Product design and manufacturing in line with the United States national standard ANSIB16.34, American Petroleum Institute APl6D standard requirements. The valve flap is a swing, flow into straight, horizontal pipeline, vertical pipes can be installed. The rocker pin shaft adopts a built-in structure, reduce the leakage defect. The valve body, valve cover bolt connection, high pressure conditions ( PN ≥10MPa ). The flange with internal pressure from the sealing structure, the product has the advantages of small volume, light weight, reliable sealing.
Name
Check
Design standard
APl6D．JlS B2074-2084
Structure length
ANSIB16.10,JISB2002
Pipe flange
ANSI B16.5、JISB2212-2214
Butt welded end size
ANSlB16.25
Test
APl6D/APl598,JlSB2003
Api check valve Pressure test specification
class
Shell test (Mpa)
Seal test (MPa)
High pressure liquid sealing
Low pressure seal
150Lb．PN2.0MPa
2.94
2.16
0.6
300Lb．PN5．OMPa
7.67
5.62
600Lb．PNl O.OMPa
15.3
11.23
JISlOK
2.1
1.6
JIS20K
5.1
3.8
Api check valve Materials for main parts and performance specification
Part name
Material
Body cover Disc Rocker
ASTM A216 WCB
ASTM A351 CFB
ASTM A351 CF8M
ASTM A351 CF3
ASTM A351 CF3M
Pin shaft
1Crl3
OCrl8Ni9
OCrl7Nil2M02
OOCrl9Nil0
OOCrl7Nil4M02
F6a
304
316
304L
316L
disc
Sealing surface
13Cr
13Cr
STL
Body Body STL Body STLR STL
seat
13Cr
STL
STL
disc nut
1Crl3
0Crl8Ni9
OCrl7Nil2M02
00Crl9NilO
OOCrl7Ni4M02
410
304
316
304L
316L
Pin
OCCr8Ni9
0Crl7Nil2M02
00Crl9NilO
00Crl7Nil4M02
304
316
304L
316L
shim
柔性石墨复合垫 (芯板：碳钢或不锈钢)不锈钢带，柔性石墨缠绕垫
Flange bolt
350CrM0 ASTM A193 B7
OCr18Ni9 ASTMA193 B8
Flange nut
45 ASTM A1 94 2H
OCr18Ni9 ASTM A194 8
Apply toWorking conditions
Applicable medium
Water, steam, oil etc.
Acid corrosion medium
Acetic acid corrosion medium
Strong oxidizing agents
Urea and other corrosive medium
Applicable temperature (℃)
-29～425
-40～200(Beyond this temperature range, please specify when ordering)
Note:1 if the flange sealing surface with convex outside of the type. Please specify when ordering.
[H44]Main connection with the dimensions and weight
class
(DN)
Main connection dimensions(mm)
H44Outline dimensions
Weight(kg)
in
mm
L
D
D1
D2
b
f
z-φd
H
150Lb (2.0Mpa) (10K)
2
50
203
152
120.5
92
16
1.6
4-19
165
17
21/2
65
216
178
139.5
105
17.5
1.6
4-19
175
25
3
80
241
190
152.5
127
19.5
1.6
4-19
190
29
4
100
292
229
190.5
157
24
1.6
8-19
215
50
5
125
330
254
216
186
24
1.6
8-22
245
75
6
150
356
279
241.5
216
25.5
1.6
8-22
265
85
8
200
495
343
298.5
270
29
1.6
8-22
320
150
10
250
622
406
362
324
30.5
1.6
12-25
365
240
12
300
698
483
432
381
32
1.6
12-25
415
350
14
350
787
533
476
413
35
1.6
12-29
460
460
16
400
864
597
540
470
37
1.6
16-29
495
580
20
500
978
698
635
584
43
1.6
20-32
590
840
24
600
1295
813
749.5
692
48
1.6
20-35
650
1140
28
700
1448
927
863.5
800
71.5
1.6
28-35
300Lb (5.0MPa) (20K)
2
50
267
165
127
92
22.5
1.6
8-19
190
28
21/2
65
292
190
149
105
25.5
1.6
8-22
205
33
3
80
318
210
168
127
28 5
1.6
8-22
220
45
4
100
356
254
200
157
32
1.6
8-22
245
70
5
125
400
279
235
186
35
1.6
8-22
275
110
6
150
444
318
270
216
36.5
1.6
12-22
295
150
8
200
533
381
330
270
41.5
1.6
12.25
330
230
10
250
622
444
387.5
324
48
1.6
16-29
420
390
12
300
711
521
451
381
51
1.6
16-32
480
520
14
350
838
584
514.5
413
54
1.6
20-32
535
710
16
400
864
648
571.5
470
57.5
1.6
20-35
585
890
20
500
1016
775
686
584.5
63.5
1.6
24-35
685
1360
24
600
1364
914.5
813
692.5
70
1.6
24-41
785
2040
600Lb (10.0MPa)
2
50
292
165
127
92
26
6.4
8-19
210
32
21/2
65
330
190
149
100
29
6.4
8-22
230
42
3
80
356
210
168
127
32
6.4
8-22
255
60
4
100
432
273
216
157
38
6.4
8-25
295
95
5
125
508
330
266.5
186
45
6.4
8-29
310
120
6
150
559
355.5
292
216
47.5
6.4
12-29
365
220
8
200
660
419.5
349
270
56
6.4
12-32
420
390
10
250
787
508
432
324
63.5
6.4
16-35
505
630
12
300
838
559
489
381
66.5
6.4
20-35
545
870
14
350
889
603.5
527
413
710
6.4
20-38
600
940
16
400
991
686
603
470
76.5
6.4
20-41
650
1100
Note: ①such as flange sealing surface with convex outside of the form, please specify when ordering. 2pressure 900,1500Lb check valve and prod, uction。
