172-65207MA-08 (SR-3/SR-8) 8 Oct 2020
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Piping Installation 3: Exhaust Piping
Other cautions
Be certain to connect exhaust piping to protect against instances of unexpectedly
high-volume waste steam flow into the SR, which may cause waste steam/hot water
to be discharged.
When back pressure is applied to the SR, it also affects the upstream equipment
from which waste steam is recovered.
To prevent putting back-pressure on upstream equipment, make exhaust piping as
large in diameter, short, and with as few bends as possible.
Even though piping with the same diameter as the exhaust piping of the SR is
recommended to prevent putting back pressure on the SR, it is possible to use a
smaller pipe diameter depending on the length of the pipe to the pit or recovery
destination.
Suggested diameters for the exhaust piping are as follows:
Model
Length & Diameter of Exhaust Piping
Less than
10 m (33 ft)
10 m to 20 m
(33 ft to 66 ft)
20 m to 30 m
(66 ft to 98 ft)
Greater than
30 m (98 ft)
SR-3
50 mm (2 in)
80 mm (3 in)
100 mm (4 in)
150 mm (6 in)
SR-8
80 mm (3 in)
100 mm (4 in)
150 mm (6 in)
