The valve is closed in its normal, set position and opens when the activation ball valve is turned to the open position or when a remote activation ball valve is turned to the open position. It gradually closes drip tight when the selector valve is turned back to the closed position, 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\RC
