Materials and Construction:

Housing: Typically made from 304 or 316 stainless steel for excellent corrosion resistance.

Bourdon Tube: Usually constructed from stainless steel or another corrosion-resistant alloy, essential for accurate pressure measurement.

Connection: Stainless steel connections (e.g., NPT, BSP) ensure secure and leak-proof installation.

Types of Pressure Gauges:

Bourdon Tube Gauges: Most common, using a coiled tube that straightens under pressure.

Diaphragm Gauges: Use a diaphragm that flexes under pressure, suitable for lower pressure ranges.

Capsule Gauges: Ideal for measuring very low pressures, using a pair of diaphragms.