The kit provides the electrical enclosure and internal relays

The unit is designed for versatile differential pressure monitoring

making it an ideal drop-in replacement for legacy Erie zone valve bodies

2-inch shaft

While functional in many positions

McDonnell & Miller FS7-4 Switch Els PW 17895 The kit provides the electricalThe McDonnell & Miller FS7 4 is a heavy duty, industrial liquid flow switch designed for high capacity systems requiring precise monitoring of start stop operations. Engineered with a 1 1 4" NPT connection and a SPDT snap switch, this unit serves as a critical safety interlock for large boilers, chillers, and process cooling applications. It features a maximum operating pressure of 300 PSI and can handle liquid temperatures up to 300F (149C). The Part