This sub-master air velocity controller features a universal design

The Parker CV5P-8FS-8FS ensures unidirectional flow for HVAC backflow prevention in both residential and light commercial systems

Industrial Durability: Rated for a minimum of 100

the internal disc is likely defective and requires replacement

the relay contacts are rated to switch loads from 120VAC up to 600VAC

McDonnell & Miller FS7-4J Switch Els PW 29614 This sub-master air velocity controllerThe McDonnell & Miller FS7 4J (Part Number 120060) is a heavy duty industrial liquid flow switch designed for high demand applications including secondary filtration, hydronic heating, and process cooling. This model features a 1 1 4" BSPT connection and is equipped with a single pole, double throw (SPDT) snap switch, allowing for simultaneous make and break circuit control. Built for durability, it utilizes brass construction and a magnetic switching