ASTM D2749-92(1999)e1

Standard Symbols for Dimensions of Plastic Pipe Fittings

SCOPE
1.1 These symbols specify terminology for the dimensions of pipe fittings made of plastic materials. It consists of a list of letter designations with definitions, followed by drawings of typical fittings, with the significant dimensions labeled in accordance with these letter designations.

General Information

• Status: Historical
• Publication Date: 09-Apr-1999
• ICS: 83.140.01 - Rubber and plastics products in general
• Technical Committee: F17 - Plastic Piping Systems
• Drafting Committee: F17.10 - Fittings

Relations

• Replaced By: ASTM D2749-02 - Standard Symbols for Dimensions of Plastic Pipe Fittings
• Effective Date: 10-Sep-2002
• Referred By: ASTM F438-23 - Standard Specification for Socket-Type Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 40
• Effective Date: 10-Apr-1999
• Referred By: ASTM F2829/F2829M-21 - Standard Specification for Metric- and Inch-Sized Fittings for Crosslinked Polyethylene (PEX) Pipe
• Effective Date: 10-Apr-1999
• Referred By: ASTM F877-23 - Standard Specification for Crosslinked Polyethylene (PEX) Hot- and Cold-Water Distribution Systems
• Effective Date: 10-Apr-1999
• Referred By: ASTM F1336-20 - Standard Specification for Poly(Vinyl Chloride) (PVC) Gasketed Sewer Fittings
• Effective Date: 10-Apr-1999
• Referred By: ASTM F437-21 - Standard Specification for Threaded Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 80
• Effective Date: 10-Apr-1999
• Referred By: ASTM F2863-11(2023) - Standard Specification for Central Vacuum Hose Inlet Valve Socket Dimensions
• Effective Date: 10-Apr-1999
• Referred By: ASTM D3034-23 - Standard Specification for Type PSM Poly(Vinyl Chloride) (PVC) Sewer Pipe and Fittings
• Effective Date: 10-Apr-1999
• Referred By: ASTM F2135-01(2022) - Standard Specification for Molded Drain, Waste, and Vent (DWV) Short-Pattern Plastic Fittings
• Effective Date: 10-Apr-1999
• Referred By: ASTM D2466-23 - Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40
• Effective Date: 10-Apr-1999
• Referred By: ASTM D2467-20 - Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80
• Effective Date: 10-Apr-1999
• Referred By: ASTM F3253-23 - Standard Specification for Crosslinked Polyethylene (PEX) Tubing with Oxygen Barrier for Hot- and Cold-Water Hydronic Distribution Systems
• Effective Date: 10-Apr-1999
• Referred By: ASTM F2658-07(2019) - Standard Specification for Type PSM Poly(Vinyl Chloride) (PVC) SDR 51 and SDR 64 Sewer Pipe and Fittings
• Effective Date: 10-Apr-1999
• Referred By: ASTM F2769-23a - Standard Specification for Polyethylene of Raised Temperature (PE-RT) Plastic Hot and Cold-Water Tubing and Distribution Systems
• Effective Date: 10-Apr-1999
• Referred By: ASTM F439-19 - Standard Specification for Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 80
• Effective Date: 10-Apr-1999

Standards Content (Sample)

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.
e1
Designation: D 2749 – 92 (Reapproved 1999) An American National Standard
Standard Symbols for
Dimensions of Plastic Pipe Fittings
This standard is issued under the fixed designation D 2749; 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.
e NOTE—Keywords were added editorially in April 1999.
1. Scope
S = length of male thread, includes pilot,
1.1 These symbols specify terminology for the dimensions
T = length of female thread,
of pipe fittings made of plastic materials. It consists of a list of
includes pilot,
V = root diameter of barbs,
letter designations with definitions, followed by drawings of
W = cap height,
typical fittings, with the significant dimensions labeled in
X = male end diameter of bushing,
accordance with these letter designations. Y = length of barb section,
Z = outside diameter of barbs
CB = counterbore on threaded fittings, optional,
2. Letter Designations of Dimensions
CM = length of male end, bushing,
2.1 The letter designations are defined as follows:
DJ = inside diameter, major, bushing,
EJ = wall thickness of socket, major, bushing; wall thickness of male end,
bushing,
A = socket entrance diameter, measured at intersection of socket diam-
EN = wall thickness of socket, minor, bushing,
eter and chamfer or radius, regardless of length “C”,
EW = radius on socket entrance,
B = socket bottom diameter, measured at intersection of socket diameter
EX = thickness with 30° taper on socket entrance; 30° entrance chamfer
and radius,
width, and
C = socket depth, measured from socket entrance face to socket bottom
EZ = thickness with 45° taper on socket entrance; 45° entrance chamfer
face,
width.
D = inside diameter of body,
E = wall thickness of socket, min,
2.2 When there are two different values for one categorical
F = wall thickness of body,
dimension on a fitting, the large one shall be designated with
G = intersection of socket center lines to socket bottom (center-to-socket
bottom), 90° elbows, tees, crosses, and shoulder on insert fittings; a
the letter for that category followed by a J meaning major, and
laying length,
the small one shall be designated by the same letter followed
H = intersection of socket center lines to end of fitting (center-to-end), 90°
by an N meaning minor; for example, on a 45-deg Y-branch,
elbows, tees, crosses; center to face,
J = intersection of socket center lines to socket bottom (center-to-socket
there are two J dimensions, the longer one is designated as JJ
bottom), 45° elbow; a laying length,
and the shorter one as JN. When there are more than two
K = intersection of socket center lines to end of fitting (center-to-end), 45°
elbow, different values for one categorical dimension, they are desig-
L = length over-all, coupling,
nated with the proper letter followed by an arabic number; for
M = outside diameter of hub,
example, L1, L2, and L3 for the three lengths on a plastic
N = socket bottom to socket bottom or seat thickness (center stop thick-
adapter to connect plastic pipe to a cast iron hub.
ness or pipe stop thickness),
P = insert le
...