The characteristics of the air valve: Multiblade wind valve and the vent pipe size regulate the rectangular duct; air valve leaves open the split rolls, ventilation, air conditioning and air purification system as a control valve; by testing, air tightness of the air valve, the relative amount of air leakage in 5%, good regulating performance.
The structure of the air valve shall be firm, flexible, accurate and reliable, and shall indicate the opening and closing direction of the air valve and the angle of adjustment。
As the name implies, namely air valve, air flow control valve, air valve is the central air conditioning terminal fittings ventilation and air conditioning and air purification of civil building engineering in an industrial plant, commonly used in air conditioning, ventilation pipe system, used to adjust the tube of the air flow, can also be used for mixing of fresh air and return air conditioning.
The butterfly valve plate than the short diameter specification shall not be less than 3mm, a square round one end of the valve shaft and the top car file, round thread head, the other end is made of flat. Handle with the flat of hydrocarbon S shaped drill, attention direction.
The stopper plate to release two curved legs, simmer 90 degrees, then smooth long groove. When assembling, the shim plate is fixed on the short tube, then the sleeve is in the short pipe, and the valve plate is tightened with a bolt, and finally the handle is installed. The valve plate and the clearance of the shell should be uniform and should not be touched and rubbed. After the test is flexible, mark the direction of opening and closing. The chain of the zipper butterfly valve shall be arranged according to its position and height.
Plug valve (including inclined plate valve) shell should be tight, the shell wall should be anti-corrosion treatment. The flashboard shall be flat, and the top and bottom two blocks of the ram plate shall be of the same specifications as the backing plate. Oblique plate valve of the upper and lower two block plate opening to stagger each other, but the screw must be right.
When the boring plate is opened, the inclined flashboard valve is set at 45 degrees, and the shape is elliptical. First, the two block plate is welded to the end of the pipe, and check whether the pipe is in a straight line. When assembling, place the two shim plates in the middle and put them into the flashboard valve and tighten the bolts. The opening and closing shall be flexible, and the reliable inserting plate fixing device shall be adopted.
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