Regulating valve for hydraulic door closer has anti-rotation lock on body formed by groove on thread and holding elastic element to eliminate play

摘要

the regulating valve (1)which fits into an internally threaded bore has a body (4) with thread (7), regulating area (5) and an anti-rotation lock with groove (6a) mounted on the thread to hold an elastic element (6b) which fits with positive, force-locking or materially bonded engagement. The elastic element is a plastics moulded part or plastics thread. The body and /or the regulating region are made from fibre-reinforced plastics. Independent claim describes door closer with regulating valve.