AWWA C515 FLANGED RESILIENT OS&Y GATE VALVE, FIG # XZ41X-Gate Valve-Valve-玫德集团英文
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OS&Y Gate Valve 1-1/2 in.
Victaulic FireLock™ Series 771H OS&Y Gate Valve - Gate Flow Control
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Flanged Gate Valve - OSY- 8"
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OS&Y Valve - YouTube
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Beric Fig.103-04-RF-AA08-H, 4" #300 Flanged Cast Steel OS&Y Gate Valve | eBay
Arita UL/FM Fire Protection OS&Y Gate Valve 300PSI Flange Groove RGA33 Series
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OS&Y Flanged Gate Valve. 175 PSI. UL/FM. NIBCO | Fire Supply House
