Gas point of use comprising: a monobloc body (12) having a front surface (14), a rear surface (16) and side surfaces (18); several devices (28, 30, 32, 34) arranged on the front surface (14) of the piece body (12), a manometer (32) with a housing (50) and an end piece connection (52) center rear , said housing (50) being housed in a housing of the manometer (32) accessible from said front surface (14), penetrating said connecting endpiece (52) sealingly in said monoblock body (12); characterized in that said side surfaces (18), a first inlet (361) and a first output connection (381) have their parallel to a first direction (x) axis, a second inlet (362) and a second output connection (382) have their axes parallel to a second direction (y), said first direction (x) and said second direction (y) orthogonal to each other; and it comprises a first positioning means (54) integral with said pressure gauge (32) and a second positioning means (58) secured to said one-piece body (12), cooperating said first and second positioning means (54, 58) mode that can block said manometer (32) rotating in its housing manometer (56) in four different angular positions, which are separated each time by 90 °.
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