scope:

General

This Standard establishes specifications for cast copper alloy fittings and nuts used with flared seamless copper tube conforming to ASTM B 88 (water and general plumbing systems). Included are requirements for the following:

(a) pressure rating

(b) size

(c) marking

(d) material

(e) dimensions

(f) threading

(g) hydrostatic testing

Convention

For the purpose of determining conformance with this Standard, the convention for fixing significant digits, where units or maximum or minimum values are specified, shall be "rounding off" as defined in ASTM E 29, Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications. This requires that an observed or calculated value be rounded off to the nearest unit in the last right-hand digit used for expressing the limit. Decimal values and tolerances do not imply a particular method of measurement.

Relevant Units

This Standard states values in both metric and U.S. Customary units. These systems of units are to be regarded separately as standard. Within the text, the U.S. Customary units are shown in parentheses or in separate tables. The values stated in each system are not exact equivalents; therefore, it is required that each system of units be used independently of the other. Combining values fromthe two systems constitutes nonconformance with the standard.

Quality Systems

Requirements relating to the product manufacturer's quality system programs are described in Nonmandatory Appendix B.

Service Conditions

Criteria for selection of materials suitable for particular fluid service are not within the scope of this Standard.