Xiangjing (Shanghai) M&E Technology Co., Ltd
| Packaging Details | Cardboard box |
| Position Control | On/Off |
| Payment Terms | T/T |
| Input Signal | Pneumatic |
| Delivery Time | 6-8 weeks |
| Max Outlet Pressure | 150 psig |
| Supply Ability | 1000 sets per year |
| Diagnostics | No |
| Mounting Type | Actuator Mount |
| Brand Name | F-isher |
| Model Number | 377 |
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Product Specification
| Packaging Details | Cardboard box | Position Control | On/Off |
| Payment Terms | T/T | Input Signal | Pneumatic |
| Delivery Time | 6-8 weeks | Max Outlet Pressure | 150 psig |
| Supply Ability | 1000 sets per year | Diagnostics | No |
| Mounting Type | Actuator Mount | Brand Name | F-isher |
| Model Number | 377 | ||
| High Light | Fisher 377 pneumatic pressure valve ，Fisher 377 safety trip valve ，Fisher 377 control valve device | ||
The Fi-sher 377 is a pressure-sensing trip valve used in control applications where a specific actuator action is required when supply pressure falls below a set point. It automatically causes the actuator to fail up, lock in the last position, or fail down, and resets when supply pressure recovers.
This single-unit trip valve simplifies systems that would otherwise need multiple switching valves. It features an adjustable trip point, large diaphragm areas, and few moving parts for reliable performance and long service life. Configurations include fail-down (377D), lock-in-last-position (377L), fail-up (377U), and directional fail modes. It can be manifold-, yoke-, or bracket-mounted and is compatible with various Fi-sher piston actuators.
| Specification | Details |
|---|---|
| Product | Fi-sher 377 Trip Valve |
| Function | Pressure-sensing trip valve for actuator fail action |
| Available Modes | Fail-down (377D), Lock-in-last (377L), Fail-up (377U), Clockwise/Counterclockwise fail options |
| Allowable Supply Pressure | Maximum 10.3 bar (150 psig); Minimum 3.8 bar (55 psig) |
| Trip Point | Adjustable from 2.8 bar (40 psig) to 72% of supply pressure |
| Reset | Automatically resets 12.5% to 33% above trip point |
| Body Connections | 1/4 NPT internal |
| Temperature Capabilities | Nitrile: -40 to 82°C (-40 to 180°F); Fluorocarbon options available |
| Construction Materials | Aluminum or stainless steel housing |
| Hazardous Area | ATEX Group II Category 2; SIL 3 capable |
| Approximate Weight | Aluminum: 0.95 kg; Stainless steel: 2.31 kg |
Used in process control systems with pneumatic piston actuators where defined fail-safe action is required upon loss of air supply, including oil and gas, chemical, power, and general industrial applications.
Users may face issues with improper trip point setting, volume tank sizing for fail modes, or piping complexity in multi-valve setups. The 377 design reduces piping needs and allows easy mode conversion with minor hookup changes.
Serves as a direct or functional replacement for earlier Fi-sher trip valves or multi-valve trip systems requiring simplified fail-safe control.
We supply genuine Fi-sher / Em-erson products with experience in control valve accessories and reliable support for process applications.
Typical production and delivery time is 6-8 weeks.
Please provide actuator type, required fail mode, supply pressure, and mounting preference for a customized quotation.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2015
Total Annual:
30,000,000-50,000,000
Employee Number:
200~300
Ecer Certification：
Verified Supplier
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