Questar Gas - Good Practices for Gas Piping and Appliance ...

inch vertical direction when crossing from any underground
facility (water, sewer, electric, etc.).
EXCEPTION: Unless installed under the joint trenching
agreement.
NOTE: Underground piping shall not be covered or concealed
until inspected by the Administrative Authority.
11. CONCEALED PIPING, FITTINGS AND DEVICES: Unions,
regulators, shut-off valves, flex connectors, gas hoses and
automatic valves shall not be concealed. Bushings shall not be
utilized in the fuel line before the appliance shut-off valve.
12. SHUT-OFF VALVES: Valves used in connection with gas
piping shall be approved types. An accessible approved shutoff
valve shall be installed in the fuel supply piping outside of
each appliance and ahead of the union or connector within 6
feet of the appliance and in the same room. In addition, appliance
shutoff valves are now permitted to be located within 50 feet of
the appliance on a remote manifold such as used with a CSST
parallel piping system.
EXCEPTION: When approved by the authority having
jurisdiction, shut-off valves for listed, vented decorative
appliances may be accessibly located in an area remote from
the appliance. Such valve shall be permanently identified and
shall serve no other equipment.
An approved shut-off valve shall be installed upstream of the
MP regulator.
Shut-off valves shall be located to provide for ready access of
operation and installed in a location where it will not be damaged.
Installation of valves under appliances, such as wall heaters
and fireplaces, should be installed in such a manner where the
appliance can be removed without removal of the valve. Valves
are prohibited in concealed locations and furnace plenums.
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