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  • 产品名称: Asphalt insulation plug valve
  • 上架时间: 2017-05-15
  • Views : 118

1. Structure and use
The asphalt insulation valve with a taper of 1: 8 of the plug-type spool structure. Cone shaft hole with tight, combined with the use of gap adjustment device, the valve opening and cut off the flexible. Access flange connection structure, to overcome the screw connection due to high temperature deformation of the shortcomings of asphalt leakage. The side of the valve body is provided with a mezzanine, and the heat transfer oil is retained and passed to ensure the flowability of the valve and the nearby asphalt.
The asphalt insulation plug series products are diameter two inches (DN50), three inches (DN80) and four inches (DN100) structure of the two links and three links of the points. Working pressure 1Mpa, operating temperature 250 ℃. Cylinder rotation seal with special packing, high temperature can still guarantee its sealing performance.
Two-way valve with cut-off function, three-way valve with cut-off and commutation function. Reliable performance, beautiful appearance, is the asphalt plant (station) pipeline asphalt flow and commutation and equipment maintenance of essential products.
2. The use of the valve logo
The opening and closing of the valve is based on the valve end of the valve engraved on the valve channel orientation of different identification.
2.1 two-way valve



Size
  Valve class


The following are the same as the "
D
The following are the same as the "
A
The following are the same as the "
B
The following are the same as the "
E
The following are the same as the "
4-d
The following are the same as the "
Ζ
OK
The way to
DN50
The following are the same as the "
110
The following are the same as the "
98
The following are the same as the "
220
The following are the same as the "
30
The following are the same as the "
14
The following are the same as the "
0.45
The way to
DN80
The following are the same as the "
150
The following are the same as the "
130
The following are the same as the "
260
The following are the same as the "
40
The following are the same as the "
18
The following are the same as the "
0.55
The way to
DN100
The following are the same as the "
170
The following are the same as the "
146
The following are the same as the "
290
The following are the same as the "
48
The following are the same as the "
18
The following are the same as the "
0.50
 




Size
Valve class
The following are the same as the "
D
The following are the same as the "
A
The following are the same as the "
B
The following are the same as the "
C
The following are the same as the "
E
The following are the same as the "
4-d
The following are the same as the "
Ζ
OK
The way to
DN50
The following are the same as the "
110
The following are the same as the "
90
The following are the same as the "
220
The following are the same as the "
110
The following are the same as the "
30
The following are the same as the "
14
The following are the same as the "
0.45
The way to
DN80
The following are the same as the "
150
The following are the same as the "
130
The following are the same as the "
260
The following are the same as the "
130
The following are the same as the "
41
The following are the same as the "
18
The following are the same as the "
0.55
The way to
DN100
The following are the same as the "
170
The following are the same as the "
150
The following are the same as the "
300
The following are the same as the "
150
The following are the same as the "
46
The following are the same as the "
18
The following are the same as the "
0.52

4. Installation and use
According to the valve through the commutation logo to connect it to the pipeline, the flange contact surface by adding asbestos rubber pad, connected to ensure reliable sealing. The heat transfer oil passage is connected with a 3/4 "pipe.
Adjust the degree of compression of the sealing filler gland, so that the asphalt will not leak. If the spool is not easy to rotate, adjust the contact with the spool screw to reduce the spool cone surface of the valve body cone contact surface pressure.
5. maintenance
Regularly check the use of the valve, such as the discovery of leakage at the filler can adjust the degree of compression of the gland. When found damaged packing should be replaced in time. Remove the gland, remove the packing, re-fill the strip on the cylindrical surface of the spool, and then install the gland press, packing can be used nylon.