Abst:Ball valves generally come in four body styles: monobloc, split, top entry, and welded. There are generally four types of ball valves: full bore, standard bore, reduced bore, and V bore.
Full bore ball valves have an oversized ball so the hole in the ball is the same size as the pipe, reducing frictional losses. The flow is not restricted, but the valve is larger.
Standard port ball valves are usually less expensive, but have a smaller ball and correspondingly smaller ports. The flow through t...
Ball valves generally come in four body styles: monobloc, split, top entry, and welded. There are generally four types of ball valves: full bore, standard bore, reduced bore, and V bore.
Full bore ball valves have an oversized ball so the hole in the ball is the same size as the pipe, reducing frictional losses. The flow is not restricted, but the valve is larger.
Standard port ball valves are usually less expensive, but have a smaller ball and correspondingly smaller ports. The flow through this valve is one pipe size smaller than the pipe size of the valve, resulting in a slightly restricted flow. In a reduced bore ball valve, the flow through the valve is one pipe size smaller than the pipe size of the valve, resulting in restricted flow.
V-port ball valves have a "V" shaped ball or a "V" shaped seat. This allows the orifice to open and close in a more controlled manner, with a more linear flow characteristic. When the valve is in the closed position and starts to open, the small end of the "v" opens first, allowing for stable flow control during this stage. Due to the higher fluid velocity, this type of design usually requires a more robust construction, which can quickly damage standard valves.
Trunnion ball valves have a mechanism that holds the ball at the top and bottom, this design is usually applied to larger and higher pressure valves
Manually operated ball valves can close quickly, so there is a risk of water hammer. Some ball valves are equipped with actuators that can be operated pneumatically or electrically (electrically). These valves can be used for on/off or flow control. Pneumatic flow control valves are also equipped with a positioner that translates the control signal into the actuator position and corresponding valve opening.
ZHEJIANG QIAI TUBING INDUSTRY CO., LTD. was established in 1996, we are the China GA-1880-Angle-Thermostatic-Radiator-Valve suppliers, our main products include: PP-R pipes and fittings, aluminum pipes and fittings, PE-RT pipes and fittings, brass fittings, water and gas valves, stainless steel corrugated flexible gas hose, stainless steel flexible water hose, and so on.
As a leading OEM GA-1880-Angle-Thermostatic-Radiator-Valve company, QIAI is based on excellent management, relying on the perfect quality system. All the productions passed by ISO9001 international quality management system, certificated by CE. We are honored to gain the license of Special Equipment Manufacturing of Gas System. We established a national Laboratory. At present, the company's product sales network has spread all over the world, establishing and improving the quality, efficient and fast professional marketing management team and service support system for the vast number of users.
