Fire regulating pneumatic valve pneumatic valve body joint leakage

fire regulating pneumatic valve pneumatic valve body surface leakage? Installed in the central air conditioning duct system, work principle is the use of pneumatic valves are installed on the metal temperature control easily, use the effect of gravity and spring mechanism, when the fire broke out, the flame invasion of duct, high-temperature fusible alloy melted on pneumatic valves, or makes a memory alloy to produce deformation of pneumatic valve shut down automatically, used for air duct and fire partition throughout the occasion.
general fire prevention regulating pneumatic valve installed in the duct through the firewall, and structure deformation joints plays a role of fire control, you can set the output electric signal, temperature exceeds ℃ ℃ or pneumatic valve closed, linkage to send ( Fan shut down.
combining surface leakage of pneumatic valve and pneumatic valve body surface leakage refers to the combination between up and down pneumatic valve body surface leakage phenomenon, the main causes of the leakage has the following several aspects:
it is enough or partial, in combination with the bolt force caused by combining face seal is not good. Elimination method is to adjust the bolt tightening force, when the bolt must hold tight the diagonal manner, it is best to tight while measuring clearance, everywhere to bolt tight tight so far, and make the joint gap is consistent throughout.
2 it is pneumatic valve body combined with the tooth gasket is not in conformity with the standards. For example, tooth-type gasket radial slightly trench, parallelism is poor, defects such as tooth tip or a slope would cause the seal failure. Which will make the combination pneumatic valve body surface leakage. Good during the maintenance spare parts quality, adopt standard tooth gasket can avoid the occurrence of this phenomenon. Three is a pneumatic valve body (
Fire pneumatic valve joint surface flatness bad or be hard impurities pad seal failure. Joint surface flatness of the pneumatic valve body is caused by the pneumatic valve body combined with the surface of the leakage, to eliminate the method is to combine disintegration of pneumatic valve to grinding surface until it meets quality standards. Caused by impurities mat live seal failure, in the pneumatic valve assembly carefully avoid impurities into the clean surface.