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providing reliable supplemental or emergency heat
streamlining connection tasks for field contractors
this unit is IP66/IP67 rated for superior moisture protection in high-humidity environments
minimizing energy waste while maximizing static pressure performance
this 24V DC steam coil provides the reliable electromagnetic force required for consistent valve actuation in demanding process heating systems
McDonnell & Miller FS7-4SJ Snap Switch Refrigerant providing reliable supplemental or emergencyThe McDonnell & Miller FS7 4SJ (Part Number 120171) is a rugged, industrial grade liquid flow switch designed for high pressure applications where standard brass units fall short. This SPDT snap switch features a durable stainless steel body and wetted parts, allowing it to withstand a maximum pressure of 1000 PSI. Built with a 1 1 4" BSPT connection, it is engineered for precise flow sensing in large pipe systems across hydronic heating, industrial