2016年8月2日星期二

What’s the difference between the V-type ball valve and eccentric hemisphere ball valve?

Is the V-type ball valve same with eccentric hemisphere ball valve? That's a lot of V-type ball valve and the V-type ball valve and eccentric hemisphere ball valve, we will detail for you on doubts.
V-type ball valve although both belong to the eccentric half ball valve series, but V-type ball valve is not that eccentric hemisphere ball valve, the difference between them is as follows:
Is the use of eccentric hemisphere ball valve eccentric ball and seat, when the valve stem rotates the self-centering in the common trajectory, the closing process more closed more tight, fully achieve a good sealing purposes. The eccentric hemisphere ball valve ball and seat completely out, eliminating the wear ring to overcome the traditional ball valve seat and the sealing surface of the ball is always the problem of wear seat metal surfaces are well protected. This product is particularly suitable for steel, aluminum, fiber, tiny solid particles, pulp, coal ash, petroleum gas and other media.
Eccentric eccentric hemisphere ball valve working principle: usually double eccentric semi-ball, that the sealing surface and the shaft center of the eccentric center, and eccentric, valve and valve seat and the valve shaft center of the flow-through center bonding surface formed about 3 degrees rotary cutting angle, it is relying on this cutting edge angle of the actuator torque force into self-locking wedge than the pressure seal, eccentric half ball Features:
1)Spherical pinch valve, easy to crystallize stammer was destroyed for crystallization, stuttering and not clean medium situation.
2)The flow path is simple, Kv value is large, good self-cleaning properties.
3)Small size, light weight.
4)Suitable for two-position control. It has a regulatory function, and open fast, lightweight, wear self-compensation, can get rid of scale on their own. For conveying precipitation, scaling, crystallization, containing impurities of two or more media.
V-type ball valves are fixed (diffrent from trunnion ball valve), also single seat seal valve, regulating valve in the best performance,which is equal percentage flow characteristic, adjustable ratio of 100: 1. With a shearing action between its V-notch and metal seat, especially for containing fibers, tiny solid particles, slurry and other media. Applicable to the regular operation, open and close quickly, lightweight, fluid resistance, simple structure, relatively small size, light weight, ease of maintenance, good sealing performance, unrestricted installation direction, the flow of media can be arbitrary, no vibration, noise .
For the V-type ball valve and eccentric hemisphere ball valve,we think eccentric hemisphere ball valve more durable, V-type ball valve adjustment better. The main difference between the V-type ball valve and eccentric hemisphere ball valve that: V-type ball valve is used in with a flow regulation and working conditions in the media as having impurity particles of fluid. Eccentric hemisphere ball valve does not have the flow regulation, but can also be used in fluid conditions have foreign particles.
Should you want to know more about ball valve from Reliable China valve manufacturer, please visit www.reliavalve.com or email us via sales@reliavalve.com.

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