Wafer Dual Check Valves  ★★★★★
  • C23
    		•
    GENERAL INFORMATION TECHNICAL DATA PARTS LIST DIMENSIONS(mm)

    Series C23 wafer dual check valve is a self-operating check valve that is desirable to permit flow in one direction and prevent backflow in the opposite direction. The plates open in case that the upstream pressure exceeds the downstream pressure and the spring elasticity. When the flow velocity upstream decreases or ceases, the spring will automatically close the dual plates prior to flow reversal. This creates a positive shutoff against flow reversal and eliminates system surges and water hammer.

    FEATURES

    • Short face-to-face dimension? Lighter weight than conventional full-body check valves
    • Low cracking pressure because of double disc design? The stop shaft stabilizes the plates under high flow rates? Long leaf springs prevent rubbing of plates on seat
    • Retainerless design eliminates the potential leak path to atmosphere and meets industry fugitive emissions control requirements

    Connection Wafer
    Nominal diameter DN50-DN600
    Pressure rating ANSI CLASS300, ANSI CLASS600, ANSI CLASS900, ANSI CLASS1500
    Face to face API 594
    Coating on steel body Painting system B



    No.Part nameMaterial
    1BodyWCB, CF8, CF8M
    2DiscCF8, CF8M
    3SeatCr13, Stellite
    4StemSS304, SS316
    5SpringSS301, SS321
    6BearingSS316 for metal seat
    7Stop PinSS304, SS316
    8GuideSS304, SS316
    9Set ScrewSS304, SS316
    10Eye BoltSS304, SS316


    

    SIZE C D D1
    DN INCH Class300 Class600 Class900 Class1500 Class300 Class600 Class900 Class1500
    50 2"         111.1 111.1 142.9 142.9 60
    65 2 1/2"         130.2 130.2 165.1 165.1 73
    80 3" 52 52 60 60 149.3 149.3 168.3 174.6 89
    100 4" 90 90 84 84 181 193.7 206.4 209.6 114
    150 6" 140 90 90 90 250.9 266.7 288.9 282.6 168
    200 8" 172 170 130 130 308 320.6 358.8 352.4 215
    250 10" 235 200 195 185 362 400.1 435 435 265
    300 12" 260 232 210 210 422.2 457.3 498.5 520.7 315
    350 14" 286 232 208 208 485.8 492.1 520.7 577.9 355
    400 16" 330 330 162 162 539.8 565.1 574.7 641.3 405
    450 18" 392 330 245 185 596.9 612.7 638.2 704.9 455
    500 20" 440 432 406 210 654.1 682.6 698.5 755.6 505
    600 24" 525 525 445 392 774.7 790.6 838.2 901.7 605

    SIZE D2 L WT(kg)
    DN INCH Class300 Class600 Class900 Class1500 Class300 Class600 Class900 Class1500
    50 2" 51 60 60 70 70 3 3 8 8
    65 2 1/2" 65 67 67 83 83 4 4 10 10
    80 3" 80 73 73 83 83 6 6 12 12
    100 4" 102 73 79 102 102 8 12 19 20
    150 6" 152 98 136 159 159 20 36 50 54
    200 8" 200 127 165 206 206 35 73 116 123
    250 10" 250 146 213 241 248 57 118 197 204
    300 12" 300 181 229 292 305 91 164 293 375
    350 14" 340 222 273 356 356 177 186 396 485
    400 16" 390 232 305 384 384 208 330 533 588
    450 18" 440 264 362 451 468 295 395 610 793
    500 20" 490 292 368 451 533 365 544 639 1278
    600 24" 590 318 438 495 559 526 819 1233 2712