8 Seat Replacement (No Shims)
8.1 Determine if shims are required on the valve specification sheet.
If shims are not required follow instructions in this section. If
shims are required then skip directly to instructions in section 9.
a WARNING: The actuator must be removed from the valve
body prior to replacing the seat.
8.2 Loosen the packing box nuts.
8.3 Using the appropriate retainer tool (see Table III), remove the
seat retainer. (Retainer tools are available from the factory).
8.4 Remove the seat.
8.5 Check both seat and plug surfaces for wear and galling. Replace
these parts if necessary.
8.6 Clean seat, seat retainer and body threads of old sealant resi-
due. Clean parts thoroughly.
8.7 Reinstall the seat into the valve body.
8.8 Apply lubricant to the threads of the seat retainer. Replace the
seat retainer and tighten manually until it makes contact with
the seat, then loosen it by 1/8 of a turn. Open and close the
valve several times while tightening the seat retainer manually
to position the seat correctly. Finally, close the valve and tighten
the seat retainer according to the values in table III.
9 Seat Replacement (With Shims)
9.1 Determine if shims are required on the valve specification sheet.
If shims are required follow instructions in this section. If
shims are not required then use instructions in section 8.
a WARNING: The actuator must be removed from the valve
body prior to replacing the seat.
9.2 Loosen the packing box nuts.
9.3 Using the appropriate retainer tool (see Table III), remove the
seat retainer. (Retainer tools are available from the factory).
9.4 Remove the seat and any shims that may be installed under
the seat.
9.5 Check both seat and plug surfaces for wear and galling. Replace
these parts if necessary.
9.6 Clean seat, seat retainer and body threads of old sealant
residue. Clean parts thoroughly.
9.7 To reinstall the seat, place the seat (without shims) into the
valve body. Rotate the plug to 90 degrees open. Measure
dimension “A” as shown in figure 4a.
Table III: Seat Retainer Removal Tools and Required Torque Values
Valve size
Face-to-Face
ANSI/ISA-75.08.02, EN 558.1/2 series 36,
IEC 60534-3-2, DIN 3202 F1,
EN 558-1/2 series 1
ANSI/ISA-75.08.0,
EN 558-1/2 series 37-38,
IEC 60534-3-1
1"
DN 25
Part number: 183224.999.000
Torque: 41 ft-lbs / 55 Nm
1.5"
DN 40
Part number: 183225.999.000
Torque: 103 ft-lbs / 140 Nm
2"
DN 50
Part number: 183226.999.000
Torque: 155 ft-lbs / 210 Nm
3"
DN 80
Part number: 183227.999.000
Torque: 406 ft-lbs / 550 Nm
4"
DN 100
Part number: 183228.999.000
Torque: 428 ft-lbs / 580 Nm
6"
DN 150
Part number: 183229.999.000
Torque: 959 ft-lbs / 1300 Nm
8"
DN 200
Part number: 183230.999.000
Torque: 701 ft-lbs / 950 Nm
Part number: 183229.999.000
Torque: 959 ft-lbs / 1300 Nm
10"
DN 250
Part number: 183231.999.000
Torque: 553 ft-lbs / 750 Nm
Part number: 183230.999.000
Torque: 701 ft-lbs / 950 Nm
12"
DN 300
Part number: 183232.999.000
Torque: 752 ft-lbs / 1020 Nm
Part number: 183231.999.000
Torque: 553 ft-lbs / 750 Nm
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