Operating method for hydraulic switching valve for e.g. central heating systems has valve body moved between end positions to close outlets, and decelerated during movement for slow quiet valve closure

摘要

The valve has a housing (1) with one intake (2) and two or more outlets (3,4), with one outlet closed hydraulically by a valve body (6) when it I in its end positions. During switching of the valve, the valve body is stopped or decelerated at least once while moving between its two end positions, pref. near the end positions aimed at. During the standstill, the drive (7) acts on the valve body with a holding force. The drive has a stepping motor.