Product Details
Wafer Check Valve
Packing:
Wooden
Standard:
Dn15~Dn400
Productivity:
50, 000 PCS/Year
Trademark:
DEF
Origin:
China
Function:
Nrvr Silence
Material:
Cast Steel
Structure:
Lift
Connection Form:
Flange
Export Markets:
North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
Product Description
DIN Check valve are used in various industries such as petroleum, water, steam industry etc under nominal pressure of PN1.6~PN4.0Mpa and working temperature of -20~450 degrees.
NO.
Part name
Material
1
Body
GS-C25,CF8,CF3
2
Disc
1Cr13,F304,F316
3
Composite Washer
Flexible graphite+304 Flexible graphite+304,PTFE
4
Cover
GS-C25,CF8,CF3
5
Nut
ASTMA193 7,A193-8,A193-8M
6
Double-headed Bolt
ASTMA193 B7,A193-B8,A193-B8M
TECHNICAL SPECIFICASTION
Design standard
DIN3356
Face to face
DIN3202
Flange ends
DIN2543-2546
Test & inspection
PRODUCTS PERFORMANCE SPECIFICATION
Nominal pressure(LB)
Shell test (Mpa)
Sealing test (Mpa)
Suitable temp 50,000 pcs/year
Suitable medium
1.6
2.4
1.76
-20~425degrees
Water, Steam, oil
2.5
3.75
2.75
4.0
6.0
4.4
Pressure
PN16
SIZE
15
20
25
32
40
50
65
80
100
125
150
200
250
300
L
130
150
160
180
200
230
290
310
350
400
480
600
730
850
H
70
70
80
80
85
95
110
130
155
165
215
285
325
365
Kv
2.4
3
3.8
5.7
7.4
10.3
15.2
20.4
31
49
69
132
198
278
Pressure
PN16
SIZE
15
20
25
32
40
50
65
80
100
125
150
200
250
300
L
130
150
160
180
200
230
290
310
350
400
480
600
730
850
H
70
70
80
80
85
95
110
130
155
165
215
285
325
365
Kv
2.4
3
3.8
6
8
11
16
21
32
51
70
136
318
330
Pressure
PN16
SIZE
15
20
25
32
40
50
65
80
100
125
150
200
250
300
L
130
150
160
180
200
230
290
310
350
400
480
600
730
850
H
70
70
80
80
85
95
110
130
155
165
215
285
325
365
2.4
3
3.8
7.1
10.4
12.7
22.5
28
40
64
90
170
240
370
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