangeability. Weatherproof fabricated carbon steel housing ensures light weight and high strength. ISO 5211 Flange connection. Stainless Steel position indicator complete with VDI/VDE 3845 NAMUR drive slot for monitoring devices. Standard heavy duty modulating service canted and symmetric steel scotch yoke mechanism to suit most valve torque requirements. High strength heavy duty alloy steel chromium plated transversal thrust reaction bar. Standard pneumatic cylinder, polished with electro less nickel plated internal coating ensures maximum protection against corrosion, and longer sealing life suitable for supply pressure of up to 12 bar design. High pressure gas pneumatic cylinder, in standard carbon steel for inert gas application, or special application carbon steel for sour gas supply medium, polished with electroless nickel plated internal coating protection against corrosion, suitable for supply pressure of up to 160 bar design. Carbon steel piston supported by high strength alloy steel chromium plated piston rod ensure corrosion resistant durability. Fully encapsulated factory welded epoxy coated spring cartridge ensure personnel safety and simplified assembly. Alloy steel galvanized end stoppers to allow for corrosion resistant fine valve position adjustment + 5 Emergency manual overrides available are std jack screw and declutchable hand wheels or hydraulic hand pump. Special cylinder and sealing materials available for special applications. Standard operating temperature range: 29 C / + 90 C. High temperature options available. Actuator torque output up to 400,000Nm. Low temperature arctic environment application available 46 C. Construction V&A Procontrol actuator housings have been engineered considering latest industry standards as our starting point for improvment, the result is a more rugged, robust and strengthened product suitable for the most demanding applications such as modulating and offshore heavy duty services. Our acutators generate high torque outputs at a more cost effective price to our clients. V&A Procontrol acuators are made completely from fabricated carbon steel. Applications On/off Emergency Shut Down (ESD) Blow Down Modulating Heavy Duty Modulating Fast Acting Certifications ISO 9001:2000 ATEX PED SIL FSMS

3 Modular Design V&A Procontrol scotch yoke actuators all share a common construction philosophy known as modularity, which is achieved by utilizing a consistent engineering design throughout our complete range. Our current range of scotch yoke actuators consists of various center body sizes. The center bodies have been designed to accommodate the widest variety of pneumatic and hydraulic power cylinders together with the widest variety of spring cartridges. The power cylinders can be assembled to either or both sides of the center body. The spring cartridges can be assembled onto either side of the center body thus allowing for fail open or fail close emergency operation. The manual overrides can be assembled onto eitherside of the centre body. Our modular contruction and stocking availability enables us to meet short deliveries. Scotch Yoke Mechanism and Torque Curves Actuator torque Canted Scotch Yoke Valve torque Ritning Canted Yoke The canted scotch yoke is ideal when the valve torque requirments are highest at the beginning (valve unseating) and the end position (valve reseating) of the valve 90 rotation. The canted scotch yoke mechanism covers most all and butterfly valve torque requirments Actuator torque Symmetric Scotch Yoke Valve torque Ritning Symmetric Yoke The symmetric scotch yoke is ideal when the valve torque requirements are highest during the intermediate positons of the valves rotation (running). The symmetric scotch yoke is the most suitable yoke design for modulating service. The symetric scotch yoke mechanism is normally used for plug metal seated ball valves and control valves. 0 90

4 VPS Sectional Drawing and Parts List Standard pneumatic spring return actuator illustrated. 11 ITEM DESCRIPTION MATERIAL 1 Housing 2 Yoke 3 Yoke Bushing Bronze 4 Transversal thrust bar Alloy Steel (chromium plated) 5 Sliding Bar Bronze 6 Guide Block 7 Cylinder head flange 8 Cylinder Tube (electro less nickel plated) 9 Piston Rod Alloy Steel (chromium plated) 10 Piston 11 End Flange 12 Tie Rod Alloy Steel 13 Oring NBR 14 Piston guide ring PTFE charged Graphite 15 Oring NBR 16 Rod Bushing Steel + Bronze + PTFE 17 Stop Setting Screw Alloy Steel 18 Spring Cartridge 19 Spring Alloy Spring Steel 20 Stop Setting Screw Alloy Steel 21 Spring shaft Alloy Steel (chromium plated) Torque Up to 400,000 Nm Operating Pressures Pneumatic: up to 12 bar Hydraulic: up to 150 bar HPG Range for high pressure Gas also available Standard Paint Specification Surface preparation: Sand Blasting to grade SA 2 1/2 Primer coat: Epoxy 60 microns DFT Intermediate coat: Epoxy 100 microns DFT Final coat: Polyurethane 40 microns DFT Final colour: White 200 microns total DFT *Technical Information Subject to Change without Notice

5 VPS Spring Return Model Number Matrix V = SCOTCH YOKE P = PNEUMA TIC S = SPRING RETURN V P S S YOKE TYPE S=SYMMETRIC C= CANTED VPD Double Acting Model Number Matrix V = SCOTCH YOKE V C Actuator Pneumatic Supply Details 04 CENTER BODY SIZE CYLINDER SIZE FAIL MODE C= Fail Close O= Fail Open SPRING SIZE S P D S D D H W ACTUATOR BASE MODEL P = PNEUMA TIC P D = DOUBLE ACTING D PNEUMATIC SUPPLY RANGE YOKE TYPE S=SYMMETRIC C= CANTED S C MINIMUM OPERATING MAXIMUM OPERATING RANGE CENTER BODY SIZE MAXIMUM ALLOWABLE WORKING A B C D E F G H MANUAL OVERRIDE HW= Jack screw with engaged hand wheel HS = Jack screw with disengaged hand wheel HG = Enclosed jack screw with spur gear DH = Declutchable hand wheel HP= Hydraulic hand pump CYLINDER DOUBLE OVERRIDE SIZE ACTING VPS04 3 to 12 Barg 2.7 BARG 12.0 BARG UPTO 12.0 BARG 1,000 VPS06 3 to 12 Barg 2.6 BARG 12.0 BARG UPTO 12.0 BARG 2,500 VPS07 3 to 12 Barg 1.0 BARG 10.5 BARG UPTO 12.0 BARG 5,000 VPS09 3 to 12 Barg 0.9 BARG 12.0 BARG UPTO 12.0 BARG 9,000 VPS10 3 to 12 Barg 1.5 BARG 10.5 BARG UPTO 12.0 BARG 18,000 VPS13 3 to 12 Barg 1.6 BARG 10.5 BARG UPTO 12.0 BARG 30,000 VPS16 3 to 12 Barg 1.2 BARG 10.5 BARG UPTO 12.0 BARG 50,000 VPS20 3 to 12 Barg 3.0 BARG 12.0 BARG UPTO 12.0 BARG 150,000 VPS27 3 to 12 Barg 3.0 BARG 10.5 BARG UPTO 12.0 BARG 250,000 VPS35 3 to 12 Barg 4.5 BARG 10.5 BARG UPTO 12.0 BARG 400,000 DD ACTUATORS MAXIMUM TORQUE OUTPUT RATING NM THE MAXIMUM ALLOWABLE WORKING DOES NOT APPLY TO ALL ACTUATOR SIZES AND DEPENDS STRICTLY ON THE VARIOUS CYLINDER SIZES AVAILABLE FOR EACH MODEL. DH = Declutchable hand wheel HP= Hydraulic hand pump

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