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Teflon lined diaphragm valve

Products > Anticorrosive valve > Teflon lined diaphragm valve

Teflon lined diaphragm valve

Model: G49J
diameter range: DN20-400mm
Temperature: ≤85 ℃, ≤250 ℃
Medium: corrosive
Design and manufacturing: GB122239
Length of the structure: GB12221, JB1688
Flange dimensions: GB4216, JB78
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Three-way diaphragm valve uses
 three-way diaphragm valve purposes: This valve is designed to control non-corrosive or generally corrosive media, the body cavity surface without lining or covered with a variety of rubber to choose from, suitable for different operating temperatures and fluid pipe road. 
 
 Three-way diaphragm valve test
 lining: Spark 
 testing and inspection according to GB / T13297 standard 
 Nominal pressure: PN (Mpa) 
 Body: PN × 1.5 
 Seal: PN × 1.1 
 
 Three-way diaphragm
 valve Diaphragm valve is a special form Of the globe valve; 
 1, the elastic seal of the opening and closing pieces to ensure that no internal leakage; 
 2, streamlined flow channel, making the pressure loss is small; 
 3, there is no stuffing box, so there is no leakage; 
 4, spaced above the diaphragm such that the bonnet, the stem parts from erosion of media; 
 5, the diaphragm can be replaced, low maintenance costs; 
 6, diversity lining material, may be applied to a variety of media, and has good corrosion resistance .
 

The main part material
name
material
Body
Cast iron, stainless steel
cap
cast iron
Disc
cast iron
Handwheel
cast iron
Diaphragm
Natural rubber, butyl rubber and so on
Valve stem
Carbon steel


The main dimensions and connection dimensions
Nominal diameter (dn)
Nominal pressure (mpa)
Working pressure (mpa)
l
d
d1
z-φ
f
h1
h2
d0
Weight (kg)
20
1.6
1.6
117
105
75
4-14
2
93
103
66
3
25
127
115
85
4-14
2
100
112
66
4
32
146
140
100
4-18
2
127
144
96
6.5
40
159
150
110
4-18
2
136
156
96
7.5
50
190
165
125
4-18
2
151
177
118
10
65
1.0
1.0
216
185
145
4-18
2
183
213
165
16
80
254
200
160
8-18
2
198
273
230
23.5
100
305
220
180
8-18
2
266
320
280
34
125
356
250
210
8-18
3
319
386
280
44
150
406
285
240
8-22
3
380
453
368
67.5
200
0.6
521
340
295
8-22
3
506
626
400
141.5
250
635
395
350
12-22
3
598
734
500
229
300
0.4
749
445
400
12-22
3
698
778
560
321
350
749
505
460
16-22
3
723
883
560
360
400
0.25
-
565
515
16-26
3
868
1078
640
584
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