Tightness tester

The utility model discloses a tightness tester aims at providing one kind and can carry out the both ends shutoff that the pipe connections section was moulded to the steel fast effectively, and the shutoff operation links up high -efficiently, and the leakproofness of shutoff end is good, and the testing process is stable, can ensure the device that the testing result accuracy is high. It includes the subbottom bedplate, the top base board, the air pump, the baroceptor, be equipped with the master cylinder on the top base board, the alignment jig is connected to the piston rod of master cylinder, be equipped with adjust the cylinder on the alignment jig, the sealing, the sealing includes two big rings, two annulets, encircle the seal groove greatly, be equipped with big sealing washer in the annulet seal groove respectively, little sealing washer, adjust the cylinder's piston rod is connected one and is adjusted the post, it is equipped with a regulation section of thick bamboo to adjust the post overcoat, a position lower big ring, a position higher annulet is connected with a regulation section of thick bamboo, the lower annulet in position with adjust the support connnection, be equipped with the air flue on the regulation post, be equipped with the gas pocket with the air flue intercommunication on the regulation section of thick bamboo, air flue and air pump connected.