Ball Valves

According to sealing structure, ball valve can be classified into floating ball valve and trunnion ball valve. Floating ball valve mainly utilizes the fluid pressure to press the ball on the seat, forming floating seal. For that, the pressure and size are limited. The ball of the trunnion type is fixed and sustained by upper bearing and lower bearing which are installed on valve body. Sealing is realized when spring and fluid pressure push the valve seat to the ball. So the torque of trunnion ball valve is smaller than floating ball valve and can be applies to high pressure and large size. Common straight through ball valve is widely used to cut off fluid. It should not be used to control flow which may cause seal ring erosion. Three way ball valve and four way ball valve are utilize to change the direction of the fluid. Xinhai Ball Valves, API 608, API 6D, BS 5351, forged, cast steel, floating, trunnion, metal to metal seat, side entry, top entry, full welded. 1/2 - 48 inch.
 12 Next 
NO.2013 Valves catalog download
View and download valve product literature, sales brochures and more.
read more >>
News & Events
2016.08.16
Usage of Valve Standards in China
Valve products have been widely applied in petroleum, chemical engineering, nuclear power, metallurgy, electric power, hydraulic power, large coal chemical industry and other industries. Total quantit...
2016.08.04
Innovation, the Future Trend for Pneumatic Control Valve
Pneumatic control valve plays a vital role in automatic control system of modern factory. The competition is quite intense in pneumatic valve industry in China. The future development trend of pneumat...
2016.07.28
Xinhai Valve Will Attend Valve World Expo 2016, 3A27
Event: Valve World Expo 2016 (10th Binennial Valve World Conference and Exhibition) Xinhai Valve Booth No.: 3A27 Date: November 29-December 1, 2016 Venue: Messe Düsseldorf, Stockumer Kirchstrasse...
2016.07.20
Primary Development Directions of Chinese Valve Industry
China is a valve manufacturing power. Promoted by industrialization, urbanization, reformation and globalization, Chinese valve industry still has a wide prospect. In the future, high-end, localizatio...