this 7H Sure-Flex sleeve provides the torsional stiffness required to protect your drivetrain under load

Featuring a 57 Cv rating

this control ensures high-side and low-side stability

It operates within a control pressure range of 60 to 333 psig

Resideo QVU8143A3231 Rebuild Kit 321894-708 this 7H Sure-Flex sleeve providesWhen you are dealing with a leaking or stuck VU53 series fan coil valve, the Resideo QVU8143A3231 Rebuild Kit is the professional grade solution to restore factory performance without cutting into the piping. This OEM Honeywell Resideo repair kit is designed for 1 2 inch to 1 inch normally closed fan coil valves, providing a direct internal replacement compatible with VU52, VU53, and VU54 bodies. Built for high cycle hydronic applications, this