41. This often means that the relief valve will not re-seat once the set pressure is reached. 42. One would need an " adjustable " pressure relief valve to ensure this did not happen. 43. The relief valve can be internal or external. 44. Castro has used immigration as a relief valve to lessen the pressure he has in Cuba. 45. Testing is also performed to evaluate a company s ability to properly repair pressure relief valves . 46. Q . I installed a water heater recently, and not too long afterwards the pressure-relief valve leaked. 47. The pentagonal hole in the pressure relief valve is designed as a vent, not a key socket. 48. However, you could also put a pressure relief valve in instead of a hole or loose top. 49. Allen said the deal also includes " relief valves " should the airline become dissatisfied with Boeing. 50. As the nitrogen pressure drifts with the temperature so does the set point of the relief valve .
