Pressure Testing The Gas Piping - Patterson-Kelley STORM ST-2500 Installation & Owner's Manual

Nominal Equivalent Pipe
Internal
Iron Pipe Length
Diameter
Size
(Inches)
(Inches)
90 ° Elb
(Feet)
2 2.067
2- 1/2 2.469
3 3.068
4 4.026

Pressure Testing the Gas Piping

The appliance and all gas piping connections should be pressure-tested and must be checked for leaks
before being placed into service. The appliance must be disconnected at the manual shut-off valve
(located at the end of the supplied gas train) from the gas supply piping during any pressure testing of
the system at pressures in excess of 0.0723 psig (2" W.C.). Perform the pressure test with compressed
air or inert gas if possible.
Some leak test methods, including the use of soap and water, may cause corrosion of the carbon steel
gas pipe fittings. If using soap and water or a similar leak test method, make sure to clean off all
moisture from the gas pipe fittings prior to placing the appliance into service.
Revised: June 26, 2020
Released: June 26, 2020
Pipe Capacity for Natural Gas
Maximum Capacity in Cubic Feet of Natural Gas Per Hour
Pressure Drop of 0.5" W.C.
Equivalent Length of Pipe (in feet)
Tee
(Feet)
5.17 10.3 2750
6.16 12.3 4350
7.67 15.3 7700
10.1 20.2 15800
© Patterson-Kelley 2020
All Rights Reserved.
20 40 60
- -
3000 2400
5300 4300
10900 8800
TM
P-K Storm Gas Fired Boiler
Technical Service 1.877.728.5351
80 100 150
- - -
2050 1850 1500
3700 3250 2650
7500 6700 5500
2691000273 P-K Storm ST2500-ST4000
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