Combined type inner diaphragm pressure gauge and mounting assembly

A mounting assembly, comprising a combined type inner diaphragm pressure gauge, and a pressure wall (80) for mounting the pressure gauge, wherein the combined type inner diaphragm pressure gauge comprises a support seat (10), wherein an accommodating cavity (14) is formed inside the support seat (10), a dial (20) is disposed on top of the support seat (10), the dial (20) is fixedly connected with an upper surface of the support seat (10), a center pin (31) is disposed inside the support seat (10), a pointer (40) is fixedly connected with a top end of the center pin (31), an inner diaphragm (50) is disposed inside the support seat (10), the accommodating cavity (14) is covered by the inner diaphragm (50), and an outer gasket (60) made of flexible material is fixedly connected with an outer side of the inner diaphragm (50), the pressure wall (80) is provided with an opening (81) engagable with the connection seat (70), and the opening (81) communicates with a pressure zone (82) inside the pressure wall (80);

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• wherein the connecting seat (70) of the pressure gauge is engaged in the opening (81), and the outer gasket (60) faces the pressure zone (82) inside the pressure wall (80), thereby a pressure source at the pressure zone (82) directly applies pressure to the outer gasket (60) and the inner diaphragm (50).