The low-pressure diaphragm all-stainless steel pressure gauge is a highly accurate instrument designed for measuring low-pressure, micro-pressure, and negative-pressure (vacuum) media. Manufactured in China, this gauge stands out among suppliers for its precision and durability.

Featuring a core elastic sensing element made of a corrugated diaphragm, this pressure gauge is engineered entirely from stainless steel. It is specifically suited for measuring the pressure or vacuum of low-pressure gases and liquids that are corrosive to copper alloys and ordinary carbon steel while remaining non-solidifying and non-crystallizing. Our factory ensures that each unit meets rigorous quality standards.

The operating principle involves the measured medium applying pressure on the stainless steel corrugated diaphragm, resulting in elastic deformation. This deformation is amplified through an internal transmission mechanism that employs linkage and gears, driving a pointer to rotate on the dial for a clear visual indication of pressure values. In the case of negative pressure, the diaphragm is compressed, causing the pointer to indicate the opposite direction.