OS&Y Gate Valves

An OS&Y (outside stem & yoke) gate valve is commonly used in the fire protection industry to control water flow in sprinkler systems. Our OS&Y gate valves are UL Listed and FM Approved.

Specifications: 
  • UL Listed
  • FM Approved
  • 300 PSI rated
  • groove x groove
  • flange x flange
  • flange x groove
Part Number Size Notes
OSY25GG 2½" groove x 2½" groove groove x groove
OSY3GG 3" groove x 3" groove groove x groove
OSY4GG 4" groove x 4" groove groove x groove
OSY6GG 6" groove x 6" groove groove x groove
OSY8GG 8" groove x 8" groove groove x groove
OSY10GG 10" groove x 10" groove groove x groove
OSY12GG 12" groove x 12" groove groove x groove
OSY25FF 2½" flange x 2½" flange flange x flange
OSY3FF 3" flange x 3" flange flange x flange
OSY4FF 4" flange x 4" flange flange x flange
OSY6FF 6" flange x 6" flange flange x flange
OSY8FF 8" flange x 8" flange flange x flange
OSY10FF 10" flange x 10" flange flange x flange
OSY12FF 12" flange x 12" flange flange x flange
OSYFG25 2½" flange x 2½" groove flange x groove
OSYFG3 3" flange x 3" groove flange x groove
OSY4FG 4" flange x 4" groove flange x groove
OSY6FG 6" flange x 6" groove flange x groove
OSY8FG 8" flange x 8" groove flange x groove
OSY10FG 10" flange x 10" groove flange x groove
OSY12FG 12" flange x 12" groove flange x groove