Engine 2014: General Subjects

1. A Reducing station relief valves must be lifted by hand at least once a watch.
2. B The cut out valve at the outlet of the reducing valve should be throttled when in operation.
3. C Reducing valves should be warmed-up and drained before they are adjusted.
4. D Reducing valves are absolutely reliable and require no routine maintenance.

Tip: press A-D to answer