The Maxitrol 325-7AL-1

It will close the circuit once the temperature falls below the 20-degree differential

Tank Longevity: Actively prevents rust-out and localized pitting in the steel lining

While it is designed for horizontal mounting

Cleveland Controls NS2-0505-00 Pressure Switch L99H008 The Maxitrol 325-7AL-1The Cleveland Controls NS2 0505 00 Pressure Switch is a high performance air pressure sensing switch designed for critical monitoring of positive, negative, or differential pressure in HVACR and industrial pneumatic systems. Built with a rugged, glass filled polycarbonate housing and a high stability silicone diaphragm, this V 120 air pressure switch ensures precise set point accuracy even in demanding environments. It features a manual reset