Mud Tank Union is a kind of Hammer Union with nitrile seal O-ring, specially designed for quick joins and rapid removals of drilling mud pipelines in oilfield mud tank systems, such as pump suction lines, mud mixing lines, water lines, etc. Even if the mud tanks are not aligning perfectly, Hammerseal Unions make up a tight for a non-leak seal.

Hammerseal Union is also widely used for lower pressure, large diameter, big misalignment pipelines, and frequent disassembly pipeline connections. Due to the excellent performance of the mud tank union, the large dislocation does not affect the connection and disassembly of the pipeline. Sealing, which meets the special requirements of rapid installation and disassembly on-site, is of great significance for reducing the labor intensity of workers and shortening the good construction period. It is an upgraded product of the Air O Unions.

Structure Design


The externally threaded female portion of the union welds to a stub of pipe at the tank wall. The connecting pipe extends through the nut, the macro o-ring, and then into the female. When the internally threaded nut hammers tight onto the female, the o-ring compresses into a “D” square cross-section; this seals fluid pressures up to 150 psi against the outside diameter of the connecting pipe, ideally for the solids control system.