| 摘要 |
A pressure regulating valve assembly has a first valve (11, 12) arranged to deliver to an outlet (14) a desired constant delivery pressure from a higher inlet pressure at an inlet (15), and a second valve (33) arranged to relieve pressure downstream of the first valve if this pressure should exceed the said desired delivery pressure by a predetermined amount. The two valves are biassed by a common spring (22). In a second embodiment, Fig. 2, (not shown), the two valves are arranged coaxially and one valve (124) carries the seat (144) for the other valve (138). <IMAGE> |
