Valve Actuators – Pneumatic Actuators
Pneumatic Cylinders for Valve Actuation
3¼” – 36″ Bore
150 PSI (1000KPA) Rated
The PA Series of linear valve actuators are designed to automate process valves. Heavy-duty design, choice materials, and seal configuration provide trouble free performance. RDC’s PA Series can be adapted to any process valve requiring a linear movement and can be accessorized in-house with solenoid valves, position feedback, lock-outs, manual overrides, and fail safe systems. AWWA C-541 and Full Stainless Steel option also available.
|2 pressure sensitive U cups for better sealing and durability.|
Head and Cap
|Numerically controlled machined from hot rolled steel plates ASTM A36 or better.|
|Bore size from 3 1/4” to 36”:|
Composite barrel, specifically designed for cylinder tubing for weight reduction and corrosion resistance. Steel barrel or Stainless Steel available as option.
Tie Rods and Nuts
|Bore size from 3 1/4″ to 36”:|
Made from high strength stressproof steel with zinc plated steel nuts Grade 5 or better. Stainless steel tie rods are also available on request along with stainless steel nuts.
|Cartridge type, made from Bronze SAE 660. Seals can be replaced without dismantling the cylinder.|
|High carbon content steel SAE
1045, ground, polished and chrome
plated. (316 stainless steel or 17-4
PH available on request).
|Bore size from 3 1/4″ to 8”:|
Numerically controlled machined from high strength aluminum bar stock (6061-T6).
Bore size from 10” to 36″:
Made from mild steel. A wear strip is added on the outside diameter to protect the tube from side load and assure a perfect fit.
Seals and Packing
|“U” CUP AND “O” RING used for added
security. A high durometer nitrile material
is offered as a standard with a temperature
rating of -34°C to
120°C (-30°F to 250°F). For temperature
range up to 250°C (450°F), fluorocarbon (viton) seals and
packings are available. For lower
temperatures to -50°C, low temperature
nitrile and urethane seals are available.
|Prevents dust and other particles from
entering into the cylinder. Standard
material is polyurethane for standard
and low temperature applications. It
can be replaced by fluorocarbon (viton)
for higher temperature applications.
Piston Wear Strip
|Bore size from 10” to 36”: |
A Teflon band filled with particles of bronze and glass, for smoother piston operation.