Wet Alarm & Check Valves Model H

The AG Sprinkler Model H-1, H-2 and H-3 Fully Assembled Alarm Check Valves are used in wet pipe fire sprinkler systems. They primarily serve a dual purpose in that they prevent a reverse flow of water through their bodies (non-return) and also provide for the use of a hydraulic fire alarm which is not dependent upon an electrical power supply for its operation. Through the use of a hydraulic retard chamber a time delay is provided to eliminate potential false alarms caused by fluctuating water supply pressures. Where constant pressure water supplies are used the retard chamber (time delay) is not necessary.
Models:
– H-1 – Flange / Flange
– H-2 – Groove / Groove
– H-3 – Flange / Groove
Sizes:
– 3″ (80mm)
– 4″ (100mm)
– 6″ (150mm)
– 8″ (200mm)
Working Pressure: 175 psi (12 bar)