Rocker Lug Expansion Ring Coupling include NST, NPSH, NPT thread.
NST coupling: National Standard Thread, also known as National Hose (NH) thread, is one of the more common couplings used in fire equipment. The male and female straight (non-tapered) threads screw together and the connection is sealed with a gasket.
ROCKER LUG EXPANSION RING COUPLING | ||
SIZE | BOWL | THREAD |
1 1/2" | 1 11/16", 1 3/4", 1 13/16', 1 15/16" | NST(NH),NPSH, NPT |
2" | 2 5/16", 2 3/8" | NST(NH),NPSH, NPT |
2 1/2" | 2 11/16", 2 3/4",2 13/16",2 15/16" | NST(NH),NPSH, NPT |
3" | NST(NH),NPSH, NPT | |
4" | NST(NH),NPSH, NPT | |
MATERIAL: | ALUMINUM OR BRASS | |
