Wafer Tilting Disc Check Valve 
Description:

NPS ： 2~36"
Class ： 150~1500LB
Main Materials ：WCB,WCA,WCC,LCB,LCC,WC6,WC9,C5,C12,CF8,CF8M,CF3,CF3M,CF8C,CN7M
Connection:Flanged,BW
Standard: API 6D, ASME B16.34

Description

Wafer Tilting Disc Check Valve

CF8M Wafer Tilting Disc Check Valves are designed and manufactured strictly to International Standards API 6D, ASME B16.34 or Equivalent, to reduce the flow resistance and pressure drop to the minimum possible extend with a feature of compact structure & Low emission service.

 

Characteristics:

 

The characteristics for the valve type are:

Short face-to-face length - invaluable where the space is limited.

Low weight results in low handling costs and makes it easier to install. 

Low pressure drop and low opening pressure.

Fully open with water velocity of only 2.0 ft/s (0.6 m/s) - without closing spring.

Excellent tightness, better than demanded in API 598.

Rapid response - oblique seat reduces closing travel.

Can be furnished with auxilliary spring to reduce water hammering in liquid media.

 

 

Design:

 

The circular wafer body is designed to be clamped between two pipe flanges. The valve disc is suspended on two heavy stub shafts with the selected suspension points giving the fastest closing possible. The seat is oblique in order to give a short closing travel and a short closing time. NAF-Check can also be supplied with an auxiliary spring. Due to the lightweight disc, the auxiliary spring can shorten the closing time further and reduce water hammering to one fourth in comparison to use springless valves at quickly returning liquid flow. In order to facilitate installation, valves > size 2” are equipped with a lifting eye. A cast arrow on the lifting eye indicates the flow direction.

 


Standards Compliance:
» Design & Manufactured to API 6D, ASME B16.34 or Equivalent.
» P.T Ratings to ASME B16.34
» Face to Face Dimensions to API 6D or ASME B16.34
» Flanged Ends to ASME B16.5
» Butt-weld Ends to ASME B16.25
» Valves Marking to MSS SP-25
» Inspect & Tested to API 598 or API 6D
» Size Ranges from 2” thru 42”
» Pressure Ratings from Class 150 to Class 1500LB
» Ends Connections in Flanged R.F or RTJ, Butt-weld or Hub Ends
» Structured in Two Piece Bolted Body, One Piece Union Pressure Sealed Body
» A variety of body and trim material is offered, including carbon steel ASTM A216 WCB, WCC, Low Carbon Steel LCB, LCC, Alloy Steel WC6, WC9, C5, Stainless Steel CF8, CF8M, CF3, CF3M, Duplex & Super Duplex Steel A890 GR.4A,5Aor F51, Special Materials in Monel, Alu. Bronze C95800, 95600 etc. Coatings may be provided for added corrosion or wear resistance. Hard-facing and weld overlays may also be supplied. Seats Options with metal-to-metal or bubble-tight resilient.
» Optional Bypass system, Dashpot & Counter-weight Assembly

Design and Manufacturing Standards
basic Design aPI 6D & aPI 594
Face to Face Dimension aPI 6D & aNSI/aSME b16.10
Flange End Dimension aNSI/aSME b16.5
Inspection & Testing aPI 598

 

Bill of material

NO NAME OF PART MATERIAL
1 BODY A216-WCB A351-CF8M
2 DISC CF8M A351-CF8M
3 SPRING INCONEL X750 INCONEL X750
4 SEAT STELLITE 6 STELLITE 6
5 HINGE PIN 316 SS 316 SS
6 STOP 316 SS 316 SS

 

DIMENSIONS & WEIGHTS

VALVE SIZE PRESSURE RATING END FACING A B C E STUD SELECTION APPROX WT
NO DIA LENGTH LB KG
1.5 nps (40 dn) 150 RF 2.00 3.38 0 1.97 4 0.5 5 4 1.8
300 RF/RJ-20 2.00 3.75 .87 1.97 4 0.75 6.5 4 1.8
600 RF/RJ-20 2.00 3.75 .87 1.97 4 0.75 6.5 4 1.8

 

 

2

(50 dn)

 150 RF 2.38 4.13 .87 2.25 4 0.625 6 7 3.2
300 RF/RJ-23 2.38 4.38 .87 2.25 8 0.625 6.875 8 3.2
600 RF/RJ-23 2.38 4.38 .87 2.25 8 0.625 6.875 8 3.2
900 RF/RJ-24 2.75 5.63 .87 2.25 8 0.875 8.75 18 8.2
1500 RF/RJ-24 2.75 5.63 .87 2.25 8 0.875 8.75 18 8.2
2500 RF/RJ-26 2.75 5.75 .87 2.25 8 1 10 29 13.1

2.5

(65 dn)

 150 RF 2.63 4.88 1.57 2.94 4 0.625 6.375 11 5
300 RF 2.63 5.13 1.57 2.94 8 0.75 6.875 13 5

 

 

3

(80 dn)

 150 RF 2.88 5.38 2 3.42 4 0.625 7 14 6.4
300 RF 2.88 5.88 2 3.42 8 0.75 8.125 17 7.7
600 RF 2.88 5.88 2 3.42 8 0.75 8.125 17 7.7
900 RF/RJ-31 3.25 6.63 2.375 3.42 8 0.875 9.5 26 11.8
1500 RF/RJ-35 3.25 6.88 2.375 3.42 8 1.125 10.5 28 12.7
2500 RF/RJ-32 3.38 7.75 2.375 3.42 8 1.25 12.25 35 15.9

 

 

4

(100 dn)

 150 RF 2.88 6.88 3.5 4.45 8 0.625 7 21 9.5
300 RF 2.88 7.13 3.5 4.45 8 0.75 8.125 23 10.5
600 RF/RJ-37 3.13 7.63 3.5 4.45 8 0.875 9.5 28 12.7
900 RF/RJ-37 4.00 8.13 3.25 4.45 8 1.125 11 42 19.1
1500 RF/RJ-39 4.00 8.25 3.25 4.45 8 1.25 12 45 20.5
2500 RF/RJ-38 4.13 9.25 3.25 4.45 8 1.5 14.625 64 29.1

 

VALVE SIZE PRESSURE RATING END FACING A B C E STUD SELECTION APPROX WT
NO DIA LENGTH LB KG

5

(125 dn)

 150 RF 3.38 7.75 4.813 5.875 8 0.75 7.375 28 12.7
300 RF 3.38 8.50 4.813 5.875 8 0.75 8.125 31 14.1

 

 

6

(150 dn)

 150 RF 3.88 8.75 5.5 6.52 8 0.75 8.25 36 16
300 RF 3.88 9.88 5.5 6.52 12 0.75 9.625 45 20
600 RF/RJ-45 5.38 10.50 3.5 6.52 12 1 12.375 80 36
900 RF/RJ-45 6.25 11.38 3.5 6.52 12 1.125 14 119 54
1500 RF/RJ-46 6.25 11.13 3.5 6.52 12 1.375 16.75 116 52
2500 RF/RJ-47 6.25 12.50 3.5 6.52 8 2 20.5 154 70

 

 

8

(200 dn)

 150 RF 5.00 11.00 6.75 8.13 8 0.75 9.75 80 36
300 RF 5.00 12.13 6.75 8.13 12 0.875 11.125 88 40
600 RF/RJ-49 6.50 12.63 6.625 8.13 12 1.125 14.5 160 72
900 RF/RJ-49 8.13 14.13 5.125 8.13 12 1.375 17.125 271 122
1500 RF/RJ-50 8.13 13.88 5.125 8.13 12 1.625 20.25 257 116
2500 RF/RJ-51 8.13 15.25 5.625 8.13 12 2 24 293 132

 

 

10

(250 dn)

 150 RF 5.75 13.38 9.25 10.25 12 0.875 11 116 52
300 RF 5.75 14.25 9.25 10.25 16 1 12.75 124 56
600 RF/RJ-53 8.38 15.75 7.875 10.25 16 1.25 17.125 260 118
900 RF/RJ-53 9.50 17.13 7.688 10.25 16 1.375 19 434 196
1500 RF/RJ-54 9.75 17.13 7.25 10.25 12 1.875 23.5 449 203
2500 RF/RJ-55 10.00 18.75 7.5 10.25 12 2.5 30.5 480 217

 

 

12

(300 dn)

 150 RF 7.13 16.13 10.25 11.82 12 0.875 12.25 215 97
300 RF 7.13 16.63 10.25 11.82 16 1.125 14.625 217 98
600 RF/RJ-57 9.00 18.00 9.125 11.82 20 1.25 18 360 164
900 RF/RJ-57 11.50 19.625 8.125 11.82 20 1.375 21.75 644 293
1500 RF/RJ-58 12.00 20.50 8.25 11.82 16 2 27.5 824 373
2500 RF/RJ-60 12.00 21.63 8.875 11.82 12 2.75 34.5 870 394

 

14

(350 dn)

 150 RF 7.25 17.75 11.25 13.34 12 1 13 270 123
300 RF 8.75 19.13 11.25 13.34 20 1.125 16.5 390 176
600 RF/RJ-61 10.75 19.38 9.125 13.34 20 1.375 20.25 410 186
900 RJ/RJ-62 14.00 20.50 9.45 13.34 20 1.5 25.5 872 396
1500 RF/RJ-63 14.00 22.75 7.87 13.34 16 2.25 31.5 1068 484

 

16

(400 dn)

 150 RF 7.50 20.25 13.063 15.25 16 1 13.5 295 133
300 RF 9.13 21.25 13 15.25 20 1.25 17.375 458 207
600 RF/RJ-65 12.00 22.25 13 15.25 20 1.5 22.25 728 331
900 RF/RJ-66 15.13 22.63 6.375 15.25 20 1.625 27.125 1174 532
1500 RF/RJ-67 15.125 25.25 6.375 15.25 16 2.5 34.25 1295 587

 

18

(450 dn)

 150 RF 8.00 21.63 15.563 17.25 16 1.125 14.5 312 141
300 RF 10.38 23.50 15.375 17.25 24 1.25 18.875 650 294
600 RF/RJ-69 14.25 24.13 13 17.25 20 1.625 25.25 870 394
900 RF/RJ-70 17.75 25.13 9.625 17.25 20 1.875 34.5 1344 611
1500 RF/RJ-71 18.44 27.75 7.25 17.25 16 2.75 39.75 1745 791

 

20

(500 dn)

 150 RF 8.63 23.88 17.25 19.19 20 1.125 15.125 472 215
300 RF 11.50 25.75 17.25 19.19 24 1.25 20.5 801 363
600 RF/RJ-73 14.50 26.88 17 19.19 24 1.625 26.25 1196 544
900 RF/RJ-74 17.75 27.50 16 19.19 20 2 32.5 1406 637
1500 RF/RJ-75 21.00 29.75 8.25 19.19 16 3 44.25 2812 1275

 

24

(600 dn)

 150 RF 8.75 28.25 21.125 22.78 20 1.25 16.25 788 358
300 RF 12.50 30.50 20.625 22.78 24 1.5 22.75 1150 521
600 RF/RJ-77 17.25 31.13 20.063 22.78 24 1.875 30.75 1802 819
900 RF/RJ-78 19.50 33.00 17.5 22.78 20 2.5 38 2713 1230
1500 RF/RJ-79 22.00 35.50 15.375 22.78 16 3.5 48.5 5968 2713
 

 

VALVE SIZE PRESSURE RATING END FACING A B C E STUD SELECTION APPROX WT
NO DIA LENGTH LB KG

 

26

(600 dn)

 150 RF 14.00 30.50 23.5 24.78 24 1.25 23.125 1056 680
300 RF 14.00 32.88 23.5 24.78 28 1.625 24.75 1619 735
600 RF/RJ-73 18.00 34.13 22.75 24.78 28 1.875 31.5 1855 842
900 RF/RJ-100 21.00 34.75 22 24.78 20 2.75 38.75 2605 1182

 

28

(700 dn)

 150 RF 15.00 32.75 25.5 26.78 28 1.25 24.375 1196 544
300 RF 15.00 35.38 25.5 26.78 28 1.625 26.25 1612 733
600 RF/RJ-94 19.00 36.00 24.75 26.78 28 2 33 1916 871
900 RF/RJ-101 22.50 37.25 24 26.78 20 3 41 3170 1441

 

30

(750 dn)

 150 RF 12.00 34.75 25.25 28.93 28 1.25 21 1456 662
300 RF 14.50 37.50 25.25 28.93 28 1.75 26.5 2100 952
600 RF/RJ-95 19.88 38.25 23 28.93 28 2 34.125 3472 1578
900 RF/RJ-102 25.00 39.75 23 28.93 20 3 44 4024 182

 

32

(800 dn)

 150 RF 14.00 37.00 25.25 30.87 28 1.5 24.625 1556 707
300 RF 16.00 39.63 25.25 30.87 28 1.875 28.75 3597 1635
600 RF/RJ-96 21.00 40.25 24 30.87 28 2.25 36 3835 1743
900 RF/RJ-105 26.00 42.25 24 30.87 20 3.25 46.25 4475 2034

 

36

(900 dn)

 150 RF 14.50 41.25 25.5 34.04 32 1.5 25.875 1505 682
300 RF 19.00 44.00 25.5 34.04 32 2 32.5 2799 1269
600 RF/RJ-98 25.00 44.50 20.75 34.04 28 2.5 45 4664 2120
900 RF/RJ-105 28.25 47.25 14 34.04 20 3.5 50.75 7183 3259

 

40

(1000 dn)

 150 RF 17.00 45.75 34.75 38.87 36 1.5 27.375 1980 900
300 RF 21.50 43.88 29.5 35.78 32 1.625 35 4015 1825
600 RF 26.00 45.50 29.25 35.78 32 2.25 44.25 8250 3750
900 RF 30.00 49.25 29 35.78 24 3.5 53.75 8738 3972

 

42

(1050 dn)

 150 RF 17.00 48.00 36.813 41.81 36 1.5 28.875 2500 1134
300 RF 22.38 45.88 32.938 39.98 32 1.625 37 5800 2630
600 RF 27.63 48.00 25.5 38.26 28 2.5 47.125 6897 3135
900 RF 31.00 51.25 23 38.26 24 3.5 59.25 8074 3670

48

(1200 dn)

 150 RF 20.63 54.50 40.813 46.98 44 1.5 33.375 6616 3007
300 RF 24.75 52.13 38 44.73 32 1.875 40.5 8600 3909
600 RF 31.00 54.75 35 44.73 32 2.75 54 9715 4416

54

(1400 dn)

 150 RF 23.25 61.00 43 50.45 44 1.75 38.25 7097 3225
300 RF 28.25 58.75 43 50.45 28 2.25 47.25 8532 3878

60

(1500 dn)

 150 RF 26.00 67.50 47.5 55.97 52 1.75 42 9126 4148
300 RF 33.00 64.75 47.5 55.97 32 2.25 53 11863 5392

66

(1650 dn)

 150 RF 31.00 74.25 56.5 65.46 52 1.75 45 16800 7636

72

(1800 dn)

 150 RF 33.50 80.75 60.25 71.58 60 1.75 48 18900 8590

78

(1950 dn)

 150 RF 36.50 87 65.5 77.716 64 2 52 22522 10237

84

(2100 dn)

 150 RF 41.00 93.5 69 95.5 64 2 57 28111 12777

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