Fisher 377 Trip Valve
Fisher 377 Trip Valve
Fisher 377 trip valves monitor supply pressure and automatically trigger a preset actuator action-fail up, down, or lock in place-when pressure drops too low, then reset on their own once pressure returns to normal.


Core product advantages
Fisher 377 Trip Valve
A single valve replaces the three separate switching valves typically needed for failure functions-cutting costs and simplifying spare parts inventory.
Switching between fail modes? Just a few tubing changes and you're done.
The trip point adjusts to match your specific supply pressure requirements.
Built with large diaphragm areas and minimal moving parts, it delivers reliable response, stays low-maintenance, and keeps running for years.
Detailed parameter list
|
Parameter |
Description |
|
Product Type |
Pneumatic Trip Valve |
|
Fail Actions |
Fail Up / Fail Down / Lock-In-Last-Position |
|
Reset Type |
Automatic (when supply pressure rises above trip point) |
|
Trip Mechanism |
Pressure-dependent mechanical trip |
|
Supply Pressure Range |
Suitable for standard pneumatic control systems |
|
Trip Point |
Field-adjustable |
|
Mounting |
Compatible with Fisher actuator assemblies |
|
Typical Media |
Clean, dry instrument air or compatible gases |
|
Applications |
Safety shutdown, pressure loss protection, actuator emergency action |

Main Applications

Why Choose Us?
•Strong technical team with troubleshooting capabilities.
•All supplied equipment comes with a one-year warranty.
•Reliable service for factories, EPC contractors, and distributors.
•Cost-effective solutions for domestic and international clients.

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