High-Pressure Performance: Rated for a maximum working pressure of 680 psig and an MOPD of 550 psig

the 4290-001 Robertshaw thermostat operates on a snap-action principle

The 3-pole contactor configuration provides simultaneous disconnection of all power legs

A proof-of-closure actuator provides confirmation that the valve has reached its fully closed position

Robust Build: Plated metal housing and a high-cycle silicone diaphragm withstand temperatures from -40°F to 180°F

Armstrong Fluid Technology 272005-003 Air Vent R-410A High-Pressure Performance: Rated for aThe Armstrong Fluid Technology 272005 003 Air Vent, specifically known as the #75 Air Vent, is a high performance automatic air vent designed for efficient air removal in hydronic heating systems. Engineered to handle high pressure environments, this commercial air vent features a robust 1 2" NPT connection, making it an ideal choice for large scale boiler systems and piping networks. By continuously purging trapped air, the Armstrong 272005 003