| 摘要 |
1276536 Valves FISHER GOVERNOR CO 16 July 1.969 [5 Aug 1968] 35898/69 Heading F2V A gas regulator unit comprises a valve 38 co-operating with a seat 44 and actuated by a diaphragm 22 and loading spring 26 via a linkage 32 to regulate a downstream pressure at an outlet 36, and a relief monitor 16 formed by a further valve 48 which closes on to a seat 46 when the downstream pressure rises to a level which would damage appliances connected downstream, the increased pressure acting upon a diaphragm 53, via passageways 60, 62, 64, to move the valve 48 against the action of a spring 56, the increased pressure being allowed to escape to atmosphere at a safe limit via ports 28 when the diaphragm 22 is moved beyond the limit of movement of a member 27, joined to a spindle 27a which abuts a cap 18b. |
