FNW 311AM User Manual

Figure 311AM

CARBON STEEL BALL VALVES

3 PC FULL PORT 1000 CWP

w/ ISO MOUNTING PAD

Features:

• 1000 PSI CWP Non-Shock

• 150 PSI WSP

• Full Port

• Blow-out Proof Stem

• Live-Loaded Packing

• Anti-static Design

• Investment Cast Body

• RTFE Seats

• Threaded NPT Ends
(Socket Weld on Demand, Contact FNW
for Price & Availability)

• 4” With Handle Standard (Lock-out Style)

• Direct Mounting Pad

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

• Vented Ball

• Manufactured Silicone Free

• Optional Locking Handle Kits (1/4”~4”)

Standard 4”

Fig. 311AM

Accessories

Standards:

• Design: ASME B16.34,

• MSS SP-110

• NACE MRO103 and MRO175 Approved

• End Connections: ASME B1.20.1

• Mounting Pad: ISO 5211

• Seat/Shell Test: MSS SP-110

* Vacuum measurements are often made in

inches of mercury below atmospheric pressure.

Figure Number Matrix

FNW 311AM Size

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

2-1/2 = L
3 = M
4 = P

4” Includes Locking HandleLocking Handle Kits (1/4”~3”)

1000

800

600

400

Pressure (PSIG)

200

-20 0 100 200 300 400

150 WSP

Saturated Steam Curve

Temperature (°F)

Kit Codes (Order Separately)

FNW 310AM Kit Size

KIT TYPE

Locking Handle = LHK

Thegure311AMuses

the same handle kit as
the 310AM

SIZE CODE

1/4”~3/4” = BF
1”~1-1/4” = GH
1-1/2”~2” = JK
2-1/2”~3” = LM
4” = P

www.fnw.com

CARBON STEEL BALL VALVES

3 PC FULL PORT 1000 CWP

Standard Materials

Ref.

Description Material Qty

No.

1 Body

2 End Cap

3 Ball 316SS Stainless 1
4 Seat RTFE 2
5 Body Gasket PTFE 2
6 Stem 316SS Stainless 1
7 Anti-Static Device 316SS Stainless 2
8 Thrust Washer PTFE 1

9 O-Ring FKM 1
10 V-Ring Packing PTFE 1 Set
11 Bushing 50% Stainless + 50% PTFE 1
12 Gland 316SS Stainless 1
13 Belleville Washer 301SS Stainless 2
14 Stem Nut ASTM A194-8 Stainless 1
15 Stop-Lock-Cap 304SS Stainless 1

Bolt

16

Washer

Bolt

17

Nut

Body

18

Bolt

19 Handle Adapter 4” ASTM A351 Gr. CF8 Stainless 1
20 Pipe Handle 4” ASTM A53 Steel + Zinc Plating 1
21 Set Screw 4” ASTM A193-B8 Stainless 1
22 Triangle Stopper 4” 420SS Stainless 1
23 Handle Sleeve 4” Vinyl Plastic 1

1/4”~2”
2-1/2” 8
3”~4” 12
1/4”~2”
2-1/2” 8
3”~4” 12
1/4”~3”
4” 6

ASTM A216 Gr. WCB

ASTM A216 Gr. WCB

ASTM A194-8 Stainless

ASTM A193-B8 Stainless

Figure 311AM

Carbon Steel

Carbon Steel

304SS Stainless

1

2

4

4

4

Dimensions (inches)

SIZE Ød L Lm H P A ØE1 ØE2 U1 U2 K (UNF) Ls L2 M (UNC) B L1 ØB1

1/4 0.42 2.95 1.30 1.65 0.35 0.35 1.42 1.65 0.24 0.24 7/16-20 2.23 1.71 1/4-20 1.10 0.39 0.56
3/8 0.50 2.95 1.30 1.65 0.35 0.35 1.42 1.65 0.24 0.24 7/16-20 2.23 1.71 1/4-20 1.10 0.39 0.70
1/2 0.59 2.95 1.30 1.65 0.35 0.35 1.42 1.65 0.24 0.24 7/16-20 2.23 1.71 1/4-20 1.10 0.39 0.86
3/4 0.79 3.15 1.52 1.91 0.35 0.35 1.42 1.97 0.24 0.28 7/16-20 2.44 1.82 5/16-18 1.36 0.51 1.07

1 0.98 3.54 1.76 2.30 0.43 0.43 1.65 1.97 0.24 0.28 9/16-18 2.79 2.10 5/16-18 1.65 0.51 1.34
1-1/4 1.26 4.33 2.13 2.48 0.43 0.43 1.65 2.76 0.24 0.35 9/16-18 3.37 2.68 3/8-16 2.05 0.63 1.69
1-1/2 1.50 4.72 2.42 2.81 0.55 0.55 1.97 2.76 0.28 0.35 3/4-16 3.81 3.05 3/8-16 2.30 0.63 1.93

2 1.97 5.51 2.95 3.08 0.55 0.55 1.97 2.76 0.28 0.35 3/4-16 4.36 3.59 3/8-16 2.81 0.67 2.42
2-1/2 2.50 7.28 3.62 3.94 0.67 0.67 2.76 4.02 0.35 0.43 7/8-14 5.91 4.36 9/16-12 3.41 0.67 2.91

3 2.99 8.07 2.93 4.27 0.67 0.67 2.76 4.02 0.35 0.43 7/8-14 6.50 4.93 9/16-12 3.98 0.67 3.54

4 3.95 9.45 3.76 5.51 0.87 0.87 4.02 0.43 1-1/8-12 7.87 6.26 5/8-11 5.20 0.79 4.53

DOC: FNW311AM11 Ver. 07/2018

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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
warranties or guarantees, expressed or implied, regarding the products or services described herein or their use or applicability. All sales are governed by our terms and
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verify that you have the most recent product

or other documentation prior to the installation of these products.

of our products at any time without notice. Always

Cv, Torque & Weight

Size Cv

1/4 15 60 1.01
3/8 15 60 1.03
1/2 18 66 1.05
3/4 36 80 1.73

1 48 146 2.33
1-1/4 93 242 4.30
1-1/2 165 344 5.21

2 207 503 9.09
2-1/2 450 631 17.31

3 780 1337 24.36

4 1360 1959 51.00

Torque
(in-lbs)

Wt (lbs)