Because the movement of butterfly valve plate with wiping, so most of the butterfly valve can be used with suspended solid particles of the medium, depending on the strength of the seal can also be used for powder and granular media.
Butterfly valve structure length and overall height is small, open and close fast, when fully open, with less fluid resistance, when open to about 15 to 70, but also for sensitive flow control, butterfly Valve structure principle is most suitable for the production of large-diameter valves.
Butterfly valve is recommended under the following 5 operating conditions:
1. Request throttling, regulating and controlling flow.
2. Mud Medium and solid particle-containing medium.
3. The requirement valve structure length is short occasion.
4. Require quick opening and closing speed occasion.
5. Situations with small pressure differences.
In double-position adjustment, necking channel, low noise, cavitation and gasification phenomenon, a small amount of leakage to the atmosphere, abrasive media, you can choose the butterfly valve.
When using the butterfly valve under special working conditions, such as throttling regulation or strict sealing requirement, or severe wear and tear, low temperature (deep cold) and other working conditions, the special butterfly valve with special designed metal sealing belt regulating device is required to use the special triple eccentric or double eccentric butterfly valve.
The signal butterfly valve is driven by the worm gear and worm gearing to rotate the shaft and the butterfly plate to open and close and control the flow. Rotating worm gear worm gearing hand wheel, so that the disc to open and close and adjust the flow, hand wheel clockwise direction rotation for valve closed.
Use Device
According to the electrical control requirements of the cable core wire to the corresponding terminal, and sealed the cable inlet, at the same time the cable fixed to prevent external traction damage cable wiring. When the valve is in the “full off” position, turn the CAM below clockwise or the open cam above counterclockwise. When the butterfly valve is clamped, pay attention to whether the connecting force is even and reliable. After the butterfly valve is installed, the valve plate must be in the open position during the pipeline strength test. Butterfly valve installation should be regular inspection, its inspection of the main items as follows: butterfly valve seat and o-ring whether damage. Sealing performance of valve plate sealing surface. After the butterfly valve is repaired and assembled, there shall be no blockage during the opening and closing rotation. The butterfly valve repair assembly should carry on the sealing performance test according to the request.
Post time: Jul-28-2021