3-Piece Ball Valve - Selecting The Right Type Of Ball Valve For Your Application
Ball valve construction offers long-lasting performance as well as low maintenance and long lasting designs. In the event you cherished this information and you want to acquire more information regarding a fantastic read generously pay a visit to the web site. It has a higher rate of operating efficiency than conventional ball valves and a smaller footprint with a high temperature range. The ball (torque) arm is made from high-quality, heavy-duty, fully welded, precision-engineered, sealed and nitrogen-inert gas ball bearing assembly. Operation: The ball (torque) arm assembly consists of a high-tension, precision-cast stainless steel housing, an oversized NPT fitting and two high-quality, precision-cast, high-temperature die cast aluminum ball bearings.
Ball Valve Construction: The ball (torque) arm of the 3-piece ball valve consists of a stainless steel sleeve, a threaded end, a lead sleeve and two new threads. This combination provides for the correct ball-bearing design, superior sealing and operation. It is also a cost-efficient option to conventional 3-piece ball valves. The high-tempered, stainless-steel ball bearings insure quick closing of the valve while the specially designed, threaded end and threads to ensure a snug fit that reduces flow loss.
Operation: A standard non-return (NPR) 3 piece ball valve assembly has an inside-frame bolt and seat. Ball bearing seat and bolt are separately installed. Ball seating creates an inside-frame bolt that is stronger than a conventional seat and bolt. This reduces valve slippage while maintaining a high-quality performance. This design features a self-cleaning seat that is supported by a two-piston sleeve that also contains a second sealing surface. The two types of ball seating allow for different valve pressures and can be matched to meet the exact specifications of individual plant applications.
Types of Ball Valve: There are several common types of ball valves including: snap-on-fit, semi-intrusive and direct lift. Snap-on-fit ball valves are self-contained and snap tightly to the end connections in order to provide an accurate seal and excellent sealing. The seat of such ball valves can either be threaded or not, depending on the application requirements. Snap-on-fit ball valves usually have the advantage of providing an easy attachment to existing connectors or to be fixed directly against an existing or newly-installed spout fitting.
Semi-intrusive ball valve designs are similar to snap-on-fit ball valves, except they require a slightly more-complicated installation process because of the need for threaded ends. The semi-intrusive ball valve has two or more threaded ends that are threaded together. A series of holes are drilled into the threaded ends to secure the ends of the ball valve in their respective spouts. The seat of such a ball valve is generally on the inside of the pipe and provides a seal similar to the sealed end of a snapped-on-fit ball valve. Semi-intrusive ball valves also have a seat that is not threaded.
Full Bore Ball Valve: A full bore ball valve refers to a type of ball valve that also includes a seat. The inner diameters of full bore ball valve seats are greater than three hundred millimeters and greater than four hundred millimeters respectively. The seat and the inner diameters of full bore ball valve seats are typically eighteen millimeters in diameter. In addition to seating, full bore ball valve designs often include a side relief plate to keep water away from the spout and the seat. A ball valve with a seat and a relief plate may be useful for limited applications where water is not a problem, but for general irrigation systems, a full bore ball valve is usually best.
All of these ball valves are available with two, three, or four pieces. The basic difference between these varieties is the size of the seat and the internal relief. One piece ball valves are commonly found in irrigation and cooling systems. The other piece ball valve design is more commonly found in domestic plumbing applications, such as kitchen and bathroom showers, toilets, and tubs and showers.
When selecting ball valves, you need to consider the application. If you need an economical design, you may prefer to choose three piece ball valves. You can also opt to go with internally threaded fittings instead of threaded end connections. The internally threaded fittings ensure better sealing and prevent surface damage to the valve. However, internally threaded fittings are less reliable than externally threaded fittings and they require more maintenance.