| 摘要 |
1512895 Valves BRAUKMANN ARMATUREN AG 2 June 1976 [11 June 1975] 22822/76 Heading F2V A valve member 24 separates a forward pressure chamber 3 from a back pressure chamber 4, is loaded by a spring 25 and has connections 8, 9 to a differential pressure indicating device 10. As shown the indicating device consists of a transparent tube 15 containing a spring loaded piston 19 which in use, takes up a position dependent on the magnitude of the pressure difference across the valve, a scale 36 may be provided on the tube. |
