Preparation: Assemble the parts of the municipal engineering sealing air bag inflator and check the tool leakage. Municipal pipe water blocking air bag Water sealing Customized strength high sealing effect Use the air pump to inflate the air bag, the air pressure should not exceed 0.015MAP, check whether the air bag leakage. Open the pipe opening, place the filling bag slowly inside the desired position from the mouth, and then inflate the water blocking bag to the appropriate pressure。

(1) There are joints in the inner wall, affecting the tightness of water plugging.

(2) So as not to expand the water blocking air bag to one side, the air pressure can not go up, if continue to inflate, the water blocking air bag will be broken.

(3) For municipal drainage pipes, the sand is required to be clean, the inner wall is smooth, and no burrs are allowed, otherwise it will affect the sealing of water plugging and even puncture.

(4) Various specifications of water plugging airbags must be used in the corresponding pipeline, and can not be small instead of large.