Wide Range of Uses Water shut off airbag also known as closed water airbag, rubber inflatable pipe plug, mainly used for drainage, sewage pipe repair, closed water test, it can quickly block the flow of water, it is an ideal tool for temporary water blocking in underground pipeline maintenance. Suitable for a variety of occasions, often used in water conservancy projects, highway Bridges, construction sites, closed water experiments and other scenes. Good Water Blocking Effect Made of natural rubber, expanded by inflating, when air pressure in it meets the specified requirements, the water shut off airbag fills the entire pipeline to achieve the purpose of water blocking without leakage, especially suitable for the water closing test, leak point search, pipeline maintenance temporary water blocking and other maintenance test work, is a good helper for pipeline construction or engineering repair. Easy to Use Just put the rubber test ball pipe plug into the suitable size of the pipe, inflate it to expand to fit the pipe wall. Double handle solid pull ring design, convenient to use. Material Size Made of natural rubber, high wear resistance, strong air tightness, good elasticity, reuseable. This plumbing balloon plug is engraved with size number represents the diameter in mm. As big as the pipe, choose the same diameter of the air bag. Note 1. The maximum air pressure is 0.015MPA, can not be used over pressure, just plug up the water. 2. The pipe must be cleaned, the surface is smooth and without burrs, otherwise it will affect the sealing effect and even break the air bag; 3. The blocking air bag must be selected as the right model, and cannot be replaced by a small one. 4. Try to avoid using air bags at pipe joints. 5. The air bag should be stored in a cool and dry place when not in use, and can not be exposed to the sun.