The 400 series unbalanced shut-off valve adopts a top guided, pressure unbalanced single seat valve core structure, suitable for situations with small pressure differences. Hard alloy overlay welding is carried out on the surface of the valve core and valve seat to ensure the safety of the valve

The long-term operation of the door is stable. For the cutting off of high medium temperature and large pressure difference conditions, we have specially designed a dual core pressure relief cut-off valve for this purpose.

This type of valve trim adopts a dual valve core structure and a flow off design. When the valve is opened, the small valve core is opened first. The small valve core has a small force area, so the opening effect is small. After the small valve core is opened

After the pressure is released, the pressure difference on the large thin core is greatly reduced, and the large reading core can be opened with a smaller actuator force. This type of structure can be very effective in reading content

To meet the cutting requirements of high pressure differential situations.