It is especially suitable for the butterfly plate of large-caliber valve to be installed in the diameter direction of pipeline. In the butterfly valve body cylindrical channel, disc disc around the axis of rotation, rotation Angle between 0°~90°, rotation to 90°, the valve is fully open state. Its structure is simple, low cost, adjustable range is large.
Butterfly valve seal is rubber as the intermediary, it is far from half ball valve, ball valve, gate valve metal hard sealing performance. Half ball valve after long-term use, the seat also produces traces of wear, it will continue to be used, by adjusting the stem and packing in the process of opening and closing valve stem just rotate 90 °, there were signs of leak, compression packing gland bolts again little, packing can be realized without leakage, while the other is still the small leak valve force, big leaks in the valve.
There is a comparison of butterfly valve is three eccentric metal hard seal butterfly valve, valve body and seat for joined components, seat sealing surface layer surfacing welding temperature, corrosion resistant alloy material. Multi-layer soft stack sealing ring fixed on the valve plate, this butterfly valve compared with the traditional butterfly valve has high temperature resistance, light operation, no friction opening and closing, closing with the torque of the transmission mechanism to compensate for the sealing, improve the sealing performance of the butterfly valve and prolong the advantages of service life.

Nortech is one of the leading industrial valve manufacturers in China with quality certification ISO9001.

Major products: Butterfly Valve, Ball Valve,Gate Valve, Check Valve, Globe Vavlve,Y-Strainers, Electric Acurator , Pneumatic Acurators .