| 摘要 |
<p>1,151,146. Valves. M. H. GROVE. 7 April, 1967 [8 April, 1966], No. 16089/67. Heading F2V. [Also in Division G1] A valve for diverting fluid into a meter prover duct 58 (see Division G1) comprises a stator provided on one side with ducts 1-4 leading to orifices 21 which are selectively connectible with orifices 44 in a rotor which has a diametric partition 46 to provide for reversal of flow through duct 58 by movement of the rotor through 90 degrees. Each orifice 21 is provided with a spring-loaded sealing-ring 38 which is also urged into contact with the rotor by upstream pressure.</p> |
