Solenoid valve repair using performance about

Solenoid valve repair, valve repair, a relatively small number, are automated valves, performance must be noted that the use of the electromagnetic valve repair:

  First, the security:

 

   Corrosive media: the king should use plastic solenoid valve and all stainless steel; neutral medium, it should use copper alloy for valve solenoid valve of the shell material, the ammonia valve can not use copper.

 

   The 2. Explosive environment: pneumatic valves used in explosive atmospheres, the solenoid valve must choose the appropriate proof grade products, open-air installation or the dust more occasions should use waterproof, dustproof varieties.

 

   3 Use pressure: the solenoid valve nominal pressure should exceed the maximum working pressure tube.

 

Second, applicability:

 

1, the dielectric characteristics

 

   (1) the state of the media, liquid or mixed states were selected different varieties of solenoid valves, Example ZQDF for the air, ZQDF-Y for liquid ZQDF-2 (or 3) for steam, or easily cause malfunction . ZDF Series multifunction solenoid valve can be altogether in the air. Liquid.

 

(2), medium temperature, the selection shall not be treated, the coil will burn, seals aging seriously affect the life of life.

 

   (3), medium viscosity, usually 50cSt the following. If this value is exceeded, the diameter greater than 15mm ZDF series multifunction solenoid valve as a special order. Diameter less than 15mm high viscosity solenoid valve.

 

(4), media cleaning, not before the solenoid valve should be equipped with recoil filter valve.

 

   (5), medium flow, are not allowed back and the requirement of a two-way flow, please make a special request.

 

2, the pipe parameters

 

   (1) to select valve openings and models, according to media flow requirements and pipe connections.

 

(2), according to the flow and valve Kv values ​​selected nominal diameter, with the inside diameter of the pipe is also optional. Please note that some manufacturers are not marked with the Kv value is often less than the interface diameter valve hole size must not covet a low price and makes a botch.

 

   (3), the work of the pressure difference

 

Minimum working pressure 0.04Mpa more, optional indirect Pilot; minimum working pressure is close to or less than zero must use direct action or step-Direct.

 

Environmental conditions:

 

    Temperature, humidity, vibration, corrosion, explosion and environmental

 

4, power conditions

 

   (1), were selected according to the type of power supply, AC and DC solenoid valve.

 

   (2), the voltage specifications used as preferred AC220V.DC24V

 

Third, reliability:

 

   (1) The working standard: three kinds of points of long-term work, repeated short-time work and short-time working.

 

   (2) Operating Frequency: pneumatic butterfly valve and solenoid valve operation frequency requirements, the structure should preferably direct acting solenoid valve, the power to listen to the exchange preferred.

 

Fourth, the economy:

 

   Principle (1), it is optional, it must be safe, reliable, on the basis of the economic.

 

   (2), the economy is not just the prices, but the cost performance of the product cost price than

 

 

Valve repair factory URL: http://www.olschina.com Tel :0510-86,101,511 13,515,194,999