UMGEHUNGSVENTIL FÜR WÄRMETAUSCHER

摘要

A valve including a housing defining first and second bores and a peripheral valve seat. An actuator in the first bore has a reciprocating seal for engaging the valve seat. A coiled return spring urges the reciprocating seal towards the chamber to open the valve, the return spring having a first end connected to the reciprocating seal and a second end engaging a spring support in the housing facing the first bore. In at least one embodiment, the return spring has a larger diameter at its second end than its first end.