Page 1
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)
• Certied 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 Modied for Actuator Installation
* Note that the valve has a preferred ow direction
indicated by the embossed arrow on the body. The
preferred ow direction orients the carrier upstream
so that downstream piping can be removed with valve
closed.
340NF
340N
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 Classication 12454 per
ASTM D1784 (formerly Type I, Grade 1)
• CPVC: Cell Classication 23447
per ASTM D1784 (formerly Type IV,
Grade 1)
350N
Options
FNW offers many options and modications 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 specic application needs.
www.fnw.com
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NOTE: 2-1/2” to 4” valves have
a symmetrical single-piece ABS
tee-handle
Dimensions (inches) Figure 340N and 350N
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.
2
Phone: 503-287-8383 ~ Fax: 503-281-9677 ~ www.FNW.com
Page 3
NOTE: 2-1/2” to 4” valves have
a symmetrical single-piece ABS
tee-handle
Dimensions (inches) Figure 340NF
Size ØD E L L1 ØB ØG 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.
About PVC
Unplasticised Polyvinyl Chloride, or PVC, is the most widely
used of all plastics and commonly used for pressure pipes,
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
DIN 8061/2, KIWA 49, BS4346 PART 1, DIN 8063) to control this.
ASTM D1784 controls the compounds for rigid PVC and CPVC.
* 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.
Phone: 503-287-8383 ~ Fax: 503-281-9677 ~ www.FNW.com
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
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.
About CPVC
3
Page 4
Standard Materials Pressure/Temperature
Material
Ref.
No.
Description
1
2 Stem O-ring EPDM
340N & 340NF 350N
EPDM
Seals
Viton
Seals
EPDM
Seals
PVC CPVC 1
FPM
(Viton®)
EPDM
Viton
Seals
FPM
(Viton®)
3 Stem PVC CPVC 1
4 Ball PVC CPVC 1
5 Seat PTFE 2
Carrier O-ring EPDM
FPM
(Viton®)
EPDM
FPM
(Viton®)
Carrier PVC CPVC 1
Union O-ring EPDM
9
Flange
FPM
(Viton®)
EPDM
PVC CPVC 2
FPM
(Viton®)
10 Union Nut PVC CPVC 2
11
12
13
14
Set Ring
(340F only)
Seat O-ring
(up to 2” only)
PVC CPVC 2
EPDM
FPM
(Viton®)
EPDM
FPM
(Viton®)
Qty
2
1
2
1
1
2
Torques, Cv, & Weights
Size Torque (in-lbs) Cv
1/2
3/4
1
1-1/4 54
1-1/2
2
2-1/2
3 230
4
12.5
50.9 0.99
150
230 3.41
Wt. (Lbs.)
1.39
Figure Number Matrix
F N W 340N E G
BODY TYPE SIZE CODES
340N
=
340NF
=
350N
=
Replacement O Rings (Sold Separately)
F N W 340TUBVOR G
340N
=
340NF
=
350N
=
* EPDM O Rings are DC stocked; Viton are special order
EV==EPDM
FPM (VITON®)
1/2
=
3/4
=
1
=
1-1/4
=
1-1/2
=
SIZE CODES
1/2
=
3/4
=
1
=
1-1/4
=
1-1/2
=
D
F
2-1/2
2
=
=
3
==M
4
P
J
D
F
2-1/2
2
=
=
3
==M
4
P
J
DOC: FNWTPBV2011 Ver. 5/16
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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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