Fail safe gate valves and actuators therefor
Fail-close hydraulically actuated control choke
Fail-safe actuator and hydraulic system incorporating the same
Fail-safe actuator and hydraulic system incorporating the same
Fail-safe actuator device
Fast closing well choke
Fast-closing stepping actuator for a valve member
Faucet for frozen carbonated beverage machine
Flow control valve
Foot-controlled water faucet