FNW 321A User Manual

Figure 321A

Pressure (PSIG)

CARBON STEEL BALL VALVES

3 PC FULL PORT 2000 CWP

Features:

• 2000 PSI CWP* Non-Shock

• Working Steam Pressure (WSP)

• 150 PSI - Fig. 321A

• 250 PSI - Fig. 321AC

• Full Port

• Blow-out Proof Stem

• Live-Loaded Packing

• Anti-static Design

• Investment Cast Body

• TFM (Super TFE) Seats

• End Connections

• Threaded

• Socket Weld

• Stainless Steel Handle

• Locking Lever

• Tapped Hole Mounting Pad

• Vacuum rated to 26.967”Hg (75 Torr)**

• Vented Ball

• Manufactured Silicone Free

• Replacement Locking Handle
Kits Available (1/4”~2”)

• Optional Stem Extension Kit (Uses Existing
Valve Handle)(1/4”~2”)

• Optional Oval Handle Kit (1/4”~1-1/4”)

Fig. 321AC

Fig. 321A

Accessories

Optional Socket

Weld Ends

Standards:

• Design: ASME B16.34,
MSS SP-110
NACE MRO103 AND MRO175 Approved

• End Connections:

• NPT - ASME B1.20.1

• SW - ASME B16.11

• Seat/Shell Test: MSS SP-110

* 1/4” to 1” - 2000 PSI CWP

1-1/4” to 2” - 1500 PSI CWP

** Vacuum measurements are often made

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

Figure Number Matrix

FNW 321A Seat/Seals Ends Size

SEAT/SEAL CODE
Blank = Standard Temp (150 WSP)
C = High Temp (250 WSP)

Stem Extensions

(1/4”~2”)

1/4” ~ 1”

2000

1800

1600

1-1/4” ~ 2”

1400

1200

1000

800

600

400

200

-20 0 100 200 300 400 500

END CODE
Blank = Threaded NPT
SW = Socket Weld

Replacement Locking
Handles Kits (1/4”~2”)

TFM-4215

TFM-1600+20%GF

250 WSP

150 WSP

Saturated Steam Curve

Temperature (°F)

SIZE CODE
1/4 = B
3/8 = C
1/2 = D
3/4 = F

1 = G
1-1/4 = H
1-1/2 = J
2 = K

Oval Handle Kits (1/4”~1-1/4”)

Repair Kits (Order

FNW 320A Kit Size

SIZE CODE

1/4”-3/8” BC
1/2” = D
3/4” = F

1” = G
1-1/4” = H
1-1/2” = J
2” = K

Kit Codes (Order Separately)

FNW 320A Kit Size

KIT TYPE
Locking Handle = LHK
Stem Extension = SEK
Oval Handle = OH

Note: The Figure 321A uses the same accessories
as the 320A.

SIZE CODE
1/4”~3/4” = BF
1”~1-1/4” = GH
1-1/2”~2” = JK

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CARBON STEEL BALL VALVES

3 PC FULL PORT 2000 CWP

Standard Materials

Ref.

Description

No.

1 Body ASTM A216 Gr. WCB Carbon Steel 1

2 End Cap ASTM A216 Gr. WCB Carbon Steel 2

3 Ball 316SS Stainless 1

4 Seat TFM1600+20%GF TFM4215 2

Body

5

Bolt

6 Stem 316SS Stainless 1

7 Anti-Static Device 316SS Stainless 2

8 Thrust Washer TFM4215 1

9 V-Ring Packing PTFE TFM1600 1 Set

10 Bushing 50% Stainless + 50% PTFE 1

11 Gland 316SS Stainless 1

12 Belleville Washer 301SS Stainless 2

13 Stem Nut ASTM A194-8 Stainless 2

14 Stop-Lock-Cap 304SS Stainless 1

15 Handle 304SS Stainless 1

16 Handle Sleeve Vinyl Plastic 1

17 Lock Device 304SS Stainless 1

Bolt

18

Washer

19 Bolt Nut 1/4~1-1/4 ASTM A194-8 Stainless 4

20 Stop Bolt ASTM A193-B8 Stainless 1

21 Stop Washer 304SS Stainless 1

22 Body Gasket PTFE PTFE+20%CF 2

23 O-Ring FKM 1

1/4~1-1/4

1-1/2~2 8

1/4~1-1/4

1-1/2~2 8

Figure 321A Figure 321AC

ASTM A193-B8 Stainless

Figure 321A

Material

304SS Stainless

Qty

4

4

Dimensions (inches)

SIZE Ød L H1 H W ØE S U A J K (UNF) Ls L2 M (UNC) B L1 ØB1

1/4 0.42 2.76 1.18 2.99 5.31 1.65 0.25 M5 0.68 0.41 3/8-24 2.13 1.61 1/4-20 0.93 0.43 0.55
3/8 0.50 2.76 1.18 2.99 5.31 1.65 0.25 M5 0.68 0.41 3/8-24 2.13 1.61 1/4-20 0.93 0.43 0.69
1/2 0.59 2.95 1.42 3.27 5.31 1.65 0.25 M5 0.80 0.46 3/8-24 2.44 1.83 5/16-18 1.10 0.43 0.86
3/4 0.79 3.15 1.56 3.27 5.31 1.65 0.25 M5 0.80 0.46 3/8-24 2.74 2.05 3/8-16 1.34 0.51 1.07

1 0.98 3.54 1.79 3.86 6.69 1.97 0.35 M6 0.92 0.49 9/16-18 3.18 2.36 3/8-16 1.81 0.51 1.34
1-1/4 1.25 4.33 1.97 4.06 6.69 1.97 0.35 M6 0.92 0.49 9/16-18 3.86 2.76 1/2-13 2.17 0.51 1.68
1-1/2 1.50 4.72 2.36 4.33 7.87 2.76 0.38 M8 1.18 0.59 5/8-18 4.12 3.24 1/2-13 2.24 0.51 1.91

2 1.95 5.51 2.68 4.69 7.87 2.76 0.38 M8 1.18 0.59 5/8-18 4.90 3.68 5/8-11 2.87 0.63 2.41

DOC: FNW321A11 Ver. 06/2018

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The contents of this publication are presented for information purposes only, and while effort has been made to ensure their accuracy, they are not to be construed as
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conditions, which are available on request. We reserve the right to modify or improve the designs or specications of our products at any time without notice. Always
verify that you have the most recent product specications or other documentation prior to the installation of these products.

Cv, Torque & Weight

Size Cv

1/4 15 69 2.34 2.34
3/8 15 69 2.34 2.34
1/2 18 77 2.29 2.25
3/4 36 98 3.15 3.15

1 48 166 4.59 4.59
1-1/4 58 277 7.61 7.61
1-1/2 120 388 9.92 9.92

2 190 582 15.21 15.48

Torque
(in-lbs)

Wt (lbs)

NPT SW