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All-weather atmos valve LTHF-2 type
First, introduction
All-weather atmos valve is the valve seats interlay gravity type structure. The features of it are the valve plates and valve seats are connected with air mattress. The gas density is great and it is not easy to be frozen and it can be used in the cold area.
All-weather atmos valve is a kind of key equipments which can be used in the installation of crude oil, petroleum and so on. It can prevent of the damage caused by super pressure and vacuum condition. It has great amount of ventilation, great sealed performance, and small amount of linkage and corrosion resistance.
Second, structure and work theory
The valve seat is made up of support and fluoride film. The support is made from 1Cr18Ni9Ti alloy steel plates. It is slightly actuation and there are ring type flutes. The valve seat is made up of PTFE. The valve weight is determined according to the permit pressure and it can be regulated.
|
DN
|
25
|
32
|
40
|
50
|
80
|
100
|
150
|
200
|
250
|
300
|
|
L
|
240
|
260
|
290
|
290
|
420
|
420
|
535
|
700
|
835
|
950
|
|
H
|
270
|
290
|
320
|
320
|
470
|
470
|
540
|
620
|
700
|
780
|
