ASTM F1041-95
(Guide)Standard Guide for Squeeze-Off of Polyolefin Gas Pressure Pipe and Tubing
Standard Guide for Squeeze-Off of Polyolefin Gas Pressure Pipe and Tubing
SCOPE
1.1 This guide describes general procedures for squeeze-off of polyolefin gas pressure pipe and tubing. Pipe and squeeze tool manufacturers should be requested to supply specific recommendations for squeeze-off with their materials or products.
1.2 Governing codes and project specifications should be consulted. Nothing in this document should be construed as recommending practices or systems at variance with governing codes and project specifications.
1.3 This guide covers squeeze-off of polyolefin pipe and tubing in accordance with Specification D2513.
1.4 Where applicable in this guide, "pipe" shall mean "pipe and tubing".
1.5 The values as stated in inch-pound units are to be regarded as the standard. The values in parentheses are given for information only.
1.6 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
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An American National Standard
Designation: F 1041 – 95
Standard Guide for
Squeeze-Off of Polyolefin Gas Pressure Pipe and Tubing
This standard is issued under the fixed designation F 1041; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Operator Experience
1.1 This guide describes general procedures for squeeze-off 4.1 Each squeeze-off shall be made in accordance with
of polyolefin gas pressure pipe and tubing. Pipe and squeeze written procedures that have been proven by test or experience
tool manufacturers should be requested to supply specific to produce safe squeeze-off. The person actually responsible
recommendations for squeeze-off with their materials or prod- for the squeeze-off shall ensure that detailed procedures are
ucts. developed in conjunction with the owner of the pipe system,
1.2 Governing codes and project specifications should be the manufacturer of the pipe, and the manufacturer of the
consulted. Nothing in this document should be construed as squeeze-off tools. These procedures shall include safety pre-
recommending practices or systems at variance with governing cautions to be followed and are to be issued before actual
codes and project specifications. squeeze-off operations commence.
1.3 This guide covers squeeze-off of polyolefin pipe and 4.2 Skill and knowledge on the part of the operator are
tubing in accordance with Specification D 2513. required to obtain good, safe squeeze-off. This skill and
1.4 Where applicable in this guide, “pipe” shall mean “pipe knowledge shall be obtained by making squeeze-offs in accor-
and tubing”. dance with written procedures under the guidance of experi-
1.5 The values as stated in inch-pound units are to be enced operators.
regarded as the standard. The values in parentheses are given
5. Pipe and Conditions
for information only.
5.1 In order to obtain proper squeeze-off, it is necessary to
1.6 This standard does not purport to address all of the
safety problems, if any, associated with its use. It is the consider the pipe diameter, wall thickness, pipe material,
internal pressure, and environmental conditions. The user shall
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- request the pipe manufacturer to supply specific recommenda-
tions for the squeeze-off of the manufacturer’s product with
bility of regulatory limitations prior to use.
considerations for internal pressure and ambient temperature.
2. Referenced Documents
6. Apparatus
2.1 ASTM Standards:
D 2513 Specification for Thermoplastic Gas Pressure Pipe, 6.1 Squeeze-off Tool—A squeeze-off tool shall have the
following features: proper squeeze bar configuration, force
Tubing, and Fittings
mechanism, over-squeeze protection, and premature release
3. Significance and Use
protection.
3.1 Squeeze-off is a technique used to control the flow of 6.2 Squeeze Bar Configuration—The squeeze bars should
gas through a pipe by the compressing action of a mechanical be of a configuration which compresses the pipe wall to reduce
or hydraulic device. Squeeze-off may be used to reduce the the gas flow but does not damage the pipe. Therefore, squeeze
flow of gas to an acceptable rate and under certain conditions bars are generally configured as circular, flat with rounded
complete stoppage of flow may be attained. edges, or two circular bars side by side. Circular bars are
3.2 Proper squeeze-off procedures result in significant time generally restricted, as follows:
saving in the reduction of gas flow in an emergency and in the
nominal pipe size, minimum diameter
in. in. (mm)
maintenance and operation, or both, of a gas distribution
system. Improper squeeze-off can cause damage to the pipe or
1 3
⁄2 − ⁄4 1.0 (25)
create a safety hazard, or both. 1 − 2 1.25 (32)
3 − 4 1.5 (38)
6 − 8 2.0 (51)
10 − 12 3.0 (76)
This guide is under the jurisdiction of ASTM Committee F–17 on Plastic Piping
14 − 16 3.5 (89)
Systems and is the direct responsibility of Subcommittee F17.60 on Gas.
Current edition approved Oct. 10, 1995. Published December 1995. Originally
6.3 Force Mechanism—The force mechanism shall be ca-
published as F 1041 – 87. Last previous edition F 1041 – 92.
pable of squeezing the pipe to the gap stops or until flow
Annual Book of ASTM Standards, Vol 08.04.
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
F 1041
control has been obtained. G
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