Thread these caps onto fire hydrants and washdown equipment to close off the line. Their rocker lugs are easy to grip, so you can tighten them quickly. Tighten with a hook-style spanner wrench (not included). Caps are brass for good corrosion resistance.
NH/NST Thread—NH/NST (National Hose/National Standard) threads are only compatible with other NH/NST threads.
NPSH Thread—NPSH (National Pipe Straight Hose) threads are compatible with male NPSH, NPT, NPTF and NPSM threads.
Often used with trailers, compressors, and other equipment tanks, these caps meet Department of Transportation requirements. Caps have fusible plugs that will melt when the outside environment reaches their opening temperature.
Fuel Caps with Vent—Cap with vent will automatically open when the internal pressure reaches between 6.5 psi to 8.5 psi to relieve pressure.
Thread these plugs onto fire hydrants and washdown equipment to close off the line. Their rocker lugs are easy to grip, so you can tighten them quickly. Tighten with a hook-style spanner wrench (not included). Plugs are brass for good corrosion resistance.
NH/NST Thread—NH/NST (National Hose/National Standard) threads are only compatible with other NH/NST threads.
Chicago Fire Department Thread—Chicago Fire Department threads are only compatible with other Chicago Fire Department threads.