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valve’s primary role is used to quickly switch the fluid. Because the handle rotated ninety degrees to achieve the full effect of all relevant, it is also called “quick-opening.” Because the switch is not easy to accurately adjust the degree of control, so not suitable for flow regulation.

ball is a sphere with a circular channel to open and close parts, ball rotation to achieve with the stem of the valve opening and closing action. Valve open and close a hole in the piece is a sphere around the axis of rotation perpendicular to the channel, so as to achieve the purpose of opening and closing the channel. The main valve for opening and closing of media channels and equipment used.

valve main advantages are as follows:

for the regular operation, open and close quickly, lightweight.

1. fluid resistance.

2. structure is simple, relatively small size, light weight, ease of maintenance.

3. seal.

4. is not limited mounting direction, the flow of the medium can be any.

5. no vibration, noise.
The main drawback

valve as follows: valve structure can be classified according to: floating ball valve, fixed ball valve, ball valve and flexible seal valve; per channel can be divided into direct-to-type, angle-and three-way etc., can be divided into three-way T-shaped and L-shaped two. Work can be divided according to the connecting threaded connection, flange connection and welded three.

valve installation and maintenance should note the following:

1. to leave the position of the valve stem rotation

2. can not be used for throttling.

3. with vertical transmission of the valve should be installed.

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