What is an ammonia pressure gauge?

What is an ammonia pressure gauge?

Ammonia pressure gauge is a direct indicator pressure gauge for measuring ammonia or liquid ammonia.

The elastic element (refers to the spring tube) of the ammonia pressure gauge is made of materials that can resist ammonia corrosion. The other parts of the pressure gauge should be resistant to ammonia corrosion or coated (coated) to resist ammonia corrosion.

Because copper or copper alloy is not resistant to ammonia corrosion, while iron or steel is resistant to ammonia corrosion, and the price is relatively cheap, the materials of spring tubes and movements are generally 1Cr18Ni9Ti stainless steel, and the joint materials are generally 45 # steel. According to Anticorrosion requirements of steel, the surface of the joint can generally be treated by boiling black.

A yellow horizontal line should be drawn under the pressure gauge name on the dial of the ammonia pressure gauge.