Interchangeability

Hammer Unions are interchangeable with WECO or other manufacturers adhering to the industry standards.

Thread Gauging

Acme thread and line pipe threads are gauged by standard plug & ring gauges.

Sealing Design

The conical and spherical surfaces of the female and male subs respectively; form an effective metal-to-metal seal in case of low pressure services.

For medium pressure mostly; an 'O' ring is provided in the male sub; in addition to the metal to metal seal. For high pressure, a lip type seal ring is provided for primary seal in the female sub. The seal protects the secondary metal to metal seal from corrosion and limits fluid flow turbulence. For sour service applications, viton seals are provided.

Coating

As a special case PARVEEN can also provide Unions with zinc galvanized coating. Unions are also supplied with special materials such as stainless steel, SS-304, SS-316, Duplex etc.