this is an Open-Low control designed for the low-pressure side of the system to prevent vacuum operation or manage pump-down cycles

and fan coil systems

Can the Maxitrol 325-5 be used for outdoor installations

What does the NEMA 4X rating signify for this solenoid

ASCO 8221G3-240V Solenoid Valve Els PW 29614 this is an Open-Low controlThe ASCO 8221G3 240V Solenoid Valve is a high performance 2 way normally closed valve engineered specifically for water service where system protection is a priority. This 1 2" NPT solenoid valve features a specialized slow closing pilot operated design with an integral snubber that effectively mitigates water hammer. By slowing the disc closing speed, the ASCO 8221G3 reduces pressure spikes, often eliminating the need for additional surge suppressors