Threaded Hammer Union

Gulf Threaded Hammer Union FIG 206

Gulf Threaded Hammer Union (GHU)

(Figure 206)

Available for standard service in all sizes 2000 psi cold working pressure 3000 psi test working pressure

Recommended to be used:

Recommended for air, water, oil or gas and mud service. A Buna-N ‘O’ ring is mounted on the plain sub to provide an additional seal. Subs and nuts of the Fig. 206 unions are interchangeable with the Fig. 200 unions. Standard subs are threaded for API line pipe. Sizes of 2″ and above also available with butt weld ends connections.


  • O-ring in male sub improves sealing and protest metal-to-metal seal against corrosion
  • O-ring can be replaced to extend union service life



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