A brief explanation of the Outside Screw/Stem and Yoke (OS&Y), Fire Department Connection (FDC) and the Post Indicator Valve (PIV).
Негізгі бет OS&Y, FDC and PIV
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A brief explanation of the Outside Screw/Stem and Yoke (OS&Y), Fire Department Connection (FDC) and the Post Indicator Valve (PIV).
Пікірлер: 13