21. Earlier Monday, Russian space officials had identified a malfunctioning pressure relief valve as the source of the leak. 22. From September 1955 revised cylinder covers were introduced for renewals incorporating " bolt-on " type pressure relief valves . 23. Major advantages of the application of rupture discs compared to using pressure relief valves include leak-tightness and cost. 24. A pressure relief valve was fitted to the cylinder covers and snifting valves were fitted to the steam chests. 25. An inquest found that a pressure relief valve had malfunctioned during re-entry leading to a loss of cabin atmosphere. 26. Bivins, who authored the bill, said the appeals process is a " pressure relief valve " to address special situations. 27. In another design, a rubber housing is fitted with a pressure relief valve that determines the speed of a vehicle. 28. Near the top of the hot water heater you should find a pressure relief valve , possibly fitted with a long downspout. 29. About 15 to 20 minutes after a large amount of hot water has been used, the pressure relief valve discharges water. 30. Pressure relief valves released between 200 and 400 cubic meters ( sources vary ) of radioactive coolant water into the building.
