The SZW-40-110VAC Stainless Steel Solenoid valve has 1-1/2” Female NPT ports. This is a 2 way normally closed valve that will hold its closed position and open only when power is applied. It is gravity feed capable and requires no pressure to open. This is a fast acting solenoid valve that will change position in less than 1 second. This particular valve is compatible with a variety of media types including air, water, gas and other low viscosity fluids. This valve will operate with standard 120V power usually found in most residential and commercial applications.
The SZW-40-110VAC has a voltage tolerance of +-10% making it compatible with most residential and commercial 120 Volt power sources. This valves coil requires 40 watts or 0.50 amps of power to open. The valve has flying lead wires that can be connected with your own terminals or directly soldered. It is rated for continuous duty however it should not be used as a fail-safe left on indefinitely only to close when an power outage occurs. The valve can be used media temperatures ranging from 15°F up to 250°F. The recommend pressure range is from 0 PSI to 145 PSI.
The valve body is made of 304 Stainless Steel and it uses a Viton Diaphragm. These materials are food grade and this valve can be used for food, beverage and potable water applications.
The orifice size is 40mm and the flow rate can be calculated using a Cv of 29. For example it is capable of passing 220 GPM of water at 60 PSI. This solid Stainless Steel valve weights approximately 4lbs 14ozs, dimensions are 6” tall, 3.35 width and 4.33” port to port.
The coil has no polarity making power and ground interchangeable. There is an arrow indicating the direction of flow on the stainless valve body. Installed with the coil up is the preferred method however the valve will operate in any position. A pre-filter should be installed to prevent the valve from leaking caused by debris.
*Consult a chemical compatibility expert for correct seal and valve body material choice.
After one week, so far so good
Seems to be working as described
Cost of the value was very competitive and reasonable. Then the electrician charged $270 to install a breaker, light switch on the wall, and connect the Solenoid. The plumber charged $225 to install the solenoid. So the entire process was close to $700. I bought this because the plastic nut on the back of a toilet broke on a Saturday and when we found the water on Monday morning (5000 gallons of water later) we had over $40,000 worth of damage and all floors and baseboards had to be removed, building dried out, etc. Took over a month to get back to normal. If this valve will prevent that I will be very happy.