FMC Corporation - Talstar FMC L06 - Manual (Page 41)

Doc No: OMM50000903
Rev: B Page 41 of 65
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10.3.1.6 Installation of AR Valves
AR valves are installed differently depending on their size. Larger valves are
assembled at the factory with the cage screwed on hand-tight before shipping while
smaller valves are tightened with a torque wrench to final specifications. Follow the
instructions in section 10.3.1.6.1 for all series 3 and 23 valves as well as valve part
numbers 3267652 and P533637. See section 10.3.1.6.2 for all larger AR valves.
10.3.1.6.1 Installing Smaller, Factory Torqued AR Valves
The suction valve must be installed before the discharge valves. The following
reassembly procedure is applicable for both.
1. Select a new valve assembly.
2. Carefully clean the taper in the fluid cylinder and on the valve seat with a cleaning
solution and a clean cloth. Small scratches can be removed with steel wool or
100 grit emery paper. Remove all dirt, grease, oil, water, or other contaminants
from the surfaces. Do not oil the seats or the seating surfaces in the fluid
cylinder. Confirm that they are dry before installation.
3. Position the valve assembly directly over the mating taper in the fluid cylinder.
4. Let the valve drop into the taper. Check to see that the seat is sitting in the taper
properly and not cocked to one side. If the valve drops straight, it will seize on the
taper. When correctly seated, it cannot be pulled up by hand.
5. Place the small end of the knockout tool, part number P504436 (see section
9.3.1.2), through the hole in the cage onto the center of the valve body.
6. While applying downward pressure on the tool, strike the end two times with a
hammer to seat the valve. Be very careful not to strike the cage as this will cause
the valve to be damaged and fail.
7. Verify that the valve body moves freely.
8. After the valve is secured in the fluid cylinder, verify the cage is torqued to 30 ft-
lbs (40.7 N-m).