Class Number Description
3371-88
VALVES (GAS) - General Use-Certified to U.S. Standards

COVERAGE:

Pilot Adjustment, Pilot Shutoff, Burner, Hose End and Main Control Valves and Pilot
Shutoff Devices.

REQUIREMENTS:

ANSI Z21.15/CSA 9.1 Manually Operated Gas Valves for Appliances, Appliance
Connector Valves and Hose End Valves

All gas valves and pilot shutoff devices in this section are intended for operation at
an ambient temperature of 32?F (0?C) to 125?F (51.5?C) unless higher or lower temperatures are indicated
by statement.

Maximum pressure of 1/2 psig.

Testing for use with liquefied petroleum gases under American National Standard Z21.15
has been conducted in accordance with the OSHA Nationally Recognized Testing Laboratory
Program.

Sizes shown are for standard female tapered pipe threads unless otherwise indicated.

MARKING:

All valves shall bear the following markings:

  1. Permanent record of the manufacturer’s identifying marking. The wrench
    grip areas may be used for marking.
  2. Date of manufacture.
  3. A permanent marking specifying the maximum pressure rating of ? psi (3.5
    KPa) shall be provided on each valve.

    Exception: For gas burner valves, pilot shut-off valves, pilot adjustment
    valves and pilot shut-off devices, this marking may be located on the
    package or on a notice placed inside the package in which the valve(s) or
    device(s) is shipped.

  4. Manual gas valves suitable for use on food service equipment shall bear a
    legible permanent Delta symbol marking with a "c" inside. Location
    shall be on the body, top cap or stem, with the letter "c" not
    less than 3/32 inch (2.4mm) high.
  5. CSA Mark with "US" indicator. 

/ct