Ball valves are a Quarter Turn Shut Off valves available in Brass, Bronze, Lead-Free Brass, Cast Iron and Stainless steel Material. The ball valve is a shut-off valve that controls the flow of a liquid or gas by means of a rotary ball having a bore. By rotating the ball a quarter-turn or 90 degrees around its axis, the medium can flow through or is blocked. They are characterized by long service life and provide a reliable sealing over the life span, even when the valve is not in use for a long time. As a result of which they are more popular as a shut-off valve than the gate valve. Moreover, they are resistant to contaminated media than most other types of valves. In special versions, ball valves are also used as a control valve. This application is less common due to the relatively limited accuracy of controlling the flow rate in comparison with other types of control valves. However there are some additional advantages here from the ball valve-like, the valve still ensures a reliable sealing, even in the case of dirty media.
The ball valve may have two, three or even four ports. The vast majority of ball valves are 2-way and are manually operated with a lever. The lever is in line with a pipe when the valve is opened and the handle is perpendicular to the pipe when in the closed position. Manually operated ball valves can be quickly closed and therefore there is a risk of water hammer with fast-flowing media. Some ball valves are also fitted with a transmission. The 3-way valves have an L-shaped or T-shaped bore as a result of which various circuit functions can be achieved such as disturbing or mixing flows.
The most common housing materials for ball valves are bronze, brass, cast iron, and ductile iron. The ball is generally made of chrome-plated steel, chrome-plated brass, stainless steel or PVC. For the seats, mainly Teflon or also synthetic materials or metals are used. Brass valves have the largest market share. It is an alloy of copper and zinc and has good mechanical properties. These valves are used for (drinking) water, gas, oil, air, and many other media. Chloride solutions (e.g. seawater) or demineralized water may cause dezincification. Dezincification is a form of corrosion where which zinc is removed from the alloy. This creates a porous structure with a greatly decreased mechanical strength.
Types of Ball Valves available are 1Pce, 2 Pce, 3 Pce and are also available in Full Port or Reduced Port. A typical application would be Commercial, industrial and residential applications