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ProControl LPS & LPD series actuators are specifically engineered in order to meet each individual requirement to operate rising stem valves such as gate valves, globe valves and rising stem non-contact ball valves. ProControl take advantage of the same power cylinder mechanisms of the quarter turn range, with the only difference being the final length which depends on the valves stroke. In order to maintain an efficient production program many parts such as cylinder flanges and pistons are stock items, although each linear actuator is custom built to suit each valve.
KEY FEATURES
Fabricated
entirely from carbon steel.
Low
pressure pneumatic cylinder for supply pressures up to 12 bar
design suitable for instrument air or sweet / inert gas applications or
special application with material according to NACE requirements for sour gas
supply medium.
Carbon
steel piston with dynamic floating O-ring seals coupled with lubricating
piston guide rings.
Carbon
steel spring cartridge (only for single acting) with safety facility which
allows safe installation and removal of the whole cartridge assembly.
Visual
position indicator directly connected to the valve stem showing actuator /
valve full linear stroke.
17.4
PH stainless steel piston rod, which prevents corrosion and allows for minimum
sliding friction on dynamic seals.
ASTM
A 320 L7 alloy steel tie rods, with standard electrolytic zinc coating
according to ASTM B633 FeZn 12 (thickness 12 μm).
Carbon
steel mounting adapter with bottom flange machined according to the valve
top mounting with carbon steel nickel-plated special coupling mechanism.
Optional for wedge gate valves: coupling with hammer blow effect to
facilitate valve unseating.
Alloy
steel galvanized end stoppers available on request.
Integral
manual override facilities.
TECHNICAL SPECIFICATIONS
Supply
pressure up to 12 bar design.
Actuator
thrust output up to 3.000.000 N.
Spring
thrust up to 400.000 N.
Standard
operating temperature range -30°C / +100°C.
Special
low temperature application up to -60°C.
Special
high temperature application up to +200°C.
All
ProControl pressure containing parts are designed according to ASME VIII
div.1 and EN 13445.
All
ProControl actuators are designed for 30 years’ service life.
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