Emerson Fisher ATST Desuperheater, Инструкция по эксплуатации

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Instruction Manual
D104734X012
ATST Desuperheater
July 2022
7
2. Remove the nozzle (key 10), nozzle gaskets (key 9), and nozzle body flange gasket (key 8).
3. Inspect the water and atomizing steam injection orifices for excessive wear, erosion/corrosion, or blockage due to
particulate. Wear is defined as any cuts, gouges, or widening of the openings at the point of water and steam
injection. Erosion/corrosion is defined as any form of rust or erosion of the nozzle. Blockages are defined as small
particulate becoming trapped within the flow channels of the nozzle, impeding flow. Replacement of the nozzle is
recommended if any of the preceding problems are present.
4. Rinse the nozzle (key 10) to remove any loose particulate that may be present.
Figure 4. Spray Nozzle Alignment Pin Location
GH01927
PIN
5. Reassemble in the following order: nozzle gasket (key 9), nozzle body flange gasket (key 8), spray nozzle (key 10),
second nozzle gasket (key 9), nozzle alignment pin (key 3), nozzle body flange assembly (key 7), washers (key 4),
and stud nuts (key 6). Ensure the nozzle is installed such that the flow arrow is aligned with the direction of process
steam flow.
It is recommended that any used gaskets be discarded and replaced with new ones.
6. Torque nozzle body flange nuts as indicated in table 3.
Table 3. Recommended Nozzle Body Flange Bolting Torque with Nickel Anti-Seize Lubricant
(1)
BOLT SIZE, INCH THREADS PER INCH LUBRICATION
RECOMMENDED BOLT TORQUE
(2)
N
S
m Lbf
S
ft
5/8 11
Nickel Anti-Seize
163 120
3/4 10 258 190
7/8 9 373 275
1
8
522 385
1‐1/8 712 525
1‐1/4 942 695
1‐3/8 1268 935
1‐1/2 1654 1220
1. For other lubricants, contact your Emerson sales office for recommended bolt torque.
2. Torques for lubricated studs with heavy hex nuts.