... -proof IP65 3.Stainless Steel Water Solenoid Valve 2S series solenoid valve are 2/2way, direct action, stainless steel valve body ... , are most popular valves for many conditions, especially in the water treatment system, such as water heater. ... 1/8 " ~2 "2) Working Medium: air, water, oil, gas3) Action Type: direct action4) Valve Body: 2W: Brass or 2S:Stainless ...