FNW 571 User Manual

Figure 571

150# Carbon Steel Swing Check Valve

Standard Materials

No. Part Name Material

1 Body ASTM A216 Gr. WCB
2 Plug Carbon Steel
3 Plug Seal Carbon Steel

4 Disc

7 Disc Nut Stainless Steel
8 Disc Washer Stainless Steel

9 Bonnet ASTM A216 Gr. WCB
11 Body Seal 304+Graphite, Spiral Wound
12 Seat Ring ASTM A105 + STL#6 Faced
20 Rivet SS304
25 Names Plate SS304
35 Body Bolt ASTM A193 Gr. B7
37 Bolt Nut ASTM A194 Gr. 2H
40 Eye Bolt ASTM A29 1035 (4" & Larger)
48 Hinge Pin ASTM A276 Type 410

48-1 Split Pin ASTM A276 Type 410

63 Hinge ASTM A216 Gr. WCB

NOTES:

Design per API 600
Pressure/Temperature Rating per ANSI B16.34
Flange Dimensions per ANSI B16.5
Face to Face Dimensions per ANSI B16.10
Pressure Tested per API 598

2”-14” ASTM A105+13%Cr Faced

16”-24” ASTM A216 WCB+13%Cr Faced

Dimensions (inches) & Weights (lbs)

Size 2 2-1/2 3 4 6 8 10 12 14 16 18 20 24
Port 2.01 2.52 2.99 4.02 5.98 7.99 10.00 12.01 13.27 15.24 17.24 19.25 23.27

L 7.99 8.50 9.49 11.50 14.02 19.49 24.49 27.48 30.98 34.02 38.50 38.50 50.98
H 5.31 5.83 6.61 9.25 10.91 13.35 15.67 20.67 23.03 22.99 26.30 28.03 29.13

F 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06

ØG 5.98 7.01 7.48 9.02 10.98 13.50 15.98 19.02 20.98 23.50 25.00 27.52 32.01

ØI 3.62 4.13 5.00 6.18 8.50 10.63 12.76 15.00 16.26 18.50 20.98 22.99 27.24

ØJ 4.74 5.49 6.00 7.50 9.51 11.75 14.25 17.01 18.74 21.26 22.76 25.00 29.51

T 0.75 0.89 0.94 0.94 1.02 1.14 1.22 1.26 1.38 1.46 1.57 1.69 1.89
M 4 4 4 8 8 8 12 12 12 16 16 20 20

Flange Dimensions

ØN 0.75 0.75 0.75 0.75 0.87 0.87 0.98 0.98 1.14 1.14 1.26 1.26 1.38

Wt. (lbs.) 256 42 62 88 148 258 439 659 816 1,257 1,466 1,984 2,996

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