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fisherFisher 377Double acting holding valve
Fisher 377 pressure sensing holding valve is used for control applications where the gas source pressure drops below a specific point and requires special valves/actuators.
When the pressure of the gas source drops below the trigger point, the holding valve will prevent the actuator from rising, lock it in the previous position, or fail to descend. When the air source pressure rises above the trigger point, the 377 series holding valve will automatically reset, allowing the system to return to normal operation. The retaining valve can be installed on the manifold by top mounting, or by stem mounting or bracket mounting to meet the needs of various applications.
#Cost effective; Compared to systems that use three separate switching valves to perform failure functions, a single holding valve can reduce costs and decrease spare parts requirements. Single position valves can greatly simplify the requirements for pipelines.
#Convenient mode transformation; Transforming into any failure mode only requires a small change in connection.
#Adjustable security valve; The trigger point can be adjusted according to special gas source pressure requirements.
#Reliable operation; The design of the retaining valve includes a large number of thin film areas and fewer movable components,
Can improve effective performance, reduce maintenance requirements, and extend service life
Body Connections
1/4 NPT internal
Temperature Capabilities(
Nitrile Diaphragms and O-Rings: -40 to 82°C(-40 to 180°F)
Construction Materials
Housing: Aluminum or Stainless steel
Model No : 377D, 377U, 377CW and 377CCW trip valves
Fisher 377 pressure sensing holding valve is used for control applications where the gas source pressure drops below a specific point and requires special valves/actuators.
When the pressure of the gas source drops below the trigger point, the holding valve will prevent the actuator from rising, lock it in the previous position, or fail to descend. When the air source pressure rises above the trigger point, the 377 series holding valve will automatically reset, allowing the system to return to normal operation. The retaining valve can be installed on the manifold by top mounting, or by stem mounting or bracket mounting to meet the needs of various applications.
#Cost effective; Compared to systems that use three separate switching valves to perform failure functions, a single holding valve can reduce costs and decrease spare parts requirements. Single position valves can greatly simplify the requirements for pipelines.
#Convenient mode transformation; Transforming into any failure mode only requires a small change in connection.
#Adjustable security valve; The trigger point can be adjusted according to special gas source pressure requirements.
#Reliable operation; The design of the retaining valve includes a large number of thin film areas and fewer movable components,
Can improve effective performance, reduce maintenance requirements, and extend service life
Body Connections
1/4 NPT internal
Temperature Capabilities(
Nitrile Diaphragms and O-Rings: -40 to 82°C(-40 to 180°F)
Construction Materials
Housing: Aluminum or Stainless steel
Model No : 377D, 377U, 377CW and 377CCW trip valves
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