The BZW-20K-24VAC is a ¾”, 2-way solenoid valve configured in a normally open position. The body is constructed of solid brass with female NPT inlet and outlet ports. This valve requires no minimum differential pressure to operate and will remain in the open position until power is supplied by a 24 VAC source. This particular valve has a Viton seal which can handle various media types such as air, water, gas, diesel fuel, acids and alkali.
This normally open solenoid valve requires power to close and will re-open when power is removed. It is easily connected by way of a DIN connector with 5" lead wires.
*Consult a chemical compatibility expert for correct seal and valve body material choice.
The valve is supposed to be normally open and support gravity flow. However, it takes a few psi to actually have any flow in the normally open position. The unit I received had a defective coil upon arrival. The company replaced the coil free of charge and I had it within 3 days.