FNW 471A User Manual

Figure 471A

150# Stainless Steel Swing Check Valve

Standard Materials

No. Part Name Material

1 Body
2 Bonnet
3 Disc
4 Hinge
5 Flat Washer
6 Nut
7 Body Seal PTFE
8 Spring Washer
9 Bolt

10 Pin

Socket Hexagon

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NOTES:

CF8M Seat is Integral to Body
Investment Cast Body up to 8”
Design per API 603
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

Screw

ASTM A351-CF8M

AISI 316

AISI 304

AISI 316

Dimensions (inches) & Weights (lbs)

Size 1-1/2 2 2-1/2 3 4 6 8 10 12

d 1.57 1.97 2.56 3.15 3.94 5.91 7.87 9.84 11.81
L 6.50 7.99 8.50 9.49 11.50 14.02 19.49 24.49 27.48
H 3.11 3.88 4.55 5.79 6.57 8.15 9.33 13.78 13.56

f 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08
D 4.92 5.91 7.09 7.48 9.06 11.02 13.58 15.94 19.09
G 2.87 3.63 4.13 5.00 6.19 8.50 10.63 12.75 15.00
C 3.87 4.75 5.50 6.00 7.50 9.50 11.75 14.25 17.00
T 0.56 0.56 0.63 0.69 0.88 0.94 1.06 1.13 1.19
N 4.00 4.00 4.00 4.00 8.00 8.00 8.00 12.00 12.00

Flange Dimensions

M 0.63 0.75 0.75 0.75 0.88 0.94 0.88 1.00 1.00

Wt. (lbs.) 10.4 17.2 25.6 35.9 62.4 103.6 167.6 295.9 430.8

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