172-65207MA-08 (SR-3/SR-8) 8 Oct 2020
12
Piping Installation 2: Condensate Outlet Piping, Blowdown Piping and
Overflow Piping for Exhaust Pipe
without
any rise
without any rise
Install piping from the
condensate outlet to a
safe area such as a pit
where people will not
come into contact
blow-
down piping is connected to the
condensate outlet piping
forgetting to
close the valve, delays in discover -
ing failures, the accumulated scale
in the SR flowing into the conden -
sate outlet piping
Other cautions
When back pressure is applied to the SR, it also affects the upstream equipment
from which waste steam is recovered.
Even though piping with the same diameter as the condensate outlet piping of the
SR is recommended to prevent back pressure from being applied to the SR, it is
possible to use a smaller pipe diameter depending on the length of the pipe to the
pit or discharge destination.
Suggested diameters for the condensate outlet piping are as follows:
When the condensate outlet valve or the overflow piping for exhaust pipe is
installed, make sure to use either a full-bore ball valve or a gate valve so that back
pressure does not interfere with the operation of the SR.
Pipe Length to Pit or
Recovery Destination
Less than
10 m (33 ft)
10 m to 50 m
(33 ft to 164 ft)
Greater than
50 m (164 ft)
Outlet Pipe Diameter
25 mm (1 in)
40 mm (1
1
/
2
in)
50 mm (2 in)
* Depending on the specifications, the product may or may not feature an overflow outlet for
the exhaust pipe. Products without an overflow outlet should be fitted with an overflow line of
nominal diameter 10 mm (3/8 in) or more.
