
Class 250 NRS Flanged Gate Valve
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Class 250 NRS Flanged Gate Valve
Technical Features
Size: DN50-DN600 / 2"-24"
Working Pressure: Class 250
Design Standard: MSS SP-70
Test Standard: API 598
Flange Standard: ASME / ANSI B16.1 Class 125 or 16.42 Class 150 or BS EN 1092-2 PN16
Face to Face Standard: ASME B16.10(250LB)
Working Temperature: -20°C to 180°C
Note: NSF 61 and NSF 372 approval available for 2"-12"
Valve Material List
NO. |
Description |
Material |
1 |
Body |
Cast lron Ductile lron |
2 |
Seat Rings |
Bronze |
3 |
Disc Face Rings |
Bronze |
4 |
Disc |
Cast Iron/Ductile lron |
5 |
Disc Nut |
Brass |
6 |
Stem |
Brass |
7 |
Body Gasket |
Stainless Steel Spiral wound |
8 |
Bolts |
Steel |
9 |
Nuts |
Steel |
10 |
Bonnet |
Cast lron/Ductile lron |
11 |
Gland Follower Bolts |
Steel |
12 |
Stuffing Box Gasket |
Graphite |
13 |
Stuffing Box |
Cast lron |
14 |
Packing |
Graphite |
15 |
Gland Follower |
Ductile lron |
16 |
Packing Gland |
Brass |
17 |
Handwheel |
Cast lron /Ductile lron |
18 |
ldentification Plate |
Aluminium |
19 |
Washer |
Steel |
20 |
Handwheel Nut |
Steel |
Dimensions
DN |
INCH |
L |
Dg |
D |
b |
ANSI 300 |
Do |
H |
|
Dk |
n-d |
||||||||
50 |
2" |
216 |
106.5 |
165 |
22.3 |
127 |
8-19 |
178 |
289 |
65 |
2.5” |
241 |
125.5 |
191 |
25.4 |
149 |
8-22 |
178 |
323 |
80 |
3" |
282 |
144.5 |
210 |
28.6 |
168 |
8-22 |
200 |
338 |
100 |
4" |
305 |
176.5 |
254 |
31.8 |
200 |
8-22 |
254 |
411 |
125 |
5" |
381 |
211.5 |
279 |
35 |
235 |
8-22 |
300 |
503 |
150 |
6" |
403 |
246.5 |
318 |
36.6 |
270 |
12-22 |
300 |
558 |
200 |
8" |
419 |
303.5 |
381 |
41.3 |
330 |
12-25 |
348 |
650 |
250 |
10" |
457 |
357.5 |
445 |
47.6 |
387 |
16-29 |
400 |
770 |
300 |
12” |
502 |
418 |
521 |
50.8 |
451 |
16-32 |
457 |
861 |
350 |
14" |
572 |
481.5 |
584 |
54 |
514 |
20-32 |
508 |
991 |
400 |
16" |
610 |
535 |
648 |
57.3 |
572 |
20-35 |
558 |
1058 |
450 |
18" |
660 |
592.5 |
711 |
60.4 |
629 |
24-35 |
610 |
1206 |
500 |
20" |
711 |
649.5 |
775 |
63.5 |
686 |
24-35 |
640 |
1276 |
600 |
24" |
787 |
768.5 |
914 |
69.9 |
813 |
24-41 |
762 |
1466 |
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