Brass 2 1/2" Fire Hydrant Gate Valve Male Threads_NYFD It's usually installed on the Female Size_4 Inch 2 inch NH NST Model:3160 (6.0 TPI x 3.125 OD) DA30M20MN

It's usually installed on the inlet side (Suction Side) of a water pump to keep it from losing it's prime during the off cycle

Heavy duty 4 1/2 inch replacement iron fire hydrant cap with NH / NST threads including chain

Complete female to male coupling set

Equivalent part number - FM25F25NYC

Brass 2 1 2" Fire Hydrant Gate Valve Male Threads_NYFD It's usually installed on the Female Size_4 Inch 2 inch NH NST Model:3160 (6.0 TPI x 3.125 OD) DA30M20MN It's usually installed on the inlet side (Suction Side) of a water pump to keep it from losing it's prime during the off cycle Heavy duty 4 1 2 inch replacement iron fire hydrant cap with NH NST threads including chain