Swivel gauge adapters are used for easy positioning of a pressure gauge. With the BDT47 swivel gauge design it is possible to adjust the dial face 360° in order to get the best position of readability of the pressure gauge. The swivel gauge prevents difficulties with mounting and positioning NPT thread without the risk of over or under tightening which can cause leakages. This design uses a metal to metal closing system which removes the sealing ring from the assembly. Al wetted parts are made out of the alloy selected.