OS Y Gate Valve

OS Y Gate Valve



  • UL 262 Listed and FM 1120/1130 Approved and certified to ANSI/NSF 61 & 372
  • Epoxy Coated interior and exterior surfaces
  • Outside Screw & Yoke (O.S.&Y.)
  • Adjustable packing
  • Rubber encapsulated iron wedge
  • Handwheel – open left or open right
  • 250psig (1725 kPa/17 barg) maximum working pressure - 500psig (3450 kPa/35 barg) static test
  • Epoxy coating meets or exceeds all applicable requirements ANSI/AWWA C550
  • Flanged end drilling complies with ASME/ANSI B16.1 Class 125


  • Stainless steel fasteners: Type 304 or 316
  • ASTM B98-C66100/H02 stem
  • EPDM disc and O-rings
  • PN10/PN16 drilling

OS & Y gate valve commonly used to control water flow to fire sprinkler systems
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. Raising the gate allows water to flow through the valve while lowering the gate cuts off the water flowing through the valve. When fully open, the typical gate valve has no obstruction in the flow path, resulting in very low friction loss. UL & FM certified.

Monday-Friday: 9:00AM to 6:30PM
Saturday: 9:00AM to 2:30PM
Karachi Fire Corporation © 2022 Developed by Experts Digital Marketer