1、 Characteristics of solenoid valve
1. Choose different types of solenoid valves for gas, liquid or mixed states, such as ZQDF for air, ZQDF-Y for liquid, ZQDF-2 (or -3) for steam, otherwise it may cause misoperation. The ZDF series multifunctional solenoid valve can be connected to air Liquid. It is best to inform the media status when booking, so that the installation user does not need to adjust it again.
2. Products with different specifications and medium temperatures may cause the coil to burn out and the seals to age, seriously affecting their lifespan.
3. The viscosity of the medium is usually below 50cSt. If the diameter exceeds 15mm, use the ZDF series multifunctional solenoid valve for special ordering. High viscosity solenoid valve with a diameter less than 15mm.
4. When the cleanliness of the medium is not high, a backwash filter valve should be installed in front of the solenoid valve. When the pressure is low, a direct acting diaphragm solenoid valve such as CD-P can be used.
5. If the medium flows in a directional manner and does not allow reverse flow, ZDF-N and ZQDF-N need to flow in both directions. Please make special requirements. The temperature of the medium should be selected within the allowable range of the solenoid valve.
2、 Pipeline parameters
1. Select valve ports and models based on the requirements of medium flow direction and pipeline connection method. For example, for switching from one pipeline to two pipelines, CA5 and Z3F are selected for small diameters, and ZDF-Z1/2 is selected for medium or large diameters. For controlling the convergence of two pipelines, please choose ZDF-Z2/1, etc.
2. Select the nominal diameter based on the flow rate and valve Kv value, or choose the same pipe inner diameter. Please note that some manufacturers do not indicate the Kv value, and the valve hole size is often smaller than the interface pipe diameter. Do not be tempted by low prices and make mistakes.
3. Work pressure difference. Indirect pilot type can be used when the minimum working pressure difference is above 0.04Mpa; For those with a minimum working pressure difference close to or less than zero, direct acting or step-by-step direct acting must be selected.
3、 Environmental conditions
1. The maximum and minimum temperatures of the environment should be selected within the allowable range. If there is any deviation, special orders should be made.
2. In environments with high relative humidity and water droplets and rain, waterproof solenoid valves should be selected.
3. Special types such as marine solenoid valves should be selected for situations where there are frequent vibrations, bumps, and impacts in the environment.
4. When used in corrosive or explosive environments, priority should be given to selecting corrosion-resistant materials based on safety requirements.
5. If the environmental space is limited, please choose a multifunctional solenoid valve as it eliminates the need for a bypass and three manual valves, and is easy to maintain online.
