ASTM E675-94(1998)

Standard Specification for Interchangeable Taper-Ground Stopcocks And Stoppers

SCOPE
1.1 The specification provides standard dimensional requirements for obtaining, within practical limits, interchangeability in stopcocks and stoppers for ordinary laboratory and industrial applications. It covers dimensional interchangeability of the ground surfaces only and does not involve design characteristics of the item except where specified.  Note 1-The dimensions pertaining to stopcocks and stoppers were taken from the Commercial Standard CS 21 of the U.S. Department of Commerce. Note 2-Although glass is the most commonly used material for stopcocks and stoppers, other materials may be used as specified. Stopcocks and stoppers constructed from glass should conform to Specifications E438 and E671.

General Information

• Status: Historical
• Publication Date: 09-Oct-1998
• ICS: 71.040.20 - Laboratory ware and related apparatus
• Technical Committee: E41 - Laboratory Apparatus
• Drafting Committee: E41.01 - Laboratory Ware and Supplies

Relations

• Replaced By: ASTM E675-02 - Standard Specification for Interchangeable Taper-Ground Stopcocks And Stoppers
• Effective Date: 10-May-2002

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NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn.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.
Designation: E 675 – 94 (Reapproved 1998)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Interchangeable Taper-Ground Stopcocks And Stoppers
This standard is issued under the fixed designation E 675; 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 The specification provides standard dimensional re-
quirements for obtaining, within practical limits, interchange-
ability in stopcocks and stoppers for ordinary laboratory and
industrial applications. It covers dimensional interchangeabil-
ity of the ground surfaces only and does not involve design
characteristics of the item except where specified.
NOTE 1—The dimensions pertaining to stopcocks and stoppers were
taken from the Commercial Standard CS 21 of the U.S. Department of
Commerce.
NOTE 2—Although glass is the most commonly used material for
stopcocks and stoppers, other materials may be used as specified.
Stopcocks and stoppers constructed from glass should conform to Speci-
fications E 438 and E 671.
2. Referenced Documents
2.1 ASTM Standards:
E 438 Specification for Glasses in Laboratory Apparatus
E 671 Specification for Maximum Permissible Thermal Re-
2 FIG. 1 Stopcock
sidual Stress in Annealed Glass Laboratory Apparatus
E 920 Specification for Commercially Packaged Laboratory
Table 3. Overall diameter of ring gage shall be approximately
Apparatus
twice the diameter of the bore at the reference line in the
E 921 Practice for Export Packaged Laboratory Apparatus
window, but not less than 25 mm.
E 1133 Practice for Performance Testing of Packaged Labo-
3.3.1 Plug Gage—Plug shall have two short axial lines
ratory Apparatus United States Government Procurement
1806 0.5° apart intersecting the reference line for checking
E 1157 Specification for Sampling and Testing Reusable
location of bore hole. In addition to the two axial lines 180°
Laboratory Glassware
apart intersecting the reference line on the 4 and 6-mm plugs,
2.2 U.S. Department of Commerce Standard:
two additional axial lines shall be provided on each of these
CS 21 Interchangeable Taper-Ground Joints, Stopcocks,
plugs for checking the location of the bore hole of T-bore and
Stoppers, and Spherical-Ground Joints
120-deg bore stopcocks. These two additional axial lines shall
be placed 90 and 120° (6 0.5°) from one of the first two axial
3. Requirements for Single Straight-Bore Taper-Ground
lines.
Stopcocks
TABLE 1 Single Straight-Bore Stopcocks
3.1 The designations and dimensions for single straight-
Diameter of Plug Length of Diameter of
bore stopcocks shall be as shown in Fig. 1 and Table 1.
Stopcock at Center-Line Shell, 60.5 Bore Hole in
3.2 Taper—All straight-bore stopcocks shall have a taper of
Designation of Bore, mm mm Plug, mm
1 6 0.006 mm of diameter per 10 mm of length (1 to 10).
D E F
3.3 Master Gages—Dimensions and tolerances for master
A
1-M 720 1
gages shall be as shown in Fig. 2 and Fig. 3, and Table 2 and 112 30 1 ⁄2
1 ⁄2 12 30 1
212 30 2
317 40 3
This specification is under the jurisdiction of ASTM Committee E-41 on
417 40 4
Laboratory Apparatus and is the direct responsibility of Subcommittee E41.01 on
520 44 5
Glass and Plastic Apparatus.
620 44 6
Current edition approved Feb. 15, 1994. Published March 1994. Originally
825 52 8
published as E 675 – 79. Last previous edition E 675 – 79 (1989).
2 10 35 56 10
Annual Book of ASTM Standards, Vol 14.04.
A
Discontinued 1979—U.S. Department of Commerce, Washington, DC 20234. Micro size.
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.¬
E 675
TABLE 2 Master Plug Gages for Single Straight-Bore Stopcocks
Distance from
Length of Tapered Diameter at Large End of
Stopcock Portion +2.0 mm, Gaging Point Tapered Portion
Designation −0 mm 60.003 mm to Gaging
EE DD Point, mm
NN
A
1-M 32 7 20
142 12 25
1 ⁄2 42 12 25
242 12 25
352 17 30
452 17 30
556 20 32
656 20 32
864 25 36
10 68 35 38
A
Micro size.
TABLE 3 Master Ring Gages for Single Straight-Bore Stopcocks
Length of Inside Diameter Distance from
Stopcock Ring, +0.2 at Gaging Point, Top to Gaging
Designation mm, −0 mm 60.003 mm Point, mm
EE DD NN
FIG. 2 Master Plug Gage for Single Straight-Bore Stopcocks
A
1-M 20 7 10
1 301215
1 ⁄2 30 12 15
2 301215
3 401720
4 401720
5 442022
6 442022
8 522526
10 56 35 28
A
Micro size.
4. Requirements for Single Oblique-Bore Stopcocks
4.1 Design, dimensions, and tolerances for 1, 1 ⁄2,2,3,and
4-mm oblique-bore stopcocks shall be as shown in Fig. 4 and
Table 4.
4.2 Taper—All single oblique-bore stopcocks shall have a
taper of 1 6 0.006 mm of diameter per 10 mm of length (1 to
10).
4.3 Master Gages—The dimensions and tolerances for mas-
ter gages shall be as shown in Fig. 5 and Fig. 6 and Table 5 and
Table 6. The overall diameter of the ring gage shall be
approximately twice the diameter of the bore at its midpoint,
but not less than 25 mm.
4.3.1 Plug Gage—The upper circumferential reference line
shall be the gaging point. Each reference line shall have a short
FIG. 3 Master Ring Gage for Single Straight-Bore Stopcocks
axial line intersecting it, the two axial lines being on opposite
3.3.2 Ring Gage—The central milled recess, or window, sides of the plug and in the same plane running through the axis
shall be placed approximately midway between the ends of the (180 6 0.5° apart) for checking location of bore holes.
ring gage. Width of recess measured parallel with the axis shall 4.3.2 Ring Gage—The width of the milled recesses, or
be approximately one fourth of the length of the ring, and the windows, measured parallel with the axis shall be approxi-
width of the opening at the inner surface of ring, measured mately one fourth of the length of the ring, and the width of the
perpendicular to the axis, shall not exceed one fourth of the
opening at the inner surface of ring, measured perpendicular to
length of the ring. Reference line in recess shall be placed the axis, shall not exceed one fourth of the length of the ring.
approximately midway between ends of ring gage. The recesses shall be so placed that the reference lines fall
3.3.3 Fit of Product in Working Gages—The product (both approximately midway in the recess.
inner and outer members) shall fit the corresponding working 4.3.3 Fit of Product in Working Gages—The product (both
gages so that the centerline through the bore corresponds with inner and outer members) shall fit the corresponding working
the reference line on the gage within 6 0.3 mm for 1, 1 ⁄2, and gages so that the centerlines through the openings correspond
2-mm bores;6 0.5 mm for 3 and 4-mm bores; and 6 1.0 mm with the reference lines on the gages within 6 0.3 mm for 1,
for 5-mm and larger bores. 1 ⁄2, and 2-mm bores, and 6 0.5 mm for 3 and 4-mm bores.
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.¬
E 675
FIG. 4 Single Oblique-Bore Stopcock
TABLE 4 Single Oblique-Bore Stopcock
Distance from Large End
Diameter of Plug at Length of Shell, Diameter of Bore Distance between
Stopcock of Shell to Gaging
Gaging Point, mm 60.5 mm in Plug, mm Bore Holes,
Designation Point, 60.5 mm
A
D E F P
N
1 12.60 40 1 14.0 12
1 1
1 ⁄2 12.60 40 1 ⁄2 14.0 12
2 12.60 40 2 14.0 12
3 17.35 50 3 16.5 17
4 17.35 50 4 16.5 17
A
See 3.3.3.
FIG. 5 Master Plug Gage for Single Oblique-Bore Stopcocks
FIG. 6 Master Ring Gage for Single Oblique-Bore Stopcocks
5. Requirements for Double Oblique-Bore (Three-Way)
5.2 Taper—All double oblique-bore stopcocks shall have a
Stopcocks
taper of 1 6 0.006 mm of diameter per 10 mm of length (1 to
5.1 Design, dimensions, and tolerances for 1, 1 ⁄2,2,3,and 10).
4-mm, three-way bore stopcocks shall be as shown in Fig. 7 5.3 Master Gages—Dimensions and tolerances for master
and Table 7. gages shall be as shown in Fig. 8 and Fig. 9 and Table 8 and
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.¬
E 675
TABLE 5 Master Plug Gages for Single Oblique-Bore Stopcocks
Length of Distance from Large End of Distance from Gaging Point
Diameter at Gaging
Tapered Portion, Tapered Portion to Gaging to Lower Reference
Stopcock Designation Point, 60.003 mm
+2.0 mm, −0 mm Point +1.5 mm, −0 mm Line 60.03 mm
DD
EE NN PP
1 52 12.60 24.5 12
1 ⁄2 52 12.60 24.5 12
2 52 12.60 24.5 12
3 62 17.35 27.0 17
4 62 17.35 27.0 17
TABLE 6 Master Ring Gages for Single Oblique-Bore Stopcocks
Distance from Gaging
Length of Ring, +0.2 Inside Diameter at Gaging Point
Distance from Top to Gaging
mm, −0 mm Point, 60.003 mm to Lower Reference Point,
Stopcock Designation Point (Approximate)
EE DD 60.03 mm
NN
PP
1 40 12.60 14.0 12
1 ⁄2 40 12.60 14.0 12
2 40 12.60 14.0 12
3 50 17.35 16.5 17
4 50 17.35 16.5 17
FIG. 7 Double Oblique-Bore Stopcock
Table 9. The overall diameter of the ring gage shall be The recesses shall be so placed that the reference lines fall
approximately twice the diameter of the bore at the reference approximately midway in the recesses.
line in the central window. 5.3.3 Fit of Product in Working Gages—The product (both
5.3.1 Plug Gage—The central circumferential reference inner and outer members) shall fit the corresponding working
line shall be the gaging point. A short axial reference line shall gages so that the centerlines through the openings correspond
intersect each of the circumferential reference lines. The axial with the reference lines on the gage within 6 0.3 mm for 1,
line intersecting the central circumferential reference line shall 1 ⁄2, and 2-mm bores, and 6 0.5 mm for 3 and 4-mm bores.
be on the opposite side of the plug from the other two axial
6. Requirements for T-Bore and 120-deg Bore Stopcocks
lines. All three axial lines shall be in the same plane running
through t
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