Control final
Fisher™ 645 Actuator
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Fisher™ 645 Actuator
Fisher 644 and 645 actuators are used to automatically control steam-driven boiler feedwater pumps (reciprocating or turbine). The 644 or 645 actuator, when used in combination with one of several push-down-to-close sliding-stem valves, forms a pump governor. 644 and 645 actuators may also be combined with push-down-to-open valves to be used as relief governors.
Características clave
- Steel and cast iron construction provides long service life.
- Few moving parts and easy access reduce maintenance and downtime.
- Spring adjustment is readily accessible without removing any parts.
- Direct-operated configuration provides fast speed of response.
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