Common sense of solenoid valve
1. Corrosive medium: plastic king solenoid valve and all stainless steel should be used; isolation diaphragm type must be used for strong corrosive medium. Example CD-F. Z3CF. For neutral media, it is also advisable to use a solenoid valve with copper alloy as the valve shell material. Otherwise, rust chips often fall off in the valve shell, especially in occasions where the action is infrequent. Ammonia valves cannot be made of copper.
2. Explosive environment: products with corresponding explosion-proof grades must be selected, and waterproof and dust-proof varieties should be selected for outdoor installation or in dusty occasions.
3. The nominal pressure of the solenoid valve should exceed the higher working pressure in the pipe.
1. Medium characteristics
1.1 Choose different types of solenoid valves for gas, liquid or mixed state, for example, ZQDF is used for air, ZQDF-Y is used for liquid, and ZQDF-2 (or -3) is used for steam, otherwise it is easy to cause malfunction. ZDF series multi-function solenoid valve can be connected to gas and liquid. It is better to inform the state of the media when ordering, so that the installation user does not have to adjust the mode.
1.2 The medium temperature is different for products of different specifications, otherwise the coil will burn out and the seals will be aged, which will seriously affect the lifespan.
1.3 Medium viscosity, usually below 50cSt. If it exceeds this value, the ZDF series multi-function solenoid valve should be used for special order if the diameter is larger than 15mm. The diameter is less than 15mm to order high viscosity solenoid valve.
1.4 When the cleanliness of the medium is not high, a recoil filter valve should be installed in front of the solenoid valve. When the pressure is low, a direct-acting diaphragm solenoid valve can be used as CD-P.
1.5 If the medium is in directional circulation, and reverse flow is not allowed, ZDF-N and ZQDF-N only need to use bidirectional circulation, please make special requirements.
1.6 The medium temperature should be selected within the allowable range of the solenoid valve.