Originally designed to handle the severe service applications seen on offshore platforms, the Master Flo PDA double-acting pneumatic piston actuator has a proven performance track record. The actuator is environmentally sealed to reduce many of the corrosion effects common to the industry, and features a design with no exposed linkages.
The double-acting piston operates on a minimum of 80 psi pneumatic supply providing a rigid control system for higher pressure choke valves. The internal spring provides fail-closed operation features upon loss of pneumatic or electrical signal, and PDAs are available with single, double and triple-spring configurations.
Carbon or low alloy steel
PDA 100: 91
PDA 200: 185
PDA 300: 300
3-15 psig, 6-30 psig, 4-20 mA, HART, fieldbus
4-20 mA, HART, fieldbus
CSA/FM/UL explosion proof or ATEX intrinsically safe or flameproof
Spring-assist fail close is standard. Fail lock is also available.
Open yoke; manual override (hand pump); right-angle mount.
* = required fields