3CR13 pressure regulating valve ball

Category:

Customized precision small shafts and pins

Keywords:

The pressure regulating valve ball is an intuitive and simple flow control device. The flow pressure regulating valve ball used in the pipe network can directly set the flow according to the design.

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- Commodity name: 3CR13 pressure regulating valve ball
- Commodity ID: 1182644307135975424
The pressure regulating valve ball is an intuitive and simple flow control device. The flow pressure regulating valve ball used in the pipe network can directly set the flow according to the design.

We have special machines and production processes, we are professional in manufacturing ultra-short ultra-small shafts and pins. We usually use raw material such as GCR15 , SUJ2 , AISI52001, 100Cr6, SUS440C, SUS303/304, SUS420J2 and so on. These shafts and pins are widely used in automobile, motorcycle, garden tools, electronic products, medical devices, micro-motor, communication products and some other use. Welcome to customize shafts or pins with drawings.

The pressure regulating valve ball is an intuitive and simple flow control device. The flow pressure regulating valve ball used in the pipe network can directly set the flow according to the design. The valve can automatically eliminate the remaining pressure head and pressure fluctuations of the pipeline under the action of water. The flow deviation caused by the system keeps the set flow constant no matter how the system pressure changes. These functions of the valve make the pipe network flow adjustment completed at one time, turning the network adjustment work into a simple flow distribution, and effectively solving the hydraulic imbalance of the pipe network. . The flow pressure regulating valve ball is mainly used in: central heating (cold) and other water systems, so that the pipe network flow can be distributed on demand, eliminating the hydraulic imbalance of the water system, and solving the problem of uneven heating and cooling.

For the high-pressure and small-flow pressure regulating valve ball, a series of problems caused by high pressure and high pressure difference must also be considered. For example, the actuator must have enough output force to overcome the unbalanced force of the medium, the strength of the valve parts, and the high-pressure sealing problem. The most important thing is the material and processing of the valve core and valve seat.

The reasons for the damage of the ball valve core and valve seat of the high-pressure regulator are very complicated. The theories are not the same. However, it is the scour phenomenon caused by the movement of the high-speed liquid (gas) flow relative to the valve core and valve seat (also known as the velocity effect). ) And the cavitation phenomenon of liquid medium under high pressure difference. The damage form of the former is the scour marks that have a certain relationship with the streamline, and the damage of the latter is the spongy hole.

In the case of cavitation, if the valve core and valve seat materials are not properly selected, the valve will be scrapped for as few as a few days or as long as a few months.
To solve the problem of cavitation, we should start with methods to avoid cavitation and materials that are resistant to cavitation. There are several ways to avoid cavitation.

1. Improve the design of the valve core and valve seat, so that it has a reasonable distribution of liquid flow velocity and pressure. For example, the small flow pressure regulating valve ball adopts a long and narrow channel valve core and valve seat. The valve core and valve seat hole have a small taper, which is suitable for accurately controlling the flow under the condition of constant upstream pressure. Since this structure has the function of absorbing energy and reducing cavitation, according to data reports, it has been used for a pressure drop of 4200 kg/cm 2.

2. When conditions permit, aerate in the liquid flow to partially or completely eliminate the low pressure area.

3. Valves are used in series to reduce the pressure drop of each valve.

4. Make the pressure difference between the front and rear of the valve lower than the maximum allowable pressure difference of the medium at the inlet temperature of the pressure regulating valve ball to produce cavitation.

5. The medium works in the "flow open" state, and the allowable pressure difference is more than three times larger than the "flow closed" state.
Key words:
- pressure regulating valve ball
We have special machines and production processes, we are professional in manufacturing ultra-short ultra-small shafts and pins. We usually use raw material such as GCR15 , SUJ2 , AISI52001, 100Cr6, SUS440C, SUS303/304, SUS420J2 and so on. These shafts and pins are widely used in automobile, motorcycle, garden tools, electronic products, medical devices, micro-motor, communication products and some other use. Welcome to customize shafts or pins with drawings.
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