FMC Corporation - Talstar FMC L06 - Manual (Page 38)

Doc No: OMM50000903
Rev: B Page 38 of 65
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10.3.1.4 Mandrel Type
This is a variation of the Eccentric Disc type. It can be used on all sizes of valves. It
has a more uniform loading of the seat than the Eccentric Disc type and therefore more
pulling capacity. A unique size is required for each valve size and the cost is usually
higher than the Eccentric Disc. Refer to Picture 3 to see a typical mandrel type tool.
Picture 3: Mandrel Type Tool
NOTE: Similar to the Eccentric Disc type of puller, the valve must be disassembled and
the cage, spring and valve body removed leaving only the seat in the fluid cylinder.