Stainless steel three-way ball valve overview
Stainless steel three-way ball valve closing piece is a ball, the ball around the centerline of the valve body for rotation to achieve open, close a valve. Stainless steel three-way ball valve structure features: 1, open and close without friction: completely solve the traditional sealing surface due to the friction between the sealing problem; 2, the body structure: installed on the pipe valve can be directly online check And maintenance, can effectively reduce the device parking, reduce costs. This type of valve in the pipeline should be generally horizontal installation; 3, single seat design. Elimination of the valve chamber medium due to abnormal pressure and affect the use of safety issues; 4, low torque design. Special structure design of the valve stem, just with a small handle valve can easily open and close; 5, wedge seal structure. Valve is provided by the mechanical force of the valve stem, the ball wedge pressed to the seat on the seal, so that the valve seal from the impact of pressure changes in the pipeline under various conditions, the sealing performance has a reliable guarantee; 6, Sealing surface of the self-cleaning structure. When the ball is away from the valve seat, the fluid in the pipeline passes through the sealing surface of the ball evenly, which not only eliminates the local erosion of the valve seat by the high-speed fluid, but also rushes away the accumulations on the sealing surface to achieve the purpose of self-cleaning . Stainless steel three-way ball valve has the following advantages: 1. The fluid resistance is small, the resistance coefficient is the same with the length of the pipe section; 2. Simple structure, small size, light weight; 3. Tight and reliable ball valve sealing surface material widely used plastic, Good sealing, and has been widely used in the vacuum system; 4. Easy to operate, quick opening and closing, as long as the rotation 90 ° from full open to full close, easy to control; 5. Easy maintenance, ball valve structure is simple, Generally are activities, demolition and replacement are more convenient; 6. In the fully open or fully closed, the sealing surface of the ball and the valve seat and media isolation, the media will not cause erosion of the valve sealing surface; 7. The scope of application Wide, diameter from a few millimeters, up to a few meters, from high vacuum to high pressure can be applied. Stainless steel three-way ball valve installation and maintenance should note the following: 1. To leave the valve handle rotation position; 2. Can not be used for throttling; 3 Ball valve with transmission mechanism should be upright installation. Three-way ball valve stainless steel works: the valve is rotated by the love to make the valve unblocked or blocked. Ball valve switch is light, small size, can be made of large diameter, reliable sealing, simple structure, easy maintenance, sealing surface and the spherical surface is often closed, easy to be media erosion, widely used in various industries. First, the opening process: A, in the closed position, the sphere by the valve stem mechanical pressure, squeezed on the valve seat; B, when the counterclockwise rotation of the hand wheel, the valve stem is reverse movement, the bottom of the angular plane The ball off the valve seat; C, the stem continues to ascend, and the guide pin with the spiral groove of the stem interaction, the ball began to rotate frictionless; D, until it reaches the fully open position, the stem lifted to the limit position, Turn to the fully open position. Second, the closing process: A, turn off the hand wheel clockwise, the stem begins to drop and the ball leaves the seat began to rotate; B, continue to rotate the hand wheel, the stem by the guide groove embedded in the spiral groove The role of the valve stem and the ball while rotating 90 °; C, about to close, the ball has been in contact with the seat without rotation 90 °; D, the last few turns of the hand wheel, the valve stem at the bottom of the plane The wedge mechanically presses the ball so that it is tightly pressed against the seat to achieve a complete seal.
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