OS & Y Gate Valve

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Sold By: JerseyMEP

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One type of valve commonly used to control water flow to fire sprinkler systems is known as an OS&Y gate valve. OS&Y means “outside stem and yoke” or “outside screw and yoke”. OS&Y gate valves operate by opening and closing via a gate, which lowers into or rises out of the valve.


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  • OS & Y valves contain a screw nut held by a yolk, or beam, on the exterior of the valve.
  • Control water flow to fire sprinkler systems.



Pressure 300 PSI
Temperature Range -10 to 82 deg C
Body Material Ductile Iron
Length 190.5 mm
Height Normally Open 415 mm
Height Normally Close 350 mm
Size 50 mm
Weight 20 kg



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