Features
- Designed to trip when system air pressure drops at a rate exceeding approximately 1 psi/minute (0.07 bar/min)
- Upon tripping, it transmits system air pressure to the intermediate chamber of the dry pipe valve, which neutralizes the differential pressure holding the valve closed and opens the waterway clapper
- UL and C-UL Listed, FM and LPCB Approved
- Maximum water supply pressure: 250 psi (17.2 bar)
- Maximum system air (or nitrogen) pressure of 70 psi (4.8 bar)