Figure 206 hammer union is designed of O-ring to the male sub, which is used as the secondary seal. So the O-ring in the male sub can improve the sealing effect, besides, it can protect the metal-to-metal sealing from corrosion. The O-ring is replaceable, which can extend the service life of union greatly. The subs and nuts of figure 206 hammer union are interchangeable with the figure 200 hammer union, making the figure 206 hammer union widely used in many industries. It has compact structure and it is widely used in low pressure well pipeline. It also meets the requirements of medium pressure air, water, oil or gas. It is recommended for manifold line connection and it is suitable for the negative pressure and corrosion conditions. Its cold working pressure is 2000 psi and the test pressure is 3000 psi. The nuts are blue and parts are gray. It can be threaded for the pipeline and the butt weld is also available.

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