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Figure 340N, 340NF, and 350N
THERMOPLASTIC VALVES
FULL PORT TRUE-UNION BALL VALVE
Figure 340N - PVC with NPT
and SW Ends*
Figure 340NF - PVC with
150# Flanges
Figure 350N - CPVC with
NPT and SW Ends*
SW only on sizes over 2". NPT is available
upon request.
Valve Features
• Full Port Design
• Pressure Rating: 150 PSI
• Temperature Range:
• PVC: 41°F to 122°F (5°C to 50°C)
• CPVC: 32°F to 194°F (0°C to 90°C)
• Certifi ed to NSF 61 Annex G
• EPDM or FPM (Viton®) Seals
• O-ring Energized Seats (up to 2")
• Bidirectional Flow *
• Adjustable Seat Tightness
• Easy Disassembly with Handle
• Easy Replacement Reduces Down Time
• Can Be Modifi ed for Actuator Installation
* Note that the valve has a preferred fl ow direction
indicated by the embossed arrow on the body. The
preferred fl ow direction orients the carrier upstream
so that downstream piping can be removed with valve
closed.
Standards
Figure 340N Connections:
• Threaded: ASTM D-2464, ref. ANSI
B1.20.1
• Socket: ASTM D-2467
Figure 340NF Connections:
• Flanged: ANSI B16.5, Class 150
Figure 350N Connections:
• Threaded: ASTM F437
• Socket: ASTM F439
Materials:
• PVC: Cell Classifi cation 12454 per
ASTM D1784 (formerly Type I, Grade 1)
• CPVC: Cell Classifi cation 23447
per ASTM D1784 (formerly Type IV,
Grade 1)
340NF
340N
350N
Options
FNW offers many options and modifi cations for valves. These include, but are not
limited to: Actuation including chain wheels, worm gear operators, pneumatic and
electric operators, control accessories, stem extensions, and custom mounting
hardware. Contact FNW with your specifi c application needs.
142
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Size ØD E L L1 Ød1 Ød2 Ød3 T H1 H2 M2
1/2 0.512 3.03 4.49 2.36 0.84 0.85 1.82 0.87 1.81 0.83 1.18
3/4 0.709 3.74 5.31 2.87 1.05 1.06 2.19 1.00 2.24 1.02 1.30
1 0.906 4.33 5.87 3.11 1.31 1.32 2.62 1.13 2.76 1.30 1.57
1-1/4 1.181 5.00 6.69 3.46 1.66 1.67 3.23 1.25 2.95 1.54 1.85
1-1/2 1.496 5.63 6.93 3.74 1.89 1.91 3.88 1.38 3.70 1.61 2.05
2 1.890 6.46 8.15 4.49 2.37 2.39 4.72 1.50 4.45 2.09 2.76
2-1/2 2.402 7.09 10.83 5.35 2.87 2.89 5.51 1.75 4.57 * *
3 2.717 8.82 11.97 6.22 3.49 3.52 6.30 1.88 5.12 * *
4 3.898 10.94 13.07 6.93 4.49 4.52 8.86 2.25 7.01 * *
* 2-1/2" to 4" valves do not have bosses for mounting pad. Saddle mounts, sold separately, are available for actuation purposes.
Dimensions (inches) Figure 340N and 350N
NOTE: 2-1/2" to 4" valves have
a symmetrical single-piece ABS
tee-handle
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Size ØD E L L1 Ød1 Ød2 Ød3 T H1 H2 M2 ØN n
1/2 0.512 3.03 5.63 2.36 2.40 3.50 1.82 0.51 1.81 0.83 1.18 0.63 4
3/4 0.709 3.74 6.77 2.87 2.76 3.86 2.19 0.55 2.24 1.02 1.30 0.63 4
1 0.906 4.33 7.36 3.11 3.11 4.25 2.62 0.55 2.76 1.30 1.57 0.63 4
1-1/4 1.181 5.00 7.48 3.46 3.50 4.61 3.23 0.63 2.95 1.54 1.85 0.63 4
1-1/2 1.496 5.63 8.35 3.74 3.90 5.00 3.88 0.63 3.70 1.61 2.05 0.63 4
2 1.890 6.46 9.21 4.49 4.76 5.98 4.72 0.63 4.45 2.09 2.76 0.75 4
2-1/2 2.402 7.09 10.20 5.35 5.51 7.01 5.51 0.71 4.57 * * 0.75 4
3 2.717 8.82 11.97 6.22 5.98 7.52 6.30 0.71 5.12 * * 0.75 4
4 3.898 10.94 14.65 6.93 7.52 9.02 8.86 0.71 7.01 * * 0.75 8
* 2-1/2" to 4" valves do not have bosses for mounting pad. Saddle mounts, sold separately, are available for actuation purposes.
Dimensions (inches) Figure 340NF
NOTE: 2-1/2" to 4" valves have
a symmetrical single-piece ABS
tee-handle
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F N W 340N E G
BODY TYPE SEALS SIZE CODES
340N
340NF
350N
=
=
=
PVC w/ NPT & SW ends to 2" (SW only over 2", NPT upon request)
PVC w/ FLANGED ENDS
CPVC w/ NPT & SW ends to 2" (SW only over 2", NPT upon
request)
EV==EPDM
FPM (VITON®)
1/2
3/4
1
1-1/4
1-1/2
=
=
=
=
=
D
F
G
H
J
2
2-1/2
3
4
=
=
=
=
K
L
M
P
Figure Number Matrix
Torques, Cv & Weights
Size Torque (in-lbs) Cv Wt. (Lbs.)
1/2 18
12.5 0.48
3/4 27
28 0.73
1 36
50.9 0.99
1-1/4 54
81 1.39
1-1/2 71
150 2.27
2 106
230 3.41
2-1/2 178
360 7.13
3 230
485 11.97
4 371
768 11.97
Ref.
No.
Description
Material
Qty
340N & 340NF 350N
EPDM
Seals
Viton
Seals
EPDM
Seals
Viton
Seals
1 Body PVC CPVC 1
2 Stem O-ring EPDM
FPM
(Viton®)
EPDM
FPM
(Viton®)
2
3 Stem PVC CPVC 1
4 Ball PVC CPVC 1
5 Seat PTFE 2
6 Carrier O-ring EPDM
FPM
(Viton®)
EPDM
FPM
(Viton®)
1
7 Carrier PVC CPVC 1
8 Union O-ring EPDM
FPM
(Viton®)
EPDM
FPM
(Viton®)
2
9
End Connector/
Flange
PVC CPVC 2
10 Union Nut PVC CPVC 2
11 Handle ABS 1
12 Handle Insert ABS 1
13
Set Ring
(340F only)
PVC CPVC 2
14
Seat O-ring
(up to 2" only)
EPDM
FPM
(Viton®)
EPDM
FPM
(Viton®)
2
Standard Materials Pressure/Temperature
About PVC
Unplasticised Polyvinyl Chloride, or PVC, is the most widely
used of all plastics and commonly used for pressure pipes,
ttings, and valves. It is rigid, suitable for above and below
ground applications. PVC has good chemical resistance and is
odorless and tasteless. It is for use with liquids and gasses with
temperatures +32ºF to +140ºF* (for higher temperatures see
CPVC) at a wide range of operating pressures. Some poorer
quality PVC can leach chemicals into water which can build up
in recirculation systems, however most modern pipe is built to
specic standards (e.g. BS3505/6, ASTM D 1785, ASTM D2241,
DIN 8061/2, KIWA 49, BS4346 PART 1, DIN 8063) to control this.
ASTM D1784 controls the compounds for rigid PVC and CPVC.
About CPVC
Chlorinated Polyvinyl Chloride, or CPVC, has been offering
the process industry superior corrosion resistance, mechanical
strength, and excellent life-cycle economics in a single package.
Conceptually, CPVC is a PVC homopolymer that has been
subjected to a chlorination reaction. It is generally inert to most
mineral acids, bases, salts, and parafnic hydrocarbon solutions.
CPVC is not recommended for use with chlorinated or aromatic
hydrocarbons, esters, or ketones. The upper temperature limit on
CPVC is 200°F*. There is no lower temperature limit on CPVC
and the material will withstand pressure. However, at very cold
temperatures, the material will become brittle and the impact
strength will decline.
* Note: Other materials within valves besides PVC and CPVC can have an affect on the temperature limits of the valve. Temperatures noted
above are for the thermoplastic material alone.
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