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GROUND JOINT ___
UNION GAS CONTROL
(OPTIONAL) _ VALVE
_)_ DRIP LEG
3" MIN.
(76.2 m
CAP
FIGURE 19. GAS PIPING WITH FLEXIBLE CONNECTOR.
A sediment trap shall be installed as close to the inlet of the
water heater as practical at the time of water heater installation.
The sediment trap shall be either a tee fitting with a capped
nipple in the bottom outlet or other device recognized as an
effective sediment trap. Ifa tee fitting is used, it shall be installed
in conformance with one of the methods of installation, shown
in Figures 19 and 20.
GROUNOJOII_T _ _ BLA)K PIPE
UNION BLACK PIPE
(OPTIONAL)
GAS
CONTROL
VALVE
3" MIN,
(76,2 n
CAP
FIGURE 20. GAS PIPINGWITH ALL
BLACK IRONPIPETO GASCONTROL.
17