.
CHECK / NON RETURN VALVES
 

BOLTED COVER & PRESSURE SEAL SWING CHECK VALVES

Class - 150-300-600-900-1500-2500
 
DESIGN STD: API 6D, BS 1868 FOR CLASS 150, 300 & 600
                           : API6D, ASME B16.34 FOR CLASS 900, 1500 & 2500
TESTING STD: API 6D, EN 12266-1 FOR CLASS 150, 300 & 600
: API6D, API 598 FOR CLASS 900, 1500 & 2500
 
Features :
Heavy duty bolted cover / Pressure seal cover, with renewable seatring for Carbon Steel & integral seatring for stainless steel, Cover mounted / body mounted disc, Valves with most advanced design Features provide the ultimate in dependable, economical flow check.
 
Test Pressure in bar (psi)
Class
150
300
600
900
1500
2500
Hyd. Shell
30 (435)
77 (1117)
155 (2248)
230 (3335)
384 (5568)
647 (9382)
Seat/Back Seat
22 (319)
57(827)
113 (1639)
169 (2451)
282 (4089)
474 (6873)
Air Seat
5.5 (80)
14 (203)
28 (406)
42 (609)
70.5 (1022)
118.5 (1718)
Dimension are in mm (inch)
BOLTED COVER
 
PRESSURE SEAL
Size
Class - 150
Class - 300
Class - 600
Class - 900
Class - 1500
Class - 2500
mm
inch
A
B
Wt 1)
A
B
Wt 1)
A
B
Wt 1)
A
B
Wt 1)
A
B
Wt 1)
A
B
Wt 1)
40
1.5
165
6.5
95
3.7
6.8
15
241
9.5
95
3.7
10.5
23
50
2.0
203
8.0
115
4.5
11.5
25
267
10.5
120
4.7
18
40
292
11.5
138
5.4
25
55
216
8.5
180
7.1
27
60
216
8.5
180
7.1
31
68
279
11
175
6.9
43
95
65
2.5
216
8.5
120
4.7
17
38
292
11.5
132
5.2
21
46
330
13
145
5.7
32
71
254
10.0
195
7.7
29
64
254
10
195
7.7
34
75
330
13
190
7.5
72
159
80
3.0
241
9.5
135
5.3
25
55
318
12.5
150
5.9
34
75
356
14
165
6.5
62
137

305
12.0

235
9.3
31
68
305
12
235
9.3
37
82
368
14.5
230
9.1
91
201
100
4.0
292
11.5
150
5.9
41
90
356
14
170
6.7
54
119
432
17
190
7.5
115
254
356
14.0
265
10.4
41
90
406
16
265
10.4
64
141
457
18.0
260
10.2
125
276
125
5.0
330
13.0
170
6.7
56
124
400
15.7
210
8.3
75
165
508
20
220
8.7
165
364
432
17.0
310
12.2
69
152
483
19
310
12.2
96
212
533
21.0
290
11.4
190
419
150
6.0
356
14.0
195
7.7
73
161
444
17.5
210
8.3
106
234
559
22
255
10
210
463
508
20.0
325
12.8
96
212
559
22
325
12.8
145
320
610
24
330
13
274
604
200
8.0
495
19.5
220
8.7
103
227
533/
21
255
10.0
160
353
660
26
300
11.8
355
783
660
26.0
440
17.3
215
474
711
28
460
18.1
353
778
762
30
410
16.1
480
1058

250
10.0

622
24.5
260
10.2
160
353
622
24.5
305
12.0
254
560
787
31
335
13.2
580
1279
787
31.0
535
21.1
330
728
863
34
535
21.1
602
1327
300
12.0
698
27.5
310
12.2
224
494
711
28
350
13.8
355
783
838
33
395
15.6
725
1598
914
36.0
630
24.8
546
1204
990
39
630
24.8
691
1523
350
14.0
787
31.0
365
14.4
350
772
838
33
390
15.4
620
1367
400
16.0
864
34.0
505
19.9
472
1041
864
34
530
20.9
680
1499
450
18.0
978
38.5
565
22.2
535
1179
978
38.5
590
23.2
1250
2756
500
20.0
978
38.5
610
24.0
870
1918
1016
40.0
655
25.8
1460
3219
600
24.0
1295
51.0
740
29.1
1090
2403

1346
53.0

790
31.1
2055
4531
 
Materials
Body / Cover / Hinge / bracket
ASTM A216 Gr. WCB, A217 Gr. WC6/ WC9 / C5 / C12, A352 Gr. LCB,A351 Gr. CF8 / CF8M / CF3 / CF3M
Disc / Seat Ring
ASTM A216 Gr. WCB, A351 Gr. CF8/ CF8M / CF3 / CF3M
Gasket
Spiral Wound 304/316 with CAF / Graphite / PTFE filled (Applicable for bolted cover Valves)
Pressure Seal Ring
Expanded Graphite (Applicable for Pressure Seal Check Valves.)
Stud / Nut
ASTM A 193 Gr. B7/ B16 / B8 / B8M / A 194 Gr. 2H / 7 / 8 / 8M
Surface Protection for Carbon Steel Valves

Prime Coat: Chlorine free with modified alkyd resin unobjectionable in physiological and toxicological respects. Additional external coating: Silver Streak aluminium paint.

 
1) Nett in Kg. (Ibs) approx. (without obligation) for Flanged Ends Class 150, 300 & 600, Butt Weld Ends Class 900,1500 & 2500 (Short Pattern) * Butt Weld Ends to ASME B 16.25. *Class 900,1500 & 2500 Flanged Ends valves available on request. * Disc is mounted in cover for sizes 40 (11/2) to 300 (12) Class 150, 300 & 600 Valves and body mounted for remaining Sizes & Classes. * Seal faces of Disc & Seatring of WCB material are 13% Chrome overlaid for Class 150, 300 & 600 Valves. * Stellited Seat faces for Class 900, 1500 & 2500 Valves. * Please Specify Working pressure, Temperature & Service conditions. * Valves can be supplied with Ring Joint, Large or Small Tongue & Groove. * Other Materials not mentioned above available on request.