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Pneumatic positioner for propotional acting :
The device positioner is particularly suitable to govern rotary actuators; used on butterfly or ball valves.
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Product Details
Torque up to 5110 Nm
+-10 Deg End stroke adjustment
Double Rack and Pinion Design
Hard Anodized Power coated AL body
FEATURES
-Pinion supported on polyacetal Bearings
-Maximum Working Pressure 10 bar
-Lubrication is not necessary
-Temperature Range: -40 oC to +100 oC
-Life > 1 million Cycles
-Anti blow-out pinion
-Double acting can be converted to single acting just by adding springs
-Unique spring Retainer construction
-Ease of handling and enhanced safety while dismantling (especially in single acting)
-No lubrication required for springs
-Pre-compression leads to longer spring life
-Modular spring construction permits combination of springs (26 combinations) to generate optimum torque
-Spring can be assembled or dismantled easily because of extra long bolts on covers.
END STROKE
-Setting scews provided on the body
-±10o setting possible for closing and opening
-Strong Machined Cam for locking
'V' SEAL
-Low on co-efficient of friction
-Longer life, no lubrication needed
-Excellent response to control valve positioning due to low friction
ISO PAD
-Valve mounting as per ISO 5211 with an additional one higher size pad
-Standardisation of mounting accessories
-ISO centering Ring for precise location
-Octagonal drive shaft for ease of mounting
SPRING
-GR III epoxy coated Spring having high corrosion resistance
-Modular Springs set catering to various valve torque characteristics
-Life Time Lubricated
-Non Buckling Modular Spring design
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69-032/090-F
GENERAL CHARACTERISTICS
type of construction: with tie-rods
operation: double-acting
materials: AL tube and endcovers - NBR seals - other cementated steel
type of mounting: by means of holes in the body
type of mounting: any
Operating temperature: 0° + 50° C (with dry air -20°C)
standard rotation: 90° - 180° (others on request)
PNEUMATIC DATA
operating pressure: 0,5 -M0 bar
Fluid: filtered air, without lubrication
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TORK-MATE - Pneumatic Actuators - 890 Series
The Tork-Mate 890 series extended life actuators are ideal for the operation of 90° turn devices such as butterfly valves, ball valves, plug valves, damper valves and other devices. Tork-Mate pneumatic actuators have features that are unique, providing many benefits to the user looking for worry-free service.
The Tork-Mate 890 series actuators feature pinion travel stops that allow a full /-10° of valve travel adjustment. As an option, extended stroke adjustment screws can be added for inexpensive throttling applications.
Special piston seals provide greatly extended life compared to standard O-ring actuators. All other bearings, seals and components have been engineered to provide superior and extended service lives.
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