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This specification covers metal insert fittings and copper crimp rings for use with SDR9 cross-linked polyethylene (PEX) tubing. All performance tests shall be performed on assemblies of fittings, crimp rings, and PEX tubing. Fittings and crimp rings shall meet the material and dimensional requirements prescribed. The sealing surfaces of the insert shall be smooth and free of foreign material. Fitting walls shall be free of cracks, holes, blisters, voids, foreign inclusions, or other defects that are visible to the unaided eye and affect the wall integrity. Insert fittings shall be joined to PEX tubing by the compression of a copper crimp ring around the outer circumference of the tubing, forcing the tubing material into annular spaces formed by ribs on the fitting.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers metal insert fittings and copper crimp rings for use with cross-linked polyethylene (PEX) tubing in 3/8 , 1/2 , 5/8 , 3/4 , 1, 1 1/4 , 11/2 , and 2 in. nominal diameters that meet the requirements for Specifications F876 and F877 and for use with polyethylene of raised temperature (PE-RT) tubing in 3/8 , 1/2 , 5/8 , 3/4 and 1 in. and 1 1/4 in. nominal diameters that meet the requirements of Specifications F2623 and F2769. These fittings are intended for use in 100 psi (689.5 kPa) cold- and hot-water distribution systems operating at temperatures up to, and including, 180°F (82°C). The requirements for materials, workmanship, dimensions, and markings to be used on the fittings and rings are also included.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units which are provided for information only and are not considered the standard.
1.3 Compliance with this specification requires that these fittings be tested and certified to Specification F877 when used with PEX tubing and Specification F2769 when used with PE-RT tubing.
1.4 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A269 Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service
A276 Specification for Stainless Steel Bars and Shapes
A312/A312M Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
B16/B16M Specification for Free-Cutting Brass Rod, Bar and Shapes for Use in Screw Machines
B62 Specification for Composition Bronze or Ounce Metal Castings
B75 Specification for Seamless Copper Tube
B88 Specification for Seamless Copper Water Tube
B124/B124M Specification for Copper and Copper Alloy Forging Rod, Bar, and Shapes
B140/B140M Specification for Copper-Zinc-Lead (Red Brass or Hardware Bronze) Rod, Bar, and Shapes
B283 Specification for Copper and Copper-Alloy Die Forgings (Hot-Pressed)
B371/B371M Specification for Copper-Zinc-Silicon Alloy Rod
B584 Specification for Copper Alloy Sand Castings for General Applications
B967/B967M Specification for Copper-Zinc-Tin-Bismuth Alloy Rod, Bar and Wire
D1600 Terminology for Abbreviated Terms Relating to Plastics
D2122 Test Method for Determining Dimensions of Thermoplastic Pipe and Fittings
E18 Test Methods for Rockwell Hardness of Metallic Materials
F412 Terminology Relating to Plastic Piping Systems
F876 Specification for Crosslinked Polyethylene (PEX) Tubing
F877 Specification for Crosslinked Polyethylene (PEX) Hot- and Cold-Water Distribution Systems
F2623 Specification for Polyethylene of Raised Temperature (PE-RT) SDR 9 Tubing
F2769 Specification for Polyethylene of Raised Temperature (PE-RT) Plastic Hot and Cold-Water Tubing and Distribution Systems
ICS Number Code 23.040.40 (Metal fittings)
UNSPSC Code 40183000(Rubber and plastic tubing)