41. _Install an additional check valve near the water treatment plant in Bellingham; the rupture occurred near the treatment plant. 42. The ball excludes dirt and functions as a check valve to prevent grease escaping back out of the fitting. 43. The reactor cavity can handle overpressure of 0.18 MPa and is vented via check valves to the leaktight compartment. 44. In aircraft and aerospace, check valves are used where high vibration, large temperature extremes and corrosive fluids are present. 45. The modifications involved replacement of a check valve filter assembly in the booster which was found to have broken. 46. The check valve , which supports the ducts, held in place during today's flight, resulting in only a slow leak. 47. Along the fuel line, a check valve keeps the fuel from running back to the tank between combustion strokes. 48. Unlike Bubble Wrap, inflatable air cushions have a check valve to allow the cushion to be inflated or sometimes deflated. 49. Boeing said the cabin lost pressure when an air-duct clamp disconnected and led to the failure of a check valve . 50. The flooding was fixed in the 1950s with the installation of check valves , and a concrete slab floor was installed.
