The valve is closed in its normal, set position and opens when an activation ball valve is turned to the open position or when a solenoid valve is energized. It gradually closes drip tight when the ball valve is turned back to the closed position or the solenoid valve is de-energized, reducing the risk of water hammer damage.
Size Unit
Size range
Fire Protection certifications
Lloyd's Type Approval
Model 44 (Threaded): DN25-80 / 1”-3”
Model 68 (Flanged): DN50-250 /2″-10″
Model 77 (Flanged): DN50-600 / 2”-24”
Pressure rating
Working temperature
End connection type
Flanged
ISO-PN16 & ISO-PN25
ASME/ANSI B16.42 & B16.5 Class 150# & Class 300#
Grooved
ASME/ANSI AWWA 606
Sizes: 2″-8″
Threaded
Sizes: 1″-3″
Materials of construction
Body and Cover
Ductile Iron ASTM A536
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 44, 68 ,77 MO\EL
