1. Small volume, light weight, compact structure, easy maintenance.
2. The valve plate adopts dual type, in the spring under the elastic moment of quick closing on its own. ~
3. Because of the quick closing effect, can prevent the backflow medium, eliminate water hammer effect is strong.
4. The body structure of small length, good rigidity, safe and reliable.
5. Completely sealed, water pressure test leak is zero.
6. Easy installation, can be used for horizontal two vertical direction installation.
7. Flange connection size comply with the provisions of GB/T 17241.6-98.
8. Structure length comply with GB /T1 2221 -89, ISO5752-89.