| 摘要 |
A roll over and/or pressure/ vacuum relief valve 10 is tested using a kit 150 consisting of a valve outlet adaptor 152, a conduit 156, a test unit 160 and a pressure/vacuum measuring device. An actuation device 100 may also be used if the valve is to be left in place. The actuation device comprising a valve body engagement member 102 and a rollover gravity element engagement part 104, alternatively the rollover valve can be actuated by hand. When testing, the adaptor is connected to the valve outlet, a conduit then connects the adaptor to a test unit which alternatively pressurises the outlet to test the vacuum relief function 32 and evacuates the outlet to test the pressure relief valve function 22, and subsequently the effectiveness of the rollover valve 60, 62. Also described is a weather protection cap for fitment to the pressure/vacuum relief valve.
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