LSM wheel paddle tube pipeline quick pig seal closure

   It has the function of safety interlocking. When the Quick Opening Closure closed, the safety interlocking can realize positioning. When the Quick Opening Closure opens, the safety interlocking can realize secondary pressure relief.

   Protect sealing ring. Taking coaxial double structure, Between the sealing ring and sealing surface without relative rotation. the sealing ring is not easy to damage. the sealing surface  is not easy wear by impurities.

   Lcoking Takes multisurface structure. when locking  can realize the action, translational contacts and  uniform strength. meanwhile, Increasing the occlusal contact areas.The cover and  base of blind-plate  osslusal contact areas  90% larger than contact  size.