Electrically or hydraulically, pilot controlled deluge/pre-action valve, actuated by the pipeline pressure. The valve is closed in its normal, set position and opens when the hydraulic pressure drops in a water pressurized pilot line, releasing a hydraulic relay, or by an electric command. When tripped, the valve regulates to a steady, preset downstream pressure, regardless of upstream pressure or flow rate fluctuations. The valve must be manually reset following automatic actuation. An emergency manual release valve is fitted as standard.
Size Unit
Size range
Fire Protection certifications
UL Listed
DN50-250 / 2”-10”
Pressure rating
Working temperature
End connection type
Flanged
ISO-PN16 & ISO-PN25
ASME/ANSI B16.42 & B16.5 Class 150# & 300#
Grooved
ASME/ANSI AWWA 606
Sizes: 2″-8″
Materials of construction
Body and Cover
Ductile Iron ASTM A536 (standard)
Stainless Steel ASTM CF8M
Cast Steel ASTM A216 & A352 LCB
NAB ASTM B148 C-958000
Internal Parts
Stainless Steel
Diaphragm
Neoprene (standard)
NR
NBR
EPDM
Control Trim & Accessories
Brass / Bronze / Copper (standard)
Stainless Steel
Super Duplex
Monel
NAB
* Other optional materials available upon request
OCV 68 DE\EL\HRV\PR-MR
