Control systems Control valves
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TI-P373-13 CMGT Issue 16
PF6 Stainless Steel Piston Actuated On/Off Valves
Description A 2-port pneumatically actuated on/off stainless steel valve for use on steam, water, air, oil and gases. A pneumatic signal acts on the actuator piston to open or close the valve with a spring return action. A valve position indicator is included on standard and flow regulator models. Standard versions have PTFE stem seals for operation up to 180 °C (356 °F). Optionally , high temperature stem seals ( H ) can be provided for operation up to 200 °C (392 °F). Valves are available with one of three sizes of actuator: Type 1 (45 mm (1.77")), Type 2 (63 mm (2.48")) and Type 3 (90 mm (3.54")) with the following action options: - NC (Normally Closed) - Designed for flow over the seat (port 1 to 2). Caution: Not recommended for waterhammer prevention. - NO (Normally Open) - Designed for flow under the seat (port 2 to 1). Can be used to prevent waterhammer on valve closure in liquid applications. - BD (Bi-Directional normally closed) - Designed for special applications that require flow in both directions and incorporates an anti-waterhammer design for liquid applications flowing under the seat (port 2 to 1). Note: To help prevent the possibility of waterhammer on liquid applications flowing over the seat (port 1 to 2) the pressure should not exceed 1 bar g (15 psi g).
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Optional extras (see 'Valve selection guide') : Travel switch Flow regulator
Position module
TI-P373-13 CMGT Issue 16
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PF6 Stainless Steel Piston Actuated On/Off Valves
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