1. The pressure level of plugging valve in hydraulic pressure test is chosen according to or equal to or higher than design pressure and design temperature.

2. Water pressure test plugging valves are designed, selected, manufactured, checked and checked according to relevant standards.

3. Pressure self-tightening sealing structure and bolted connection valve cover structure are adopted. The two ends of the branch pipe are welded.

4. The flat O ring seal is adopted and the valve seat is made of stainless steel surfacing.

5. Many hydraulic tests can be carried out on the plug plate when the water pressure test is carried out and the plug plate is removed after the water pressure test.

6. The plug plate seal can be adjusted by adjusting the adjusting screw at the end of the supporting plate to achieve the purpose of sealing.