ANSI Z21.75-2007/CSA 6.27-2007 (R2012)

This publication represents a basic standard for safe operation, substantial and durable construction, and acceptable performance of connectors for outdoor gas appliances and manufactured homes. It is the result of years of experience in the manufacture, testing, installation, maintenance, inspection and research on connectors for outdoor gas appliances and manufactured homes designed for utilization of gas. There are risks of injury to persons inherent in some appliances that, if completely eliminated, would defeat the utility of the appliance. The provisions in this standard are intended to reduce such risks while retaining the normal operation of the appliance.

Scope

1.1.1
This Standard applies to newly produced assembled connectors constructed entirely of new, unused parts and materials. Such connectors are intended for exterior use above ground for making the following nonrigid connections:

a) Between the gas supply and the gas inlet of an appliance for outdoor installation that is not frequently moved after installation. These connectors are not intended for use with wheeled, caster mounted or portable appliances;
b) Between the permanent gas outlet of a manufactured home community (mobile home park) or individual site and the piping inlet on a park trailer or a manufactured (mobile) home; or
c) Between sections of a multiple section manufactured (mobile) home.

1.1.2
Connectors covered by this standard are considered suitable for use with natural, manufactured, mixed and liquefied petroleum (LP) gases and LP gas-air mixtures.

1.1.3 
Connectors covered by this standard are for use on piping systems operating at fuel gas pressures not in excess of 1/2 lb/in2 (3.5 kPa).

1.1.4
Connectors covered by this standard shall have a nominal length of not less than 1 ft (0.31 m) nor more than 6 ft (1.83 m).

1.1.5
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.

1.1.6
All references to psi throughout this standard are to be considered gage pressure unless otherwise specified.

1.1.7
Exhibit A contains provisions that are unique to Canada.

1.1.8
Exhibit B contains a list of standards specifically referenced in this standard and sources from which these reference standards may be obtained.