Fisher 377 Pressure-Sensing Trip Valve
Manufacturer: Fisher — 377
Part number: 377
Category: Valves
Pressure-sensing trip valve for fail-up, lock-in-last-position, or fail-down actuator action when supply pressure falls below trip point.
Description
Fisher 377 trip valves help maintain normal process operation in applications where a specific valve or actuator action is required. When supply pressure falls below the trip point, the trip valve causes the actuator to fail up, lock in the last position, or fail down. When supply pressure rises above the trip point, the 377 trip valve automatically resets, allowing the system to return to normal operation. Single trip valve construction reduces costs and spare part requirements. A single trip valve greatly simplifies piping requirements. Conversion to any of the fail modes requires only minor hook-up changes. The trip point is adjustable for specific supply pressure requirements. Large diaphragm areas and few moving parts ensure efficient performance, minimum maintenance, and long service life.
Applications
- Actuator fail-safe action
- supply pressure monitoring
- emergency shutdown
- safety systems
- process protection
Industries
- Oil & Gas
- Chemical
- Refining
- Power Generation
- Pulp & Paper
Available on request — pricing is quoted per enquiry. Request a quotation.