Rocker-Lug Fire Hydrant Caps and Plugs


Thread these caps and 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). Caps and plugs are brass for good corrosion resistance.
NH/NST (National Hose/National Standard) threads are only compatible with other NH/NST threads. NPSH (National Pipe Straight Hose) threads are compatible with male NPSH, NPT, NPTF and NPSM threads.
Fire Hose Trade Size | Thread Type | Material | Lg. | Chain Lg. | Each | |
Cap | ||||||
---|---|---|---|---|---|---|
1 | NH/NST | Brass | 1 7/32" | 9" | 00000000 | 000000 |
1 1/2 | NH/NST | Brass | 1 1/8" | 9" | 00000000 | 00000 |
1 1/2 | NPSH | Brass | 1 1/8" | 9" | 00000000 | 00000 |
2 1/2 | NH/NST | Brass | 1 7/16" | 9" | 00000000 | 00000 |
2 1/2 | NPSH | Brass | 1 9/16" | 9" | 00000000 | 00000 |
Plug | ||||||
1 1/2 | NH/NST | Brass | 1 11/16" | 9" | 0000000 | 00000 |
2 1/2 | NH/NST | Brass | 2 3/32" | 9" | 0000000 | 00000 |
Diesel Fuel Tank Caps


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.
Cap with vent will automatically open when the internal pressure reaches between 6.5 psi to 8.5 psi to relieve pressure.