Valve stem

The valve stem is an important component of a valve, used for transmission. It is connected to the actuator or handle, directly driving the valve core to move or rotate underneath it, thereby achieving the opening and closing or adjustment of the valve.

Characteristics of valve stem

The valve stem is not only a moving and load-bearing component, but also a sealing element during the opening and closing process of the valve. Simultaneously subjected to the impact and corrosion of the medium, it also generates friction with the packing. Therefore, when selecting valve stem materials, it is necessary to ensure that they have sufficient strength, good impact toughness, scratch resistance, and corrosion resistance at the specified temperature. The valve stem is a vulnerable component, and when selecting, attention should be paid to the machinability and heat treatment performance of the material.

Common materials for valve stem

1. Copper alloy

2. Carbon (plain) steel

3. Alloy steel

4. Stainless steel

5. Chromium steel for bearings