USV

USV-I / USV-M

USV valves are designed for manual hydronic balancing of heating and cooling systems.

USV-I (red knob) is used together with USV-M to limit the flow in heating or cooling installation or can work separately as manual balancing valves for flow limitation. If certain pipe sectors do not require a control of differental pressure, USV-I and USV-M can be used as shut-off and measuring valve.

USV-M (blue knob) valve can be upgraded into an automatic USV-PV balancing valve. USV-M is designed for installation in the return pipe.

Upgrading from manual to automatic balancingis done by mounting PV-controller to an USV-M valve.

System does not need to be depressurized during the upgrade and the k_V-values does notchange. USV-PV maintains constant differential pressure across a riser.

Due to it's special design USV-PV has a firm connection between diaphragm housing and valve cone. Diaphragm controller thus acts only against the force of reference spring.