Union

A union is made of either steel or PVC. Most unions are pressure rated. A union consists of two male threaded pieces, connected by a threaded oversized nut. the pipe couplings are either socket-weld or threaded. PVC unions have been known to blow up on hybrids before. Boogieman and LuckyThirteen13's PVC unions have exploded before. Variations on the unio have been made like 90 degree unions.