MRA-1 Manual Reset Actuator
Trim component for DV-5A valves
| System and Actuation Type | For use with deluge or preaction systems |
| Listings and Approvals | Part of overall approval for applicable DV-5A valve |
Hydraulic Latch Actuator
In the event of a fire, a releasing device (solenoid valve, dry pilot actuator, or manual control station) trips the MRA-1 actuator by releasing pressure from the plunger/seal chamber. This causes the spring to lift the plunger seal from the closed-set position to the open-trip position.
Tripping the MRA-1 actuator releases water from the DV-5A diaphragm chamber through the MRA-1 actuator, which allows the DV-5A valve to open and water to flow into the piping system.
After the system is shut down, the actuator also provides an external reset feature to allow resetting of the DV-5A valve.
Features
- Hydraulic latch keeps the valve in the tripped position following actuation
- Bronze body
- Provides external reset function
- Pressure rating: 300 psi (20,7 bar)
Benefits
Industry-Leading Warranty
Johnson Controls stands behind its products with a unique warranty. See our Terms and Conditions for details.
Trusted Performance
Tyco® products have helped to protect spaces for more than 130 years.
Broad Portfolio
Tyco® products are part of a time-tested, broad portfolio of fire protection solutions, including fire grooved, sprinklers, valves, water mist, foam concentrates and hardware, and much more.
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