1.1 Scope 1.1.1 Types of Regulators. This standard applies to individual gas appliance
pressure regulators, which are not a part of a combination control (see Part V,
Definitions), constructed entirely of new, unused parts and materials,
hereinafter referred to as regulators intended for application on individual
gas appliances. This standard also applies to negative gas appliance pressure regulators (see
Part V, Definitions). The performance of negative pressure regulators is
covered under Part III of this standard. Compliance of a device with this standard does not imply that such device is
acceptable for use on gas appliances without supplemental tests with the device
applied to the particular appliance design. Components performing functions other than those of a gas appliance pressure
regulator shall comply with the applicable American National Standards. 1.1.2 Types of Gases. This standard applies to regulators for operations with
natural, manufactured and mixed gases liquefied petroleum gases and LP gas-air
mixtures. 1.1.3 Regulators shall be classified in accordance with their intended
application with reference to inlet pressures as follows: Rated
Inlet Pressure ½ psi (3.5 kPa)
2 psi (13.8 kPa)
5 psi (34.5 kPa) 1.1.4 Types of Application. This standard applies to regulators for the
following general types of application: a. Main burner load application; b. Pilot burner load application; c. Main burner and pilot burner load application to control a minimum pilot
flow rate of: 1. 0.15 cubic foot per hour (1.18 cm³/s), P, or 2. 0.50 cubic foot per hour (3.93 cm³/s), P; or d. Domestic range application (see 2.11). 1.1.5 Mounting Position(s). The manufacturer shall specify one or more of the
following mounting classifications (see 1.12). Upright - single position on a horizontal axis with respect to the inlet
connection, as specified by the manufacturer. Horizontal - any position on a horizontal axis with respect to the inlet
connection. Vertical - any position on a vertical axis with respect to the inlet
connection. Limited Horizontal - any position from upright to 90 degrees (1.57 rad) from
upright on a horizontal axis with respect to the inlet connection. Multipurpose - any position on a horizontal, vertical or intermediate axis
with respect to the inlet connection. The test specified herein shall be conducted with the regulator mounted in the
manufacturer's specified upright position, unless otherwise specified herein. If the manufacturer specifies more than one mounting position, the tests in 2.8
or 3.8, as applicable, shall be conducted in each mounting position. The data
from these tests shall then be analyzed to determine the mounting position
which produces the minimum outlet pressure with the minimum outlet pressure
setting (if adjustable), and the mounting position which produces the maximum
outlet pressure with the maximum outlet pressure setting (if adjustable). These
two mounting positions shall be designated Position A and Position B,
respectively. a. The tests in 2.9 or 3.9 and 2.10, as applicable, shall be conducted in
Position A, as determined in 2.8 or 3.8. b. The tests in 2.9 or 3.9 and 2.10, as applicable, shall also be conducted in
Position B, determined in 2.8 or 3.8. 1.1.6 The tests specified herein shall be conducted at a room temperature of
77 ± 10°F (25 ± 5.5°C). Regulators and vent limiters complying with the
provisions of this standard shall be considered as having an ambient
temperature range of 32°F (0°C) to 125°F (51.5°C). At the option of the
manufacturer, a greater ambient temperature range may be specified, in which
case additional tests as outlined in 2.1.2 and 2.1.3 shall be conducted. 1.1.7 If a value for measurement as given in this standard is followed by an
equivalent value in units, the first stated value is to be regarded as the
specification. 1.1.8 All references