Hydraulic Direction
Control Valves

Chrome plating is usually applied to the moving parts inside the valve such as valve seats, pistons and valve stems. This is because chrome plating provides a number of advantages:

• Friction Resistance:The chrome plating reduces the frictional resistance of the moving parts inside the valve. This allows the valve to operate more efficiently with lower driving friction.

• Wear Resistance:The chrome plating makes the moving parts inside the valve more resistant to wear. This ensures the valve has a long life and requires less maintenance.

• Corrosion Resistance:The chrome plating protects the parts inside the valve from corrosion. Corrosion can be a major problem, especially in hydraulic systems, as it can come into contact with water, moisture or other environmental factors. Chrome plating makes valve parts corrosion resistant.

• Easy to Clean:Because the chrome-plated surface is smooth, valve parts can be cleaned more easily. This ensures clean and smooth operation of the valve.

However, not all hydraulic directional control valves need to be chrome plated. Some valve parts or surfaces may be chrome plated, while other parts may have different surface treatments or coatings. The choice of coating or surface treatment is determined by the function of the valve parts, the operating conditions and the design.

In summary, chrome plating in hydraulic directional control valves is often preferred to improve the friction, wear, corrosion and cleanability properties of moving parts. However, it is important to note that not every valve part requires chrome plating and different surface treatments may be used depending on valve design, function and application.