The stem can be customized into different shapes (square or round+key)to connect the drive.

Prevent the valve stem from blowing out.

O ring is used as stem seal, which can achieve interference fit and ensure tightness.

It has the function of maintaining the position of the valve stem and can ensure the sealing between the valve stem and the valve body. And the material can be adapted to the medium.

Easy to install, simple structure, small size, light weight, economical, widely applicable.

It has zero leakage sealing and is replaceable & wear resistant. The material can be adapted to the medium. The rubber or resin valve seat is not easy to deform while its sealing is ensured. The valve seat is anti-aging and corrosion-resistant and its streamlined design makes the water flow smoother. Concentric butterfly valve with hard backrest needs to be equipped with a special flange.

It has streamlined design, small resistance, large flow. Its material can be selected according to the medium, such as vulcanized rubber or fluoroplastics.

It can transmit greater torque without pin fixing, ensure the surface of disc is smooth and more resistant to erosion and corrosion,facilitate the replacement of stem or disc, make disassembly and assembly more convenient.

The one-piece valve body has better pressure bearing capacity, and its material can be selected according to the medium.