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Polytetrafluoroethylene (PTFE) and perfluoroalkoxy (PFA) lined pipe
Sales Specification: Effective October 27, 2000 · Supersedes:
May 04, 1999 |
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1. PIPE REQUIREMENTS |
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- Pipe 1" through 8" - Thermalok Style
- Pipe is manufactured from electric resistance welded carbon
steel pipe. Pipe conforms to ASTM A587
in 1" - 4" sizes, and A53 Gr.
B in sizes 6" and 8". 1" - 8" pipe conforms dimensionally to
Schedule 40.
- Pipe is also available in stainless steel, type 304 or 316.
Stainless steel pipe conforms to ASTM A312.
- Pipe is vented on the housing by means of small vent holes
(1" - 4" = 3/32"; 6" - 8" = 5/32"), allowing permeant vaports to
escape. Pipe spools up to 18" in length receive (1) vent hole in
the center of the pipe. Pipe spools longer that 18" in length
receive (2) vent holes, one at each end, 180° apart.
- The liner is mechanically locked to the interior of the steel
pipe via the Thermalok process. The PTFE liner is first molded
oversized, such that it will not fit in the pipe housing. The liner
is then drawn through a sizing die into the pipe housing. Next,
the liner and pipe are put in an oven, where the liner is thermally
relaxed into the pipe housing, causing a tight interference fit.
Pipe is available as "factory flared" with locked liner, or "field
flare" (at least one plain end) with movable liner.
- Stainless steel MULTI-AXIS® pipe is available in 1" through 4" sizes.
- Pipe 1" though 8" - Swaged Style
- Pipe is manufactured from electric resistance welded (ERW)
normalized ASTM A513 C-1010 aluminum killed carbon steel tubing
with chemical composition meeting ASTM A587,
a diamond picked
spiral groove interior and is limited with polytetrafluoroethylene
(PTFE) or perfluoroalkoxy (PFA).
- The diamond picked interior provides a path for permeants to
escape at the flange face venting collar.
- The liner is mechanically locked to the interior of the steel
tubing by swaging the steel tubing to nominal pipe size (NPS)
dimensions.
- Finished steel pipe dimensions 1" through 6" are Schedule 40.
- Finished steel pipe dimensions 8" are Schedule 30.
- MULTI-AXIS pipe is available in 1" through 4" size.
- Pipe 10" and 12" - Full Vacuum
- Pipe is manufactured from ERW ASTM A53,
Grade B carbon steel
with a smooth interior and is lined with PTFE by the Thermalok
process. The metal pipe is Schedule 30 in 10" size, and Schedule
20 in 12" size.
- Pipe is also available in stainless steel type 304 or 316.
Stainless steel pipe conforms to ASTM A312.
- Pipe is vented on the housing by means of 5/32" dia. vent
holes, allowing permeant vaports to escape. Pipe spools up to 18"
in length receive (1) vent hole in the center of pipe. Pipe
spools longer than 18" in length receive (2) vent holes, one at
each end, 180° apart.
- 10" and 12" pipe with the "Full Vacuum" designation is rated
for full vacuum at 450°F.
- Pipe 10" and 12" - Non-Vacuum
- Pipe is manufactured from ERW ASTM A53,
Grade B, Type E carbon
steel with a smooth interior and is lined with PTFE by a reverse
swaging process.
- Four 1/8" diameter vent holes equally spaced are located 1-1/2"
from each end of the pipe. On pipe shorter than 18",
only one end has vent holes.
- Finished steel pipe dimensions are Schedule 30.
- Minimum lengths available are:
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| NPS |
Factory Fabricated Lengths, in. Thermalok |
Swaged |
Field Fabricated Lengths, in. Thermalok or Swaged |
| 1" |
3 |
2-7/16 |
7 |
| 1-1/2" |
3-3/8 |
2-11/16 |
7 |
| 2" |
3-1/2 |
3-1/16 |
7 |
| 2-1/2" |
N/A |
3-5/16 |
8 |
| 3" |
4 |
3-7/16 |
8 |
| 4" |
4-3/8 |
3-11/16 |
8 |
| 6" |
5-1/2 |
4-1/8 |
10 |
| 8" |
6-1/2 |
4-1/2 |
12 |
| 10" |
8-1/2 |
6 (non-vacuum) |
12 |
| 12" |
8-1/2 |
7-1/2 (non-vacuum) |
12 |
(1)Capacity of field threaders, such as Wheeler Rex or equal. |
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F. |
PTFE and PFA plain end pipe is a minimum of 20 feet 6 inches for
20-foot spools. For 1" and 6" through 12" PTFE pipe and 1" PFA
pipe, the maximum finished pipe length is 20 feet + or -1/8" at
75°F. The maximum finished pipe length for PFA lined pipe 1 1/2"
and 2" and PTFE lined pipe 1 1/2" through 4" is 40 feet + or -1/8"
at 75°F. |
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2. FLANGE REQUIREMENTS: |
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Rotatable Flange Option for Swaged Pipe
- Pipe 1" through 8" - Thermalok Style
- Standard flange for pipe is rotating lap joint (van stone) on
both ends. Lap is formed by a metal flaring process, and is not a
welded stub-end.
- Slip-on, weld-neck, and socket-weld flanges are available. This
is generally a cost-addition over the standard configuration (rotating
both ends).
- Standard rotating flanges are ductile iron conforming to ASTM A395.
All flanges are available in carbon steel conforming to
to ASTM A105
or stainless steel (304 or 316) conforming to
ASTM A182.
- Pipe 1" through 8" - Swaged Style
- Pipe has chamfered threaded flanges or is available with a
rotatable flange assembly.
- Pipe flanges are forged steel. Class 150 and 300 forged steel
flanges conform to ASTM A105 with drilling per ANSI B16.5.
- Stub ends for rotatable flange assemblies are ASTM A105 or
ASTM A516 Grade 70.
- Pipe lined with PTFE and PFA have flare formed sealing
surfaces in conjunction with a perforated nickel plated steel
venting collar.
- Pipe 10" and 12" - Full Vacuum
- Standard flange for pipe is rotating lap joint (van stone) on
both ends. Lap is formed by a metal flaring process, and is not
a welded stub-end.
- Slip-on, weld-neck, and socket-weld flanges are available.
This is generally a cost-addition over the standard configuration
(rotating both ends).
- Standard rotating flanges are ductile iron conforming to ASTM A395.
All flanges are available in carbon steel conforming to
ASTM A105.
- Pipe 10" and 12" - Non-Vacuum.
- Pipe is flared steel with lap joint flanges.
- Pipe flanges are Class 150 forged steel and conform to ASTM A105
with drilling per ANSI B16.5.
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3. LINER REQUIREMENTS |
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- Resin is PTFE or PFA conforming to the requirements of ASTM F1545.
- Standard liners are unpigmented. PTFE is white in color; PFA is
clear.
- The nominal liner thicknesses are:
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Size |
PTFE Liner Thickness In. |
PFA Liner Thickness In. |
| (NPS) |
Thermalok |
Swaged |
| 1" |
0.130 |
0.130 |
0.113(S) |
| 1-1/2" |
0.150 |
0.130 |
0.114(S) |
| 2" |
0.160 |
0.130 |
0.112(S) |
| 3" |
0.160 |
0.130 |
0.130(S) |
| 4" |
0.160 |
0.160 |
0.150(S) |
| 6" |
0.275 |
0.225 |
0.145(T) |
| 8" |
0.310 |
0.300 |
0.140(T) |
| 10" |
0.320 (FV) |
0.200 (NV) |
N/A |
| 12" |
0.425 (FV) |
0.200 (NV) |
N/A |
NV = Non-Vacuum FV = Full Vacuum (S) = Swaged Pipe (T) = Thermalok Pipe |
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D. |
The minimum outside diameter of the plastic sealing surface on pipe
per ASTM F1545 is:
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Size (NPS) |
Minimum Sealing (Inch) |
Diameter (Millimeters) |
| 1" |
1-7/8" |
48 |
| 1-1/2" |
2-11/16" |
68 |
| 2" |
3-7/16" |
87 |
| 3" |
4-5/8" |
117 |
| 4" |
5-15/16" |
151 |
| 6" |
8" |
203 |
| 8" |
10-1/16" |
256 |
| 10" |
12-1/4" |
311 |
| 12" |
14-3/8" |
365 |
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E. |
The minimum liner flange face thickness is 0.100" (2.54 mm). |
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4. OPERATING REQUIREMENTS: |
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Note: |
Operating temperature limitations may be encountered depending
upon specific chemical environments. |
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B. |
Pressure:
- For Class 150, the maximum allowable working pressure equals
the corresponding ANSI pressure-temperature rating per the
designated metallurgy.
- The maximum allowable working pressure for Class 300 steel
(accounting for the plastic raised face) is:
-20°F to 100°F = 475 psi
200°F = 460 psi
300°F = 440 psi
450°F = 400 psi
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C. |
Vacuum:
- 1" through 8" pipe has a full vacuum rating to 450°F.
- Pipe 10" and 12" is available in either "Full Vacuum"
(up to 450°F) or "Non-Vacuum" styles.
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5. STORAGE AND HANDLING REQUIREMENTS: |
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- Avoid dropping or impacting pipe with heavy objects or storing
near high traffic areas.
- Uninstalled lined pipe should not be stored or handled at
temperatures below 0°F (-18°C).
- The center of gravity for pipe can be very deceptive. Use extra
care in handling, transfer, and storage of the product to avoid
sudden load shifting causing possible personal injury and/or product
damage.
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6. PAINT: |
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Paint is a two-component primer,formulated on proprietary polymer technology, which provides rapid cure
and overcoating even under low temperature conditions. The maximum
external temperature rating for the paint is 212°F (100°C).
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7. INSPECTION AND QUALITY CONTROL: |
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- 1" - 8" swaged-style and 10" and 12" non-vacuum pipe passes a
15,000 volt minimum electrostatic spark test to ensure integrity of
the plastic liner. 1" - 8" Thermalok pipe and 10" and 12" Full Vacuum
pipe passes either of the following test: a 12,500 volt electrostatic
test or a 425 psig hydrostatic test.
- All parts pass visual inspection.
- The sealing surface of the liner is free of defects that would
impair sealing effectiveness.
- Wooden end protectors are used to protect the plastic faces for
flanged pipe. Plastic end caps are used to protect the plastic liner
for plain end pipe. End protectors should stay in place until
immediately prior to installation.
- Flanged pipe is labeled with a sticker located on the wooden end
protectors which identifies the plastic liner type and the flange
material. Plain end pipe is labeled with a sticker located on the pipe
which identifies the plastic liner type.
- Band coding:
- Pipe spool liner material is indicated by a color band as
follows:
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Liner Material
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Band/Lettering
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Imprint
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| Thermalok PTFE |
Natural/Black |
RESISTOFLEX-M-PTFE-ASTM-F1545 |
| PTFE 10", 12" FV |
Natural/Black |
RESISTOFLEX-M-PTFE-ASTM-F1545 |
| Swaged PTFE |
Natural/Black |
RESISTOFLEX-BC-PTFE-ASTM-F1545 |
| PTFE 10", 12" NV |
Red/Black |
RESISTOFLEX-BC-PTFE NO VAC-ASTM-F1545 |
| PFA |
Brown/White |
RESISTOFLEX-BC-PFA-ASTM-F1545 |
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*FV = Full Vacuum NV = Non-Vacuum |
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G. |
Swaged PTFE, PFA, and 10" and 12" non-vacuum products are impression
marked for material traceability. |
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REFERENCES:
For more information please contact us.
THIS PRODUCT IS SHIPPED IN COMPLIANCE WITH APPLICABLE LAWS AND
REGULATIONS REGARDING CLASSIFICATION, PACKAGING, SHIPPING AND
LABELING. |
"This page is a machine translation of the source page, which is written in
English. This translation is intended to provide a general idea of the
page's content, and is not guaranteed for accuracy."
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