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YarwaY A.T.-Temp CryogeniC desuperheATer
InstallatIon and MaIntenance InstructIons
The A.T.-Temp Cryogenic desuperheater is
provided with a lower body length, as specified
in the contract drawing and the mounting
branch for the process pipework must be
manufactured to suit.
The length of this branch should be such, that
the centerline of the spray cylinder is located
on the centerline of the process line (± 5 mm).
The mounting branch nominal bore and pipe
schedule (check the applicable process piping
code), should be verified and in line with the
dimensions mentioned on the certified drawing.
Figure 1
Figure 2
process line
Fp9
Figure 3
process line
hWW
Figure 4
Liquid
7
8
process
gas
The minimum pipe run, required downstream
of the A.T.-Temp Cryogenic desuperheater,
varies with each individual application and
would be specified by yarway at the enquiry
stage. This straight run is needed to prevent
erosion due to impingement of droplets against
pipewalls, valves and fittings and is normally
in the order of 2 to 3 meters for hydrocarbons,
as a minimum (no upstream straight length is
normally required).
Check for damages
Liquid FLAnge posiTions
Fp12
Fp3
hAndWheeL posiTions
hWn
hWe
Air
6
5
5
10
9
4
Check for damages
process
gas flow
Fp6
process
gas flow
hWs
3
Air
5
The distance from the A.T.-Temp Cryogenic
desuperheater to the temperature sensor is
nominally 6 to 7 meters, although the distance
specific to the application would be advised by
yarway at the enquiry stage. Longer distances
will ensure that full evaporation will take place
at lower velocities.
The temperature sensor should be located in
the upper half of the pipe, avoid branching of
the process pipework between the A.T.-Temp
Cryogenic desuperheater and the sensor
(see Figure 4).
item
description
1
Temperature sensor
2
Temperature transmitter
3
Temperature controller
2
4
A.T.-Temp Cryogenic desuperheater
5
Air filter regulator
6
safety relief valve
7
strainer
8
Check valve
1
9
Flange
10
pneumatic -or e/p- positioner
2
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