What is the right valve for high pressure water applications?

What is the right valve for high pressure water applications?

Now that you know the operating parameters of your hydraulic system, you need to specify the high pressure water valves necessary to meet the operating and actuation requirements of your application. Will a mushroom valve meet your needs? Or do you need the robust performance of a hollow spore gate valve?

Here are the most common high pressure water valve designs for hydraulic applications:

1. POPPET VALVE:

Operation: A cone or ball-shaped plug is held in place on the valve seat by a return spring or a hydraulic piston when it is operating normally closed. When the plug is allowed to move away from the valve seat, the fluid flows through the valve.

Actuation: The check valves can be controlled by manual operation, a solenoid, pneumatic / hydraulic pressure or a combination of methods.

Advantage: This industrial valve offers a higher flow rate than the gate valves. Its internal seals undergo less wear, extending its operational life.

2. COIL VALVE:

Operation: This industrial valve contains a piston or a coil which expands and retracts in the valve housing. When the coil moves, it opens or closes the holes in the valve body. The flow through the valve is determined by the position of the coil.

Actuation: This industrial valve is actuated in a similar way to the mushroom valve.

Advantage: The spool valves are not affected by pressure, which requires less force for actuation. They are balanced and can be used for vacuum operation.

3. HOLLOW BORE COIL VALVE:

Operation: With this type of industrial valve, the coil is hollow and contains a series of regularly spaced slots on the circumference of the coil.

Actuation: In the open position, the coil is deployed to a position where the slots are located between two seals. As the fluid enters the inlet, it travels through the valve body, through the coil, through the slots, and through the valve outlet. When the coil is retracted, a section of the piston without slots moves between the seals to prevent the flow from reaching the outlet. The seals are only briefly subjected to the flow of water, which is advantageous when working with fluids containing contaminants.

Advantage: this valve can work for long periods with water containing a certain degree of contamination by sand or scale.

Remember to plan ahead when selecting components for your hydraulic system, including high pressure water valves, to achieve the safety and performance required by your application.

When selecting valves for high pressure water systems, experienced engineers take the time to choose the right components during the initial design process. Moving high pressure water through valves and other system components creates several unique challenges.

This white paper deals with:

• Several methods for establishing the operating parameters of high pressure valves.
• How to use the operating parameters to select the best valve for high pressure water applications.
• Common configurations for two of the most commonly used valves for high pressure hydraulic hydraulics.