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Marine Cast Steel Overboard Stop Check Valve GB/T1853-2008 Type A/AS

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China Marine Cast Steel Overboard Stop Check Valve GB/T1853-2008 Type A/AS:

Marine Cast Steel Overboard Stop Check Valveis used as the ship side valve in the marine sea water and fresh water pipe system.

Design Standard: GB/T1853-2008

Test Standard: GB/T600

Flange size as per GB/T569 or GB/T2501

Technical Data:

Type Nominal Pressure(Mpa) Nominal Diameter(mm) Applicable Medium
A,B (as per GB/T569) 0.6 40~350 sea water,fresh water
AS,BS(as per GB/T2501)

Main Parts & Material:

Body-Cast Steel

Bonnet-Cast Steel

Disc-Bronze or Stainless Steel

Seat-Bronze or Stainless Steel

Stem-Bronze or Stainless Steel

Main Size List(mm):

DN (mm) Structure Dimension Thickness t Flange Bolt hand wheel Lift Range m≈ Weight(kg)
A B
H L H L L1 D D1 D2 d0 b n Th. D0 S A B
40 300 200 326 90 90 6 125 93 74 15 13 6 M14 120 11 12 7.8 7.5
50 218 230 383 95 95 7 135 103 84 15 13 6 M14 140 12 15 10.8 10.7
65 348 290 430 115 115 7 155 123 104 15 14 6 M14 140 12 19 16.3 15.9
80 390 310 474 125 125 7 170 138 118 15 14 8 M14 160 14 23 21.6 21
100 414 350 498 150 135 8 190 158 138 15 14 8 M14 180 14 28 29.7 27.6
125 466 400 561 175 155 8 215 183 164 16 14 10 M14 200 17 35 39.5 39
150 528 480 616 180 160 9 240 208 190 16 14 12 M14 200 17 42 54.8 49.2
200 736 600 829 215 215 10 295 264 247 16 15 12 M14 280 22 55 89 70
250 858 730 986 250 250 11 365 327 306 18 16 14 M16 320 27 65 139.4 117.5
300 1015 850 1160 300 300 12 430 386 360 22 19 14 M20 400 27 80 192.6 170.8
350 1065 980 1210 320 320 12 480 436 410 22 28 16 M20 450 32 100 230.9 220.4

DN (mm) Structure Dimension Thickness t Flange Bolt hand wheel Lift Range m≈ Weight(kg)
AS BS
H L H L L1 D D1 D2 d0 b n Th. D0 S AS BS
40 300 200 326 115 115 6 130 100 80 14 16 4 M12 120 11 12 8.2 7.9
50 218 230 383 125 125 7 140 110 90 14 16 4 M12 140 12 15 12.8 11.6
65 348 290 430 145 145 7 160 130 110 14 16 4 M12 140 12 19 19.5 18.6
80 390 310 474 155 155 7 190 150 128 18 18 4 M16 160 14 23 24.9 23.8
100 414 350 498 175 175 8 210 170 148 18 18 4 M16 180 14 28 32.65 30.7
125 466 400 561 200 200 8 240 200 178 18 20 8 M16 200 17 35 45.8 44.7
150 528 480 616 225 225 9 265 225 202 18 20 8 M16 200 17 42 59.8 54.9
200 736 600 829 275 275 10 320 280 258 18 22 8 M16 280 22 55 97.1 78.3
250 858 730 986 325 325 11 375 335 316 18 24 12 M16 320 27 65 148.4 126.6
300 1015 850 1160 375 375 12 440 395 365 22 24 12 M20 400 27 80 201.7 179.2
350 1065 980 1210 425 425 12 490 445 415 22 24 12 M20 450 32 100 239.9 229.6

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