ASTM F1960:20 pdf download.Standard Specification for Cold Expansion Fittings with PEX Reinforcing Rings for Usewith Cross-linked Polyethylene (PEX) and Polyethylene of Raised Temperature (PE-RT) Tubing.
8.1 Dimensions and Tolerances—The dimensions and toterances of fittings and PEX rcinkwcing rings shall be as shown in Figs. 1 and 2. and Fig. 4 when measured in accordance with
8.1.1 Alignment— The maximum angular variation of any opening shall not exceed 1° oft the true centerline axis.
8. 1 .2 Fittiiigc with Solder Joint Ends—Solder joint ends shall be in accordance with ANSI B16.22, ANSI B16.18 or MSS SP-104.
8.1.3 Tapered Threuth’d Ends—Fitting threads shall be right-hand conforming to ANSI B 1.20.1. They shall be taper threads (NPT).
9. Vorkmanship, FifliSh, and Appearance
9.1 The fittings shall be made from compounds that are homogeneous throughout. The sealing surfaces of the insert shall be smooth and free of foreign material. The tting walls shall be free of cracks, holes, blisters, voids, foreign inclusions, or other defcct that are ‘iib1c to the naked eye and that atiect wall integrity.
10. Assembly
10. 1 Cold Epansion Joints—Fittings shall be joined to PEX or PE-RT tubing by the contraction of the expanded tubing and reinforcing ring over the insert of the cold expansion fitting. Fittings and PEX reinforcing rings shall meet the dimensional and material requirements of this standard. PEX tubing shall meet the requirements of Specification F876 or F3253. PE-RT tubing shall meet the requirements of Specillcation F2769.
10.2 Expansion Tool—The expansion tool shall expand the PEX tubing and reinforcing ring to a maximum inside diameter as listed in Table 1. The expansion 100 shall be inspected for wear according to the manufacturer’s instructions.
10.3 Procedure:
10.3.1 Assembly of C’onnec!ions—Refer to manufacturers written installation instructions.
11. Reinforcing Ring Testing Methods
11. 1 Density—Determine the density of the reinforcing ring material in accordance with Test Method 1)1505, or Test Method D792. using three specimens.
11 .2 Degree Determine the degree of cross-linking in accordance with Test Method D2765. Method B except for the following: during sample preparation. place a reinforcing ring in a lathe with automatic feeding. Shave a strip approximately 0.004 in.-thick that consists of the full thickness of the ring. For the purpose of thk specification, the degree of cross-linking (V) is defined as 100 % minus the extract percent =v.
ASTM F1960:20 pdf download
