FMC Corporation - Talstar FMC L06 - Manual (Page 40)

Doc No: OMM50000903
Rev: B Page 40 of 65
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10.3.1.5 Threaded Type (AR Valves Only)
The threaded type can only be used on valves that have the through bore of the seat
threaded prior to installation. The load capacity is similar to the Mandrel Type but it is
simpler to use. This is the last variation of methods of applying tension to the valve
seat to remove it from the fluid cylinder.
Again the valve must be disassembled with the cage, spring and valve body removed
leaving only the seat in the fluid cylinder prior to use of the puller.
Figure 12: Threaded Tool in use
A threaded adapter is screwed into the seat after the cage, spring, and valve body have
been removed. An adapter nut mates the threaded section to the tension rod, strong
back and other parts used on the Eccentric Type to apply force to remove the seat from
the fluid cylinder.
The threaded seat is used on high pressure applications (above 5000 PSI) where the
required removal force for the seat is high. With high removal forces required, the
hydraulic puller is recommended over the nut, bumper, strong back, and puller
assembly.
Adapter nut, threads on to the
threaded tension rod and the
threaded adapter.
Valve Seat with internal threads,
Fluid Cylinder not shown
Female Thread
Threaded Adapter