ASTM F845-96

Standard Specification for Plastic Insert Fittings for Polybutylene (PB) Tubing (Withdrawn 2003)

SCOPE
1.1 This specification covers plastic insert fittings for polybutylene (PB) plastic tubing. These fittings are intended for use in 100-psi (6.9-MPa) cold- and hot-water distribution systems operating at temperatures up to and including 180°F (82°C). Included are the requirements for materials, workmanship, burst pressure, sustained pressure, temperature cycling tests, and markings to be used on the fittings.  
1.2 The values stated in inch-pound units are to be regarded as the standard. The SI values stated in parentheses are provided for information purposes.  
1.3 The following safety hazards caveat pertains only to the test method portion, Section 7, of this specification: This standard does not purport to address all of the safety concerns, 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.

General Information

• Status: Withdrawn
• Publication Date: 09-Sep-1996
• Withdrawal Date: 26-Jun-2003
• ICS: 23.040.45 - Plastics fittings
• Technical Committee: F17 - Plastic Piping Systems
• Drafting Committee: F17.10 - Fittings

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
An American National Standard
Designation: F 845 – 96
Standard Specification for
Plastic Insert Fittings for Polybutylene (PB) Tubing
This standard is issued under the fixed designation F 845; 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 D 4181 Specification forAcetal (POM) Molding and Extru-
sion Materials
1.1 This specification covers plastic insert fittings for poly-
F 412 Terminology Relating to Plastic Piping Systems
butylene (PB) plastic tubing.These fittings are intended for use
F 1498 Specification for Taper Pipe Threads 60° for Ther-
in 100-psi (6.9-MPa) cold- and hot-water distribution systems
moplastic Pipe and Fittings
operating at temperatures up to and including 180°F (82°C).
2.2 Federal Standard:
Included are the requirements for materials, workmanship,
Fed. Std. No. 123 Marking for Shipments (CivilAgencies)
burst pressure, sustained pressure, temperature cycling tests,
2.3 Military Standard:
and markings to be used on the fittings.
MIL-STD-129 Marking for Shipment and Storage
1.2 The values stated in inch-pound units are to be regarded
2.4 National Sanitation Foundation Standard:
as the standard. The SI values stated in parentheses are
Standard No. 14 for Plastic Piping Components and Related
provided for information purposes.
Materials
1.3 The following safety hazards caveat pertains only to the
Standard No. 61 for Drinking Water System Components—
test method portion, Section 7, of this specification: This
Health Effects
standarddoesnotpurporttoaddressallofthesafetyconcerns,
ifany,associatedwithitsuse.Itistheresponsibilityoftheuser
3. Terminology
of this standard to establish appropriate safety and health
3.1 Definitions are in accordance with Terminology F 412
practices and determine the applicability of regulatory limita-
and abbreviations are in accordance withTerminology D 1600,
tions prior to use.
unless otherwise specified.
2. Referenced Documents
4. Classification
2.1 ASTM Standards:
2 4.1 Thisspecificationcoversoneclassoffittingssuitablefor
D 618 Practice for Conditioning Plastics for Testing
use with PB tubing that meet the requirements of applicable
D 1598 Test Method for Time-to-Failure of Plastic Pipe
3 ASTM specifications. At the present time, this is Specification
Under Constant Internal Pressure
D 3309.
D 1599 TestMethodforShort-TimeHydraulicFailurePres-
sure of Plastic Pipe, Tubing, and Fittings
5. Materials
D 1600 Terminology for Abbreviated Terms Relating to
5.1 The fittings shall be made from one of the following
Plastics
plastics:
D 1784 Specification for Rigid Poly(Vinyl Chloride) (PVC)
5.1.1 Acetal Plastics, meeting the requirements of Class 1,
Compounds and Chlorinated Poly(Vinyl Chloride)
2 Grade 1 or 2 in Table POM of Specification D 4181.
(CPVC) Compounds
5.1.2 Chlorinated Poly(Vinyl Chloride) (CPVC), meeting
D 2122 Test Method for Determining Dimensions of Ther-
3 the requirements of cell classification 23447-B in Specification
moplastic Pipe and Fittings
D 1784.
D 3309 Specification for Polybutylene (PB) Plastic Hot-
3 5.2 Rework Material—Clean reworked material generated
Water Distribution Systems
fromthefittingmanufacturer’sownproductionmaybeusedby
the same manufacturer provided that the types specified in 5.1
This specification is under the jurisdiction ofASTM Committee F-17 on Plastic
Piping Systems and is the direct responsibility of Subcommittee F17.10 on Fittings. Annual Book of ASTM Standards, Vol 08.02.
Current edition approved Sept. 10, 1996. Published November 1996. Originally AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
published as F 845 – 84. Last previous edition F 845 – 95. Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
2 6
Annual Book of ASTM Standards, Vol 08.01. Available from the National Sanitation Foundation, P.O. Box 1468,AnnArbor,
Annual Book of ASTM Standards, Vol 08.04. MI 48106.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
F 845–96
TABLE 2 Dimensions of Insert Adapters with Pipe Thread Ends,
are not mixed with one another and that the fittings produced
in. (mm)
meet all the requirements of this specification.
Length of Thread, min, in.
Nominal Tube Size,
(mm)
Insert End and Pipe
6. Requirements
Thread
Male S Female T
6.1 Workmanship—The fittings shall be made from com-
⁄8 0.53 (13.46) 0.475 (12.07)
pounds that are homogeneous throughout and essentially
⁄2 0.53 (13.46) 0.64 (16.16)
uniform in color, opacity, density, and other properties. The
⁄4 0.55 (13.97) 0.65 (16.51)
inside and outside surfaces shall be semi-matte or glossy in
appearance (depending on the type of plastic) and free of
chalking, sticky, or tacky material. The fitting walls shall be
NOTE 1—The choice between copper or aluminum for the crimp ring
free of cracks, holes, blisters, voids, foreign inclusion, or other
should be made with consideration of the environmental conditions of the
defects that are visible to the naked eye and that may affect the
application. The fittings manufacturer may be consulted for recommen-
wall integrity. dations.
NOTE 2—In the crimping operation, the fittings manufacturer’s instruc-
6.2 Dimensions and Tolerances—The dimensions and tol-
tions shall be followed.The crimping tool shall be adjusted before starting
erances shall be as shown in Table 1 and Table 2 when
the job, at the start of each day, and when recommended by the
measured in accordance with 7.4.
manufacturer. The crimping procedure shall be as follows: slide the ring
6.2.1 Alignment of all openings of fittings shall be within ⁄4
onto the tubing, insert the fitting tightly onto the tubing and position the
in. (6.4 mm)/ft (30 cm). 1 1
ring ⁄8 in. (3.2 mm) to ⁄4 in. (6.4 mm) from fitting shoulder and parallel
6.2.2 Fittings Not Illustrated—All fittings not illustrated in
tothetubing.Thecrimpingtool’sjawsshallbecenteredoverthering.The
Table 1 shall have insert ends in accordance with Table 1 or crimp tool shall be closed completely so as to make a crimp while the tool
is at 90° to the tubing. The rings shall not be double crimped. Each crimp
threaded ends in accordance with Table 2.
shall be checked with the caliper gage provided by the manufacturer.
6.2.3 Threads—For all fittings having taper pipe threads,
threads shall conform to Specification F 1498 and be gaged in 6.3 Hydrostatic Burst—Fittings with the dimensions and
accordance with 7.9. tolerances noted in Table 1 and Table 2 and tubing manufac-
6.2.4 CrimpJoints—Insert fittings shall be jointed to the PB tured in accordance with Specification D 3309 will be tested as
tubing by metallic crimp rings. The crimp ring dimensions and an assembly and shall meet the minimum hydrostatic burst
tolerances shall be in accordance withTable 3.The crimp rings requirements shown in Table 5 when tested in accordance with
shall be copper with a minimum hardness of 35 and maximum 7.5.
hardness of 45 on the Rockwell 15T scale or aluminum with a 6.4 Hydrostatic Sustained Pressure Strength—Tubing and
minimumhardnessof20andamaximumhardnessof54onthe fittings (tested as assemblies) shall meet the hydrostatic sus-
Rockwell 15T scale (see Note 2). The crimp rings shall be free tained pressure strength requirements shown in Table 6 when
of burrs and sharp edges. Crimping tool and gage, supplied by tested in accordance with 7.6.
the manufacturer, shall be used in crimping the ring to affix the 6.5 Thermocycling—Fittings and tubing assembled using
insert fitting. The tool shall be adjusted in accordance with the the manufacturer’s recommended procedure shall not leak or
manufacturer’s instructions (see Note 2). The tolerances for separate when thermocycled 1000 times between the tempera-
dimensions and out-of-roundness on the ring after it has been tures of 60°F (16°C) and 180°F (82°C) when tested in
crimped shall be in accordance with Table 4. These tolerances accordance with 7.7.
are required to have an adequate seal and pull-out strength and 6.6 Excessive Temperature and Pressure Capability—In the
not over-stress the tubing or fitting. event of a heating system malfunction, polybutylene tubing
TABLE 1 Dimensions of Insert End, in. (mm)
Outside Diameter
Nominal Circumferential Inside
Insert Length, Thickness,
Tube Z Parallel Ridges, Diameter, X,
P, min T, min
A,B
Size min min
max min
⁄8 0.625 (15.88) 0.385 (9.78) 0.370 (9.40) 3 0.049 (1.24) 0.232 (5.89)
⁄2 0.720 (18.29) 0.505 (12.83) 0.495 (12.57) 3 0.049 (1.24) 0.355 (9.02)
⁄4 0.720 (18.29) 0.725 (18.42) 0.710 (18.03) 3 0.070 (1.78) 0.535 (13.59)
A
Minimum circumferential ridge height is 0.008 in. (0.20 mm).
B
The number and spacing of the ridges on the insert shall be located to ensure that the crimp ring will be crimped over at least one ridge when installed as stated in
Note 3.
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn. Contact ASTM
International (www.astm.org) for the latest information.
F 845–96
A,B,C
TABLE 3 Crimp Ring Dimensions
Nominal Tube Average Outside Diameter, Average Wall Thickness,
Width, in. (mm)
D D
Size in. (mm) in. (mm)
⁄8 0.625 +0.0025 15.88 +0.0635 0.049 +0.0035 1.23 +0.0889 0.350 (8.89) − 0.385 (9.78)
S D S D
−0.0025 −0.0635 −0.0035 −0.0889
⁄2 0.750 +0.0025 19.05 +0.0635 0.049 +0.0035 1.23 +0.0889 0.350 (8.89) − 0.385 (9.78)
S D S D
−0.0025 −0.0635 −0.0035† −0.0889†
⁄4 1.000 +0.0025 25.4 +0.0635 0.049 +0.0035† 1.23 +0.0889 0.350 (8.89) − 0.385 (9.78)
S D S D
−0.0025 −0.0635 −0.0035 −0.0889
A
All dimensions shall be measured with appropriate micrometers, such as pin or ball micrometers for wall thickness and outside diameter micrometers with flat anvils
to measure outside diameter and width of rings.
B
Stamping and cutting may deform the ring and change the dimensions.
C
The maximum out-of-roundness of the crimp ring shall not inhibit assembling with the fitting and tubing. Its dimensions after crimping shall comply with Table 4.
D
The average measurement is obtained from measurements taken at least two different circumferential positions which are equally spaced around the circumference.
TABLE 4 Dimensions of Ring After Crimping
7.4 Dimensions—Use any randomly selected fitting or fit-
Nominal Tube Size Insert Final Crimped Outside tings to determine dimensions. Make measurements in accor-
A,B
End and Pipe Thread Diameter, in. (mm)
dance with Test Method D 2122. Determine the diameters by
min max
making measurements at four points spaced at approximately
⁄8 0.580 (14.7) 0.595 (15.1)
90° apart
...