Brochure

Gastite Division, Titeflex Corporation
1116 Vaughn Parkway / Portland, TN 37148
800.662.0208 / www.gastite.com / [e-mail]
96
April 2015
Section 8: Definitions
LISTED – Equipment or materials including a list published by an organization acceptable to the authority having
jurisdiction and concerned with product evaluation that maintains periodic inspection of production of listed equipment or
materials and whose listing states either that the equipment or materials meets appropriate standards or has been tested and
found suitable for use in a specified manner.
LOCKUP PRESSURE, REGULATOR – e system pressure, immediately downstream of the regulator, at which the
regulator valve will completely close (leak tight) under no-flow conditions to prevent the downstream pressure from exceeding
a predetermined level.
MAXIMUM ACTUAL OPERATING PRESSURE – e maximum pressure existing in a piping system during a normal
annual operating cycle.
OVER-PRESSURE PROTECTION DEVICE (OPD) – System component that is intended to protect all downstream
components from high pressures in the event of a system failure. OPDs are required in gas systems using more than 2 PSI
line pressure.
PIPING SYSTEM – As used in this standard, an assembly of corrugated stainless steel tubing and tubing connection fittings,
intended for field assembly and installation in residential or commercial buildings to distribute fuel gas to gas utilization
equipment within the building. e piping system may also include a gas pressure regulator(s), a shutoff valve(s), tube
shielding devices, distribution manifold(s), and other approved devices or components.
PLENUM – A plenum is an enclosed portion of the building structure that is designed to allow air movement, and thereby
serve as part of an air distribution system.
PRESSURE DROP – e loss in static pressure of flowing fuel gas due to friction or other flow resistance in tubing, fittings,
valves, regulators, or other devices in the piping system.
QUALIFIED INSTALLER – Any individual, firm, corporation or company which either in person or through a representative
is engaged in and is responsible for the installation or replacement of building gas piping systems, who is experienced in such
work, familiar with all precautions required, and has complied with all the requirements of the authority having jurisdiction.
QUICK-DISCONNECT DEVICE – A hand-operated device which provides a means for connecting and disconnecting
an appliance or an appliance connector to a gas supply, and which is equipped with an automatic means to shut off the gas
supply when the device is disconnected.
REGULATOR, PRESSURE – A device placed in a gas line for reducing, controlling and maintaining the pressure in that
portion of the piping system downstream of the device.
SHIELDING DEVICE – A component of the piping system used to protect the installed corrugated tubing from accidental
puncture by nails, screws or similar hardware at concealed tubing support points.
STRIKER PLATE – A special type of shielding device used when concealed tubing is run through wall studs, floor and
ceiling joists or other structural members where tubing movement is restricted.
VALVE, SHUTOFF – A device used in piping to control the gas supply to any section of the piping system or to an appliance.