Aira 4matic Global Valve Automation Private Limited

• 4Matic Deluge Valve is a diaphragm style valve that depends upon water pressure in the Diaphragm Chamber to hold the Diaphragm closed against the water supply pressure. When the Valve is set for service, the Diaphragm Chamber is pressurized through the trim connections from the inlet side of the system’s main control valve, for example an O.S. &Y. gate valve or butterfly valve. Opening of a wet pilot sprinkler releases water from the Diaphragm Chamber faster than it can be replenished through the 1/8 inch (3,2 mm) restriction provided by the Automatic Shut-Off Valve in the diaphragm supply connections  also described This results in a rapid pressure drop in the Diaphragm Chamber and the force differential applied through the Diaphragm that holds it in the set position is reduced below the valve trip point. The water supply pressure then forces the Diaphragm open permitting water to flow into the system piping, as well as through the Alarm Port to Actuate the system alarms.
• U.L. Listed - Guide No. VLFT & VLJH C-UL Listed FM Approved - Deluge Sprinkler Systems, Precaution Sprinkler Systems, Refrigerated Area Sprinkler Systems American Bureau of Shipping (ABS) - Certificate No. 05-HS502910C-PDA NYC Department of Buildings - MEA 89-92-E Vol XXXI CE - Pressure Equipment Directive 97/23/EC.

TECHNICAL DATA Specifications:

• Maximum Working Water Pressure: 250 PSI (17.4 bar)
•  Style: Straight through
• Connections: See Table 1.Factory tested: to 500 psi (34.5 bar)
•  Valve differential: 2:1 (priming chamber to inlet chamber)
• Priming chamber supply restriction (required): 0.0625” (1.6 mm)
• Color of Valve: Red