BSPT NPT Two piece screw thread ball valve

Introduce:

• The closing part of the internal thread two-piece ball valve is a ball, and the ball rotates around the center line of the valve body to achieve the opening and closing of a valve. Ball valves are mainly used to cut off, distribute and change the flow direction of the medium in the pipeline

Specifications:

• Nominal pressure:PN1.6.2.5,4.0.6.4MPa

• Strength testing pressure:PT2.4.3.8.6.0.9.6MPaLow pressure seal test pressure:0.6MPa

• Applicable media:Q11F-(16-64)C Water. Oil. Gas

• Applicable temperature:-29~180℃

• Applicable media:Q11F-(16-64)P Nitric acidQ11F-(16-64)R Acetic acid

Advantage:

Ball valves are mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. Ball valve is a new type of valve that has been widely used in recent years, and it has the following advantages:

• The fluid resistance is small, and its resistance coefficient is equal to that of the pipe segment of the same length.

• Simple structure, small size, light weight.

• Tight and reliable, the sealing surface material of the ball valve is widely used in plastic, good sealing, and has been widely used in vacuum systems.

• Easy to operate, open and close quickly, from full open to full close as long as the rotation of 90 degrees, easy to remote control.

• Easy maintenance, ball valve structure is simple, the sealing ring is generally active, disassembly and replacement are more convenient.

• When fully open or fully closed, the sealing surface of the ball and the seat is isolated from the medium, and the medium will not cause erosion of the valve sealing surface when it passes through.

• Wide range of application, small diameter to a few millimeters, large to a few meters, from high vacuum to high pressure can be applied. When the ball is rotated 90 degrees, the inlet and outlet should all be spherical, thus cutting off the flow.

Working principle:

• Start the process

1. In the closed position, the ball is pressed against the seat by the mechanical pressure of the valve stem.

2. When the handwheel is turned counterclockwise, the valve stem moves in reverse, and its bottom angular plane makes the ball free from the seat.

3. The valve stem continues to lift and interact with the guide pin in the spiral groove of the valve stem so that the ball begins to rotate without friction.

4. Until it reaches the full open position, the valve stem is raised to the limit position, and the ball is rotated to the full open position.

•  Closing process

1. When closing, turn the handwheel clockwise, the stem begins to drop and the ball starts to rotate away from the seat.

2. Continue to rotate the handwheel, the valve stem is subjected to the action of the guide pin embedded in its upper spiral groove, so that the valve stem and the ball rotate 90° at the same time.

3. When close, the ball has rotated 90° without contact with the seat.

4. In the last few turns of the hand wheel rotation, the angular plane at the bottom of the valve stem is mechanically wedged to compress the ball, so that it is tightly pressed against the seat to achieve complete seal.

The two-piece ball valve can be divided into straight-through, three-way and right-angle types according to its channel position. The latter two ball valves are used to distribute the medium and change the flow direction of the medium. Two-piece ball valve installation and maintenance should pay attention to the following matters:

1. Leave the position for the valve handle to rotate.

2. Can not be used as throttling.

3 Ball valves with transmission mechanisms should be installed upright.

• The working principle of the two-piece ball valve is to rotate the valve to make the valve open or blocked. Ball valve switch light, small size, can be made into a large caliber, reliable sealing, simple structure, easy maintenance, sealing surface and sphere are often in a closed state, not easy to be washed by the medium, in various industries have been widely used.

• The two-piece ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline.

Materials of main parts (Medium):

Drawings (Medium):

Main outer size (Medium):

 

Drawings (Heavy):

Main outer size (Heavy):

About Delivery

About Application