Brochure
Gastite Division, Titeflex Corporation
1116 Vaughn Parkway / Portland, TN 37148
800.662.0208 / www.gastite.com / gastite@gastite.com
73
April 2015
Section 6: Pressure / Leakage Testing
S . P/L T
6.1 General Guidelines for Pressure Testing
a) e final installation must be inspected and tested for leaks in accordance with the local/state codes. In the absence of local
codes, installation must be in accordance with the current edition of the National Fuel Gas Code, ANSI Z223.1/NFPA-54
(USA), or Installation Codes CSA-B149.1 (Canada). Pressure testing must comply with these guidelines or local codes.
When local codes are more stringent, local codes must be followed.
b) Pressure testing must be performed during rough construction of the facility (before interior walls are finished). is will
permit a more complete inspection of the piping system during the pressure testing.
c) Do not connect appliances or pressurize with fuel gas until after the pressure test has been passed.
d) All gas outlets for appliance connections should be capped during pressure testing.
6.2 Elevated Pressure Systems
If an elevated pressure system requires a pressure test of 10 PSI or greater, the regulator must be removed or isolated prior to
pressure testing.
e test may be performed as a one-part test replacing the regulator with a suitable jumper pipe length for pressure testing
the entire system (Figures 6-1 and 6-2).
Or a two-part test may be performed as shown in Figure 6-3:
• e first test is performed on the elevated pressure section, between the meter connection and the pounds-to-inches line
regulator.
• e second test is performed on the low-pressure section, between the outlet of the pounds-to-inches line regulator and
the gas appliance outlets.
• For a two-part test, it is important to remember to close both gas shut-off valves to avoid damage to the regulator.
• When opening the shut-off valves it is important to open them slowly. A quickly opened valve can shock the regulator and
cause abnormal regulator behavior.
Fig. 6-1 Fig. 6-2 Fig. 6-3