The DR 15 pressure differential pressure valve has a proportional control characteristic, opening with rising differential pressure. It is suitable for installation in circulated pumped radiator circuits equipped with radiator thermostatic valves. Used with hot water systems.
Design: flow regulation with cap for concealed setting. At a given setting (number of turns “n”) of the valve spindle and a given differential pressure, a given amount of water flows through the valve. If the differential pressure rises, e.g. when one or more radiators are shut off, the throughflow rate increases, relieving the pump pressure on the remaining valves.
Two pressure ranges available: 0-2.9 PSI and 08.7 PSI.