Armstrong Fluid Technology 571110LF-343 Valve 320819-301 or differential air pressure in

or differential air pressure in demanding environments

Failure is often due to moisture ingress or physical damage to the 20-foot cable

and Luxaire gas furnaces that require a

Common Questions What is the difference between this and an automatic reset LWCO

such as rooftop units

Armstrong Fluid Technology 571110LF-343 Valve 320819-301 or differential air pressure inThe Armstrong Fluid Technology 571110LF 343 is a high performance 1 1 4" NPT Circuit Balancing Valve designed to ensure precision flow regulation within hydronic systems. Specifically engineered for HVAC and plumbing applications, this brass body valve features EPDM elastomers and a multi turn Y pattern globe style design that significantly reduces flow turbulence while maintaining an accuracy of + 5%. With a robust 300 psi maximum working pressure