Pressure reducer with two pressure gauges - has asymmetric feet to prevent location on wrong pressure ports

摘要

A pressure vessel such as a gas bottle has two similarly sized pressure gauges, one or the high pressure within the vessel and one for the reduced delivery. To prevent assembly on the wrong pressure ports, the locating parts are assymmetrically desgined. The high pressure gauge (22) locates onto a tapping port, as does the low pressure gauge (24) onto a similar port. The gauges are produced with feet that locate ont he surface of the reducer and shorter feet that locate against a boss. With incorrect assembly the difference in length of the support feet prevents adequate location.