Spirax Sarco PN9330E Pneumatic Actuator Valve

Spirax Sarco PN9330E Pneumatic Actuator is a PN9000-series diaphragm actuator designed to drive Spirax Sarco Spira-trol control valves. The actuator accepts a control air signal of 6–18 psi (0.4-1.2 bar) to position the valve stem, enabling both on/off and modulating control strategies in steam and industrial processes. The unit features a fully rolling diaphragm configuration, which is designed for reliable, drift-resistant operation under varying process loads, and includes a mechanical travel indicator to confirm the actual stroke setpoint during commissioning and maintenance. As part of Spirax Sarco's control-valve ecosystem, the PN9330E is intended for mounting on Spirax Sarco valve bodies and is specified for pairing with Spira-trol assemblies, along with accompanying positioners where required by the control loop. The PN9000 family is engineered for robust performance in demanding environments, with attention to ease serviceability and repeatable actuation across standard installation sizes. The PN9330E's 6–18 psi input range aligns with common instrument-air supply practices in plants, supporting dependable valve actuation in steam, hot water, and other process applications where precise control of flow is critical.