Description

The Model DDV deluge valve diaphragm-type deluge valve available in 1-1/2” (40mm), 2” (50mm), 2-1/2” (65mm), 76mm, 3” (80mm), 4” (100mm), 6” (150mm), 165mm, and 8” (200mm) nominal sizes with multiple end configurations (see Table A).

The valve’s diaphragm seals against a seat machined in the valve body. Water pressure in the chamber between the diaphragm and the cover presses the diaphragm against the seat to prevent water flow through the valve. The release of water pressure from the chamber allows the diaphragm to deform away from the seat, which permits water to flow through the valve. Maintenance of the valve is simplified because all trim is connected to the valve body, and the diaphragm can be removed without removing the trim.

All trim options include 0-300 psi water pressure gauges for the incoming water supply and control chamber; in addition, the dry pilot pressure regulating trim includes a 0-300 psi water pressure gauge for adjusting the outlet pressure. Optional 0-600 pressure gauges are available. Model DDV systems with groove end connections may be ordered with or without control valves (water supply valve and upper service valve). Control valves will be Reliable RBVG or REL363GT grooved end butterfly valves with integral tamper switches. Plugged outlets are provided for alarm devices that are ordered separately.