5. Piping Arrangement
Requirement
Install catchpot with the proper
diameter.
Make sure the flow of
condensate is not
obstructed.
To prevent rust and scale
from flowing into the trap,
connect the inlet pipe 25-
50 mm (1-2 in.) above
the base of the T - pipe.
When installing on the
blind end, make sure
nothing obstructs the flow
of condensate.
Check to make sure that the pipes connected to the trap have been installed properly
1. Is the pipe diameter suitable?
2. Has the trap been installed within the allowable inclination and with the arrow on the body
pointing in the direction of flow?
3. Has sufficient space been secured for maintenance?
4. Have maintenance valves been installed at the inlet and outlet? If the outlet is subject to
back pressure, has a check valve been installed?
5. Is the inlet pipe as short as possible, with as few bends as possible, and installed so that
condensate will flow naturally down into the trap?
6. Has the piping work been done with the proper methods, as shown in the table above?
6. Operational Check
A visual inspection can be carried out to aid in determining the necessity for immediate
maintenance or repair, if the trap is open to atmosphere. If the trap does not discharge to
atmosphere, use diagnostic equipment such as a stethoscope, thermometer or TLV Pocket
TrapMan (within its pressure and temperature measurement range).
Normal:
Condensate is discharged continuously with flash steam and the sound of
flow can be heard. If there is very little condensate, there is almost no sound of flow.
No condensate is discharged. The trap is quiet and makes no noise, and the surface
Blocked:
temperature of the trap is low.
Blowing:
Live steam continually flows from the outlet and there is a continuous metallic sound.
Live steam is discharged through the trap outlet together with the condensate and
Steam
there is a high-pitched sound.
Leakage:
Note: JL9X and JLH9X have a minimum required condensate amount requirement to ensure
proper sealing.
Correct
Incorrect
Diameter is
too small.
Diameter is too small
and inlet protrudes
into pipe.
Rust and scale flow
into the trap with the
condensate.
Condensate collects
in the pipe.