FNW HP User Manual

Figure HP

BUTTERFLY VALVES

HIGH PERFORMANCE

BUTTERFLY VALVE

Features:

• Bi-directional Bubble-tight Shutoff

• Suitable for Saturated Steam Service to 150 PSI

• Double Off-Set Con guration with Conical
Angled Disc

• Available in Wafer (3” to 12”) or Lug (3” to 24”)

• Stocked in Carbon by Stainless and All Stainless

Steel Con gurations

• Dead-end Service Rated to Full 285 PSI Pressure
Differential in the Preferred Flow Direction *

• Vacuum rated to 29.91”Hg (0.3750 Torr) +

• Easy access reverse packing gland (up to 12”)

• ISO Top-works for Manual or Direct Mount
Actuation (up to 12”)

• Low Maintenance

• Manufactured in ISO 9001 Facility

Standards:

• Design: API 609

• Mounting Pad: ISO 5211

• End Flange: ASME B16.5

• Wall Thickness: ASME B16.34

• Face to Face: API 609

• Pressure/Temp Rating: ANSI B16.34

• Material Rating: ANSI B16.34

• Shell/Seat Test: API 598

○ Body: CS - 3.2 MPa (464 PSI)

SS - 3.0 MPa (435 PSI)
○ Seat Hydro: 2.3 MPa (333 PSI)
○ Seat Air: 0.6 MPa (87 PSI)

Options

FNW offers many options and modi cations for

valves. These include, but are not limited to:
Actuation including chain wheels, square drive
nuts, worm-gear operators, and pneumatic and
electric operators. Also available are various
control accessories, stem extensions, and custom

mounting hardware. Contact FNW with your speci c

application needs.

* Preferred Flow Direction is de ned as having the seat retainer

ring facing upstream. For non-preferred  ow direction (seat
retainer ring facing downstream), a downstream  ange

is required on 10 inch and larger valves for full 285 PSI

differential. Without a downstream  ange, dead-end service
in the non-preferred  ow direction is limited to 230 PSI for 10

and 12 inch valves, 150 PSI for 14 inch and larger valves.
Pressures listed are for non-shock ambient temperatures.

+ Vacuum measurements are often made in inches of mercury

below atmospheric pressure. The values calculated here
assume standard atmospheric pressure of 29.92 inches of
mercury.

www.fnw.com

Standard Materials

Ref.

No.

1 Body A216 WCB A351 CF8M 1
2 Retainer Ring A105 A351 CF8M 1
3 Seat RTFE (25%GF) 1
4 Disc A351 CF8M 1
5 Stem A 564 630 (UNS S17400) 1 17-4PH
6 Stem Pin A 564 630 (UNS S17400) 1 Set 17-4PH
7 Retaining Ring Washer AISI 1066 A276 321 1 Set
8 Retaining Ring Bolt A193 B8 1 Set

9 Spacer A182 316 1
10 Packing Gland Stud A193 B7 A193 B8 2
11 Packing Gland Nut A194 2H A194 8 2
12 Packing Gland Washer AISI 1066 A276 321 2
13 Packing PTFE 1
14 Packing Gland Ring A182 316 1
15 Packing Gland Flange A105 A182 F316 1
16 Lever Plate Bolt A193 B7 A193 B8 2
17 Lever Plate Nut A194 2H A194 8 2
18 Lever Plate Washer AISI 1066 A276 321 2
19 Lever A536, GR. 65-45-12 1
20 Rivet A182 304 2
21 Nameplate A182 304 1

Description

Material

CS Body SS Body

Qty Remarks

Ref.

No.

22 Upper Stem Bearing 316+PTFE 1

23 Lower Stem Bearing 316+PTFE 1

24 Disc Washer A182 316 2

25 Disc Spring A182 316 1

26 Gasket PTFE 1 8-24 Inch

27 Lower Gland Flange A105 A182 F316 1 8-24 Inch

28 Lower Gland Bolt A193 B7 A193 B8 4 8-24 Inch

29 Lower Gland Washer AISI 1066 A276 321 4 8-24 Inch

30 Lower Bracket Nut A194 2H A194 8 8 14-24 Inch

31 Lower Bracket Washer AISI 1066 A276 321 8 14-24 Inch

32 Lower Bracket Bolt A193 B7 A193 B8 8 14-24 Inch

33 Bracket AISI 1020 1 14-24 Inch

34 Upper Bracket Bolt A193 B7 A193 B8 4 14-24 Inch

35 Upper Bracket Washer AISI 1066 A276 321 4 14-24 Inch

36 Key AISI 1045 A182 F321 2 14-24 Inch

37 Pin A276 321 2 14-24 Inch

38 Gear Operator WCB 1 6-24 Inch

39 Lever Reating Washer AISI 1066 1

40 Lever Retaining Bolt A193 B7 1

41 Notched Lever Plate Steel (Cr Plated) 1 3-4 Inch

Description

Material

CS Body SS Body

Qty Remarks

Dimensions (inches)

Size1Ød ØG ØC

3 3.39 5.00 6.00 4 5/8"-11UNC 2 0.75 1.89 7.09 3.15 10.51 Ø102 (F10) 4-Ø11 0.51 0.63 0.55

4 4.33 6.18 7.50 8 5/8"-11UNC 2 0.75 2.13 7.87 4.09 10.51 Ø102 (F10) 4-Ø11 0

5 5.16 7.32 8.50 8 3/4"-10UNC 2 0.87 2.24 9.25 4.68 12.21 Ø102 (F10) 4-Ø11 0.71 0.94 0.75

6 6.14 8.35 9.50 8 3/4"-10UNC 2 0.87 2.24 9.92 5.31 2.44 7.87 9.84 Ø102 (F10) 4-Ø11 0.71 0.98 0.75

8 7.99 10.63 11.75 8 3/4"-10UNC 2 0.87 2.52 12.21 7.48 2.48 9.05 11.81 Ø125 (F12) 4-Ø14 0.91 1.10 0.87

10 10.00 12.76 14.25 12 7/8"-9UNC 2 0.95 2.80 13.94 9.84 2.48 9.05 11.81 Ø125 (F12) 4-Ø14 1.10 1.26 1.06

12 12.01 15.00 17.00 12 7/8"-9UNC 2 0.95 3.19 17.72 11.42 3.15 10.63 15.75 Ø140 (F14) 4-Ø18 1.10 1.38 1.06

14 13.27 16.26 18.75 12 1"-8UNC 3.62 18.90 11.81 4.72 16.54 19.69 Ø165 (F16) 4-Ø22 3.46 1.38 1.50 0.39

16 15.24 18.5 21.25 16 1"-8UNC 4.02 19.88 13.39 4.72 16.54 19.69 Ø165 (F16) 4-Ø22 3.46 1.57 1.69 0.47

18 17.24 20.98 22.76 16 1-1/8"-8UN 4.49 23.62 14.96 4.96 18.11 23.62 Ø254 (F25) 8-Ø18 3.86 1.81 1.95 0.55

20 19.25 22.99 25.00 20 1-1/8"-8UN 5.00 29.13 15.35 5.43 20.08 23.62 Ø254 (F25) 8-Ø18 3.86 1.97 2.11 0.55

24 23.27 27.24 29.50 20 1-1/4"-8UN 6.06 33.86 18.50 5.43 20.47 29.92 Ø254 (F25) 8-Ø18 3.86 2.36 2.52 0.71

1. 6” and larger valves are standard with gear operator. Gear operators for 4” and smaller valves are available upon request.

2. The N value for lug valves is tapped holes per side. For wafer valves, the number represents through holes.

3. Large body valves have blind tapped holes at the top and bottom of the valve, near the stem. For high performance buttery valves, ANSI B16.5 requires all bolts, 1-1/8” and larger, have an
8-UN thread series.

Lug Wafer

2

N

3

E

N2E

L A B L1 L2 L3 W

ØP mm

(ISO)

M-Øn

mm

H ØX K K1

.

63 0.79 0.67

Cv (Flow Coefcients)

Size

10° 20° 30° 40° 50° 60° 70° 80° 90°

3 6 16 24 36 52 76 113 146 162
4 15 37 55 80 117 172 256 329 365
6 39 98 147 215 313 460 685 880 978

8 70 176 264 387 563 827 1,232 1,584 1,760
10 131 328 492 722 1,050 1,542 2,296 2,952 3,280
12 196 490 735 1,078 1,568 2,303 3,430 4,410 4,900
14 214 536 804 1,179 1,715 2,519 3,752 4,824 5,360
16 307 768 1,152 1,690 2,458 3,610 5,376 6,912 7,680
18 380 950 1,425 2,090 3,040 4,465 6,650 8,550 9,500
20 537 1,342 2,013 2,952 4,294 6,307 9,394 12,078 13,420
24 752 1,880 2,820 4,136 6,016 8,836 13,160 16,920 18,800

Disc Opening

The size of buttery valve used for control purposes should be

calculated on the basis of the operating characteristics. In order to

achieve optimum control, the ow coefcient (Cv) of a valve needs to

be considered. Cv is the volume of water in U.S. gallons per minute
that passes through the valve at a pressure drop of 1 PSI at 68°F.
Flow for a given Cv is typically calculated from the following formula.

Q = Cv x
D

Where:

Q = Valve ow rate in gallons per minute (US GPM)
ΔP = Pounds per square inch (PSI) pressure drop across valve

62.4 = Conversion factor for uids computed in relation to water
D = Density of uids in pounds per cubic foot

ΔP x 62.4