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ASTM D3089-97

(Test Method)

Standard Practice for Determining the A-D Dimension of Aerosol Valve Dip Tubes

Standard Practice for Determining the A-D Dimension of Aerosol Valve Dip Tubes

SCOPE
1.1 This practice covers the rapid determination of the A-D dimension defined as the centerline dimension from the top plane of the valve mounting cup curl to the far end of the dip tube. See Fig. 1.  
1.2 This practice is limited to valves with 1 in. (25.4mm) mounting cups.

General Information

Status
Historical
Publication Date
09-Sep-1997
ICS
55.130 - Aerosol containers
Technical Committee
D10 - Packaging
Drafting Committee
D10.33 - Aerosol Products
Current Stage
Ref Project

Relations

Replaced By
ASTM D3089-97(2003) - Standard Practice for Determining the A-D Dimension of Aerosol Valve Dip Tubes
Effective Date
10-Sep-1997

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ASTM D3089-97 - Standard Practice for Determining the A-D Dimension of Aerosol Valve Dip TubesASTM D3089-97 - Standard Practice for Determining the A-D Dimension of Aerosol Valve Dip Tubes
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ASTM D3089-97 - Standard Practice for Determining the A-D Dimension of Aerosol Valve Dip Tubes
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 3089 – 97
Standard Practice for
Determining the A-D Dimension of Aerosol Valve Dip Tubes
This standard is issued under the fixed designation D 3089; 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
1.1 This practice covers the rapid determination of the A-D
dimension defined as the centerline dimension from the top
plane of the valve mounting cup curl to the far end of the dip
tube. See Fig. 1.
1.2 This practice is limited to valves with 1-in. (25.4-mm)
mounting cups.
2. Significance and Use
2.1 Using dip tubes of the correct length is helpful by
enabling the user to discharge essentially all the product from
the dispenser, preventing the tube from becoming jammed into
an incorrect position as a result of gassing, preventing the
(non-dimpled) valve cup from excessively protruding from the
can plug and perhaps causing production problems at the
crimper or gasser/crimper, and preventing the tube from
bottoming on the flat base of some aluminum cans in such a
way that a seal is made that will act to limit or stop the entry
of product into the tube when the valve is actuated. FIG. 1 Aerosol Valve “A-D” Dimension
2.2 Dip tubes that extend fully to the bottom of the
dispenser, without excessive distortion, can also aid in retain-
3. Apparatus
ing their connection to the valve body tailpiece, which may be
3.1 Gage for Measuring AD dimension, Figs. 2-6 or
important if the aerosol content exerts a very significant
equivalent—This device consists of three machined parts. In
swelling action upon the dip tube plastic.
addition, a scale graduated in ⁄32 in. (ruler) is glued to the scale
2.3 The choice of A-D dimension is influenced by a number
block, and a foam pad base may be added to achieve nonslip
of factors. These factors include:
characteristics.
2.3.1 Tube curvature, which may vary considerably between
tubes.
4. Calibration and Standardization
2.3.2 Variation of valve cup and valve cup gasket thickness.
4.1 Ensure that the reference plane against which the top of
2.3.3 Elevation or suppression of the valve pedestal (thus
the valve cup rests is at zero on the scale.
top end of the dip tube) upon crimping.
2.3.4 Elevation of valve pedestal during hot-tanking, only
partly diminished upon subsequent cooling.
2.3.5 Swelling (or shrinking) action of the product on the
dip tube.
This practice is under the jurisdiction of ASTM Committee D10 on Packagin-
gand is the direct responsibility of Subcommittee D10.33 on Mechanical Dispens-
ers. This practice was originally developed by the Chemical Specialties Manufac-
turers Assn. and is described in The Aerosol Handbook (Second Edition), Montford
A. Johnson, 167 and 182, (1982). Wayne E. Dorland & Co. (Mendham, N.J.)
Current edition approved Sept. 10, 1997. Published March 1998. Originally
published as D 3089 – 72. Last previous edition D 3089 – 89. FIG. 2 Aerosol Valve Diptube Measurement Gage
Copyright © ASTM Internati
...

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