31. A pressure relief valve prevents a dangerous build-up of pressure when the hydraulic cylinder's piston reaches the end of its stroke. 32. Or maybe I could use a metal bomb ( which are still expensive ) with a 2.5 bar pressure relief valve ? 33. The hot water temperature can be regulated by setting the temperature-pressure relief valve on the hot water heater to 140 degrees. 34. The cylinder covers of engines built early in the programme of construction were fitted with " screw-in " type pressure relief valves . 35. Safety codes make this a rare occurrence at the cost of higher weight and additional safety features such as pressure relief valves . 36. Note, however, that pressure relief valves are normally designed to fail in the " stuck open " position, not " stuck closed ". 37. It's a boiler, but only produces hot water and not steam, there's a functioning pressure relief valve and a thermostat to prevent explosions. 38. Also on the top is a pressure relief valve that is usually identified by a circular ring ( like a key ring ). 39. Use of the demand valve resuscitator in Europe was limited by the lack of pressure relief valve or audible alarm for high pressure. 40. Or can the pressure relief valve fail in an " always shut " position, allowing pressure to build up to a dangerous level?
