The necessity of valve model selection

 

Adjusting the valve structure and model selection is based on a comprehensive consideration of factors such as the applied medium, temperature, working pressure before and after the valve, total flow, physical properties of the medium and the level of cleanliness of the medium. The accuracy and rationalization of valve construction selection is immediately correlated to application performance, tuning performance, tuning reliability, and service life.

 

The information content of working conditions that must be implemented in valve model selection

 

1. Processing parameters:

 

1. The name of the medium.

 

2. The relative density, viscosity, temperature, and cleanliness of the medium (with fine particles).

 

3. Physical and chemical properties of the medium: such as corrosion, toxic and side effects, and pH.

 

4. Total flow of medium: larger, everything is normal, minimum.

 

5. The working pressure before and after the medium valve: larger, everything is normal, minimum.

 

6. The viscosity of the medium, the greater the viscosity, the more harmful the calculation of the Cv value.

 

This parameter is mainly used to measure the necessary specifications of the valve, rated value Cv value and other specification parameters, and the appropriate raw materials for the valve should be selected.

 

Second, the parameters of versatility:

 

1. Posture method: electric, pneumatic, hydraulic, hydraulic press.

 

2. Valve function: adjustment, disconnection, adjustment and disconnection are used together.

 

3. Operation method: locator, relay, pressure regulating valve.

 

4. Posture time regulations.

 

This part of the parameters is mainly used to clarify some accessories and machinery that must be equipped with the multi-functionality of the valve.

 

3. Explosion-proof safety protection parameters:

 

1. Anti-fever level.

 

2. Waterproof grade.

 

4. Natural environment and driving force parameters:

 

1. The temperature of the natural environment.

 

2. Driving force parameters: working pressure of pneumatic valve, working pressure of switching power supply.

 

Frequently Asked Questions about Valve Replacement

 

If the valve is to be replaced, the following specifications should also be given to prevent the valve from being inconsistent, or the selected specification is different, or the valve [structural form is different, resulting in the valve cannot be installed, or cannot be installed, Or there is a shortage of indoor space.