Hammer Union

1) Low pressure Service (1000 to 2000 PSI Range), the spherical surface of the male sub and the cone shaped surface of the female provide a metal-to-metal seal.

2) Medium Pressure Service (2000 to 4000 PSI Range), the metal-to-metal seal is supplemented with a resilient seal ring.

3) High Pressure Service (6000 to 9000 PSI Range), A replaceable, lip type seal ring is part of the female sub. This seal ring reduces flow turbulence and protects the metal-to-metal seal from corrosion.