ASME B16.51 pdf free download
ASME B16.51-2013 pdf free download.Copper and Copper Alloy Press-Connect Pressure Fittings.
6 MATERIAL 6.1 Wrought Copper Alloys
(a) Fittings shall be made from copper alloy UNS No. C10200, C12000, C12200, or C23000.
(b) Other coppers and copper alys shall be permitted, provided their chemical composition contains a minimum of 84% copper and a maximum of 1 6% zinc, and provided the fttings produced from the copper alloy meet all the mechanical and corrosion-resistant properties for the end purposes of the fttings. For potable water applications, fittings shall be produced from low-lead (0.25% or less) copper alloys and shall meet all the mechanical and corrosion-resistant properties for the end purposes of the fttings.
The composition of the copper alloy shall not inhibit joining to the tube or to other fttings. 6.2 Cast Copper Alloys
(a) Castings intended for use in applications up to 204″C (400~F] shall be of a copper aloy produced to meet
(1) the requirements of ASTM B62 UNS No. C83600, or
(2) the chemical and tensile requirements of ASTM B584 UNS No. C83800 or C84400 and in all other respects the requirements of ASTM B62
(b) Castings intended for use in potable water applica- tions up to 93°C (200F) shall be low lead (0.25% or less) and shall be
(1) ofa copper aloy produced to meet the require- ments of ASTM B584 UNS No. C87850 or C89833, or
(2) of other cast copper alloys, provided the fttings produced meet mechanical and corrosion-resistant prop- erties needed for potable water application 6.3 Elastomers (Seals) Elastomeric components shall be resistant to microbio- logical attack and ozone attack and shall contain inhibitors to prevent copper degradation. The elastomer shall be an ethylene propylene diene monomer (EPDM) and shall meet the minimum property and test requirements as defined by ASTM D2000, shown in the following table:
The special requirements shall be as fllows:
(a) designates compliance with NSF/ANSI 61.
(b) Z22 designates the compression set. The maximum compression set shall be 45% when compressed 2.62 mm (0.103 in.), 40% when compressed 3.53 mm (0.139 in]),and 35% when compressed 5.33 mm (0210 in).
(c) Z3 designates chloramine resistance, which is determined by testing for 1 008 h at 70^C (158*F) in a solution containing 50 ppm total chlorine, per ASTM D6284; this shall be checked and refreshed daily. Upon completion of the test, the change in volume shall be less than 30%。and the change in durometer hardness shall be a maximum of 6. There shall be no visual degradation of the elastomeric material.
(a) Z4 designates resistance of the elastomer to copper degradation. The test shall be conducted in accordance with para. 14.9.1. Upon completion of the test, the change in volume shall be less than 30%。and the change in durometer hardness shall be a maximum of
6. There shall be no visual degradation of the elastomeric material.
6.4 Seal Lubricant
The only seal lubricant that shall be used is that specl- fied by the manufacturer.
7 LAYING LENGTHS
Due to widely varying manufacturing processes, meaningful laying length requirements of fttings cannot beestablished. Consult the manufacturer for these dimensions.
8 TUBE STOPS
Except for repair couplings, fttings shall be manufac- tured with a tube stop (abutment) to limit tube insertion.Repair couplings shall not require a tube stop. The tube stop shall control joint length, even with an external (FTG) end having the minimum outside diameter shown in Table
9.1-1. Examples of various tube stop configurations are shown in Figure 8-1.ASME B16.51 pdf download.
