Clear Stem Protector
For actuator applications
See the actuator's rising stem while preventing damage to it.
The PneuMaster pneumatic diaphragm actuator is a diaphragm-type actuator that complements our field-proven pneumatic actuators offerings. The PneuMaster actuator delivers reliable, fail-safe performance when returning the gate valve to the closed position. This actuator also can be mounted on either the upper master or wing valve and can be operated by clean well gas or an air supplied well panel.
Designed and built to the industry’s highest standards, the PneuMaster pneumatic diaphragm actuator delivers simplicity, low weight, durability, and ease of maintenance. Because this actuator is lighter than standard piston-type actuators, it is ideal for tension-leg platforms (TLPs) and other weight-sensitive applications.
Service for 12-in piston
12-in Piston | Maximum Control Pressure |
Mounted on 2-in valve |
(0.0280 × valve pressure) + 5 psi [0.34 bar] |
Mounted on 2 1/2-in valve | (0.0280 × valve pressure) + 4 psi [0.27 bar] |
Service for 14-in piston
14-in Piston | Maximum Control Pressure |
Mounted on 1 13/16-in, 10,000-psi valve | (0.0146 × valve pressure) + 4 psi [0.27 bar] |
Mounted on 3-in valve | (0.0279 × valve pressure) + 3 psi [0.20 bar] |
Service for 18-in piston
18-in Piston | Maximum Control Pressure |
Mounted on 2-in valve | (0.0090 × valve pressure) + 6 psi [0.41 bar] |
Mounted on 2 1/2-in valve | (0.0100 × valve pressure) + 5 psi [0.34 bar] |
Mounted on 3-in valve | (0.010 × valve pressure) + 6 psi [0.41 bar] |
Mounted on 4-in valve | (0.0200 × valve pressure) + 6 psi [0.41 bar] |
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