Solenoid valve for water, gas, and liquid

Solenoid Valve Models for Water, Gas, Liquid, and Plastic Applications: DFD / RSP / 2W / ZW / 2W-SL / YSA A solenoid valve is a switching element that uses electromagnetic force to automatically control the on/off of fluid flow. It is widely used in pipeline control systems for water, gas, and various liquids. Its working principle is as follows: when the solenoid coil is energized, it generates a magnetic force that attracts the valve core or moving iron core, thereby changing the on/off state of the valve port. When power is cut off, the valve resets by spring force.The solenoid valves produced by Kaivex Valve Group can be categorized as follows:Water Solenoid Valves: Commonly used in water supply and drainage, irrigation, and HVAC equipment. Pilot-operated structures are often selected to reduce power consumption. Common models include the 2W series, etc.Gas Solenoid Valves: Suitable for air, natural gas, inert gases, etc. Due to the compressibility of gases, higher sealing performance is required, and attention must be paid to response speed and explosion-proof safety. Direct-acting or semi-direct-acting solenoid valves are often chosen for gaseous media to ensure reliable opening even under low or zero differential pressure.Liquid Solenoid Valves: These cover a wide range of applications, including oil products, weak acid/alkali solutions, and chemical media. Appropriate valve body materials (such as stainless steel, UPVC, etc.) and sealing materials (such as NBR, FKM, EPDM, PTFE, etc.) must be selected based on the viscosity, temperature, and corrosiveness of the liquid. For low-temperature or high-temperature liquids, the heat dissipation and temperature resistance rating of the coil must also be considered.