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Fakai Valve Factory Site: Yongxing Industrial Zone, Longwan District, Wenzhou City Tel: 0577-88767789
Fax: 0577-85983279
Mobile: 15958706338
Contact: Mr. Wang Email: 1552028357@qq.com
Website: http://timbuist.com

H44W Stainless Steel American Standard Check Valve

H44W stainless steel American standard check valve structure diagram
H44W stainless steel American standard check valve structure diagram

Scope of application

H44W stainless steel American standard check valve is strictly designed and manufactured according to API 6D standard. The connection between pin and disc adopts built-in structure, excellent performance and reliable seal. The products are widely used in pipelines under various working conditions such as petroleum, chemical, pharmaceutical and power industries.

Structural features

  1. Designed and manufactured in accordance with American National Standard ANSI B16.34, American Petroleum Institute standard API6D requirements.
  2. The opening pressure is small, and the valve flap can be fully opened with a small pressure difference.
  3. The rocker pin adopts a built-in structure, which reduces the disadvantages of external leakage.
  4. Class150-Class900 check valve body valve cover is bolt structure. Class1500-Class2500 check valve flange adopts internal pressure self-sealing structure.

Manufacturing standards (fire, anti-static)

Types of Design and Manufacturing Structure length Flange size Pressure-temperature Test-inspection
Swing check valve Lift check valve API6D
BS1868
ASME B16.10 ASME B16.5 ASME B16.34 APl 598

Stress test

Nominal pressure
PN (lb)
Strength test Water seal test Hermetic seal test
MPa Lbf / in2 MPa Lbf / in2 MPa Lbf / in2
150 3.1 450 2.2 315 0.5-0.7 60-100
300 7.8 1125 5.6 815
600 15.3 2225 11.2 1630
900 23.1 3350 16.8 2440
1500 38.4 5575 28.1 4080
2500 64.6 9367 47.4 6873

Part material

case ASTM A216 WCB ASTM A351 CF8
Disc and bracket WCB CF8 CF8M Monel
Pin F6a F304 F316 Monel F304
Disc surface 13Cr 13Cr STL 304 STL 316 STL Monel 304 304 STL
Seat surface 13Cr 13Cr STL 304 STL 316 STL Monel 304 304 STL
case ASTM A351 CF3 ASTM A351 CF8M ASTM A351 CF3M
Disc and bracket
Pin F304L F316L F316L
Disc surface 304L 304L STL 316 316 STL 316L 316L STL
Seat surface 304L STL STL 316 STL STL 316L STL STL

Dimension table

caliber Class150 (PN20) Class300 (PN50)
DN NPS L d H L d H
RF RTJ BW RF RTJ BW
50 2 203 216 203 51 132 267 283 267 51 144
65 216 229 216 64 147 292 308 292 64 169
80 3 241 254 241 76 176 318 333 318 76 210
100 4 292 305 292 102 198 356 371 356 102 260
125 5 330 343 330 127 255 400 416 400 127 295
150 6 356 368 356 152 320 445 460 445 152 326
200 8 495 508 495 203 380 533 549 533 203 380
250 10 622 635 622 254 440 622 638 622 254 440
300 12 699 711 699 305 480 711 727 711 305 520
350 14 787 800 787 337 530 838 854 838 337 540
400 16 864 876 864 387 580 864 879 864 387 588
450 18 978 991 978 438 618 978 994 978 438 670
500 20 978 991 978 489 657 1016 1035 1016 489 720
Class600 (PNl10) CIass900 (PN150)
50 2 292 295 292 51 170 368 371 368 51 200
65 330 333 330 64 178 419 422 419 64 220
80 3 356 359 356 76 246 381 384 381 76 280
100 4 432 435 432 102 290 457 460 457 102 320
125 5 508 511 508 127 320 559 562 559 127 360
150 6 559 562 559 152 360 610 613 610 152 400
200 8 660 664 660 203 430 737 740 737 203 480
250 10 787 791 787 254 502 838 841 838 254 560
300 12 838 841 838 305 554 965 968 965 305 632
Class1500 (PN260) Class2500 (PN420)
50 2 368 371 368 51 210 451 454 451 42 230
65 419 422 419 64 240 508 514 508 52 260
80 3 470 473 470 76 303 578 584 578 62 330
100 4 546 549 546 102 340 673 683 673 87 370
125 5 673 676 673 127 380 794 807 794 96 410
150 6 705 711 705 144 430 914 927 914 131 460
200 8 832 841 832 192 500 1022 1038 1022 179 530
250 10 991 1000 991 239 590 1270 1292 1270 223 620