The difference between one piece two piece three piece ball valves
The difference between one piece two piece three piece ball valves
This represents the form classification of the ball valve body, that is, the form classification of the body. One piece refers to a one-piece valve body, commonly used for small-sized valves. Fully welded ball valves, also known as one-piece ball valves, can have large diameter pages; Two piece valve refers to a valve with a valve body divided into two parts (also known as a two-stage valve) and a double-sided interlocking design; Three piece refers to a valve body composed of three parts (also known as three-stage), usually used for forged valves with larger diameters and higher pressures.The main Ball valve product names of China Ball valve Network include:High Temperature Integrated Ball Valve，Insulation Pneumatic Cut Off Ball Valve，Internal And External Teeth Brass Ball Valve (Butterfly Handle Type)，Internal And External Teeth Brass Ball Valve，L-type, T-type Pneumatic Three-way Ball Valve，Lined Fluorine Discharge Stuff Ball Valve
One piece ball valves also include wide ball valves, which work by rotating the valve core to make the valve unobstructed or blocked. Ball valve switches are lightweight, small in size, reliable in sealing, simple in structure, and the sealing surface and spherical surface are often in a closed state, which is not easily eroded by the medium. They are suitable for various small-diameter pipelines, such as the front end of a water tap or the inlet and outlet of a gas meter in the home, and are widely used.
The structural characteristics of the track ball valve in two-piece ball valves are: 1. frictionless opening and closing. This function completely solves the problem of traditional valves affecting sealing due to friction between sealing surfaces. 2. Top mounted structure. Valves installed on pipelines can be directly inspected and repaired online, which can effectively reduce equipment downtime and lower costs. 3. Single seat design. Eliminating the issue of abnormal pressure rise in the valve chamber medium affecting safety during use. 4. Low torque design. The valve stem with a special structural design can be easily opened and closed with just a small handle. 5. Wedge shaped sealing structure. Valves rely on the mechanical force provided by the valve stem to press the ball wedge onto the valve seat for sealing, ensuring that the sealing performance of the valve is not affected by changes in pipeline pressure difference, and reliable sealing performance is guaranteed under various working conditions. 6. Self cleaning structure of sealing surface. When the sphere tilts away from the valve seat, the fluid in the pipeline passes uniformly along the sealing surface of the sphere at a 360 ° angle, which not only eliminates the local scouring of the valve seat by high-speed fluid, but also washes away the accumulated substances on the sealing surface, achieving the purpose of self-cleaning.
Three piece ball valves have the following advantages: 1. Low fluid resistance, with a resistance coefficient equal to that of a pipe section of the same length. 2. Tight and reliable, currently the sealing surface material of ball valves widely uses PTFE, which has good sealing performance and has also been widely used in vacuum systems. 3. Easy to operate, quick opening and closing, only need to rotate 90 ° from fully open to fully closed, matched with pneumatic or electric climate control for remote control. 4. Easy maintenance, simple ball valve structure, and generally movable sealing rings make disassembly and replacement relatively convenient. When fully open or fully closed, the sealing surfaces of the ball and valve seat are isolated from the medium, and when the medium passes through, it will not cause erosion of the valve sealing surface. 6. It has a wide range of applications, with diameters ranging from a few millimeters to several meters, and can be used from high vacuum to high pressure.
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