this SPDT pressure switch is engineered for critical applications like air flow proving with electric duct heaters

it is technically possible to leave one terminal unused if you only require a single value

PTFE (Teflon) Insulation: The PTFE coating eliminates "false positives" by preventing conductive scale or moisture from creating a bridge between the probe and the boiler shell

This single-stage controller features a single-pole

Robertshaw 5300-735 Thermostat Freon this SPDT pressure switch isThe Robertshaw 5300 735 is a heavy duty pilot duty thermostat engineered for demanding commercial cooking and HVACR applications. Operating within a 175F to 550F temperature range, this SPST (Single Pole Single Throw) snap acting control provides high limit safety and precision for equipment like industrial ovens and deep fryers. This Uni Kit model is designed for versatile field replacement, featuring a 60 inch capillary and a 3 16" x 11 5 8" nickel