1, structure length short, its structure length only the traditional flange check valve 1/4 to 1/8

2, small volume, light weight, and its weight only the traditional flange check valve 1/4 to 1/20

3, close the valve flap of fast, water hammer pressure small

4, horizontal or vertical pipe all can use, convenient installation

5, port unobstructed, fluid resistance small

6, action quick, sealed performance is good

7, the structure compact, simple, beautiful appearance