FNW 551 User Manual

Figure 551

150# Carbon Steel OS&Y Gate Valve

Standard Materials

No. Part Name Material

1 Body ASTM A216 Gr. WCB

4 Disc

5 Stem ASTM A182 Gr. F6

9 Bonnet ASTM A216 Gr. WCB
11 Gasket 304+Graphite, Spiral Wound
12 Seat Ring ASTM A105 + STL#6 Faced

14 Stem Packing

15 Gland ASTM A276 Type 410
18 Yoke Sleeve ASTM A439 Gr. D2
19 Hand Wheel Malleable Iron
20 Rivet SS304

20-1 Screw Carbon Steel

22 Stem Retainer Nut Carbon Steel
24 Hand Wheel Nut Carbon Steel
25 Name Plate SS304
35 Bonnet Bolt ASTM A193 Gr. B7
37 Bonnet Bolt Nut ASTM A194 Gr. 2H
40 Gland Bolt ASTM A193 Gr. B7

40-1 Gland Nut ASTM A194 Gr. 2H

47 Gland Flange ASTM A216 Gr. WCB
48 Gland Bolt Pin ASTM A216 Gr. WCB
52 Back Seat ASTM A276 Type 410
53 Grease Fitting Carbon Steel

NOTES:

14" and larger valves have 2-piece yoke and bonnet
16" and larger valves include a gear operator
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

ASTM A216 WCB

+13%Cr Faced

Braided Graphite

+Die Formed Graphite Ring

(OPEN)

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 7.01 7.48 7.99 9.02 10.51 11.50 12.99 14.02 15.00 15.98 17.01 17.99 20.00
H 15.20 17.13 19.02 23.11 30.20 37.60 45.12 52.28 59.80 67.76 74.80 83.31 97.64

ØE 7.87 7.87 9.84 9.84 11.81 13.78 15.75 17.72 19.68 22.05 25.20 25.20 28.35

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.) 40 57 68 104 181 254 419 538 849 1,213 1,455 1,786 2,756

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