Hammer unions are one of the most popular connections in the oil patch. Their ease of makeup and disassembly along with economical design make them the ideal choice when fast and reliable connections are needed between piping units. Hammer union parts are all painted with industry standard color coding for easy identification. Male and female subs can be supplied in both threaded and buttweld ends. In addition to standard service unions, Apache Pressure Products also offer several specialized unions such as the Fig 211 insulated union and the Fig 300 flat face union where a limited connection space becomes a consideration.