This publication represents a basic standard for safe operation, substantial and durable construction, and acceptable performance of press-connect metallic fittings for use in fuel gas distribution systems. It is the result of years of experience in the manufacturer, testing, installation, maintenance, inspection of research on press-connect metallic fittings. There are risks of injury to persons inherent within appliances and accessories that, if completely eliminated, would defeat the utility of the appliance or accessory. The provisions in this standard are intended to help reduce such risks while retaining the normal operation of the appliance or accessory.
This Standard applies to metallic (copper, steel and stainless steel) press-connect type fittings, and valves (hereafter referred to as fittings unless otherwise specified) for use with fuel gas systems intended for installation above ground, below ground, indoors and outdoors.
This Standard applies to fuel gas systems rated for operating pressures not exceeding 125 psi (862 kPa).
This Standard applies to fittings intended for use with fuel gas systems 3/8 inch through 4 inch nominal size.
If a value for measurement as given in this standard is followed by an equivalent value in other units, the first stated value is to be regarded as the specification. This document is based on yard/pound quantities with SI equivalents provided as a guide for making metric conversions.
Fittings and other components complying with the provisions of this standard shall be considered as having an ambient temperature range of minus 40°F (-40 °C) to 180°F (82.2°C).
This Standard includes requirements to establish the suitability for use in concealed locations. (See Clause 3, Definitions)
Addenda 1 to ANSI LC 4-2012/CSA 6.32-2012, Press-connect metallic fittings for use in fuel gas distribution systems