Serieforbindelse af to ventiler til to beholdere med flydende gas.

摘要

A valve comprising a flow passage having first and second valve elements (A, B), the first valve element (A) being engageable with the second valve element (B) during opening displacement of the first valve element (A), thereby to displace the second valve element (B) to an open position. The use of two valve elements (A, B) provides improved sealing over an extended period.