This packer is mainly used for oil/gas well cementing operation for all kinds of down hole isolation, improving the quality of well cementing.

Inflatable element varies with size of hole and downhole differential pressure automatically.

Valve system can make ECP (External Casing Packer) set in the perfect position safely.

*Basic structure

1. Casing collar 2.Mandrel 3. Rubber element

4.Valve collar 5.Inflated limit valve 6.Check valve

7.Optional locking shut-off valve 8.Break-off rod 9.Casing nipple