Caterpillar Part reference
Catalog part 0056520 is listed as a plug-check valve in the Caterpillar catalog. In the hydraulic-system records supplied, it appears as a catalog occurrence within valve groups associated with Caterpillar 615C machines. Those occurrences do not confirm fitment for every machine configuration.
Recorded applications
Selected catalog references that list this part. A catalog association does not confirm fitment for every machine or configuration.
Catalog context
LockedCheck the signed-in Part Book for available diagrams and the complete catalog breakdown.
| Part number | Description |
|---|---|
| 00***14 | plug-valve |
| 0056520 | plug-check valve (current part) |
| 00***21 | spring |
| 00***23 | poppet; (check valve) |
Selected entries from this catalog unit. Other part numbers are masked. Confirm the full breakdown and your machine configuration before ordering.
View model pageGeneral guidance
In general, a check valve allows fluid to flow in one direction and blocks reverse flow, helping hydraulic circuits hold pressure or prevent backflow. A plug-check valve is a check-valve type designed to fit into a threaded or bored port within a hydraulic block or valve assembly. Its exact construction and role in a given circuit should be checked against the catalog.
Use part number 0056520 as the reference when requesting this plug-check valve. Before ordering, confirm the machine model, serial number and the parent valve group where this part is used, since the catalog occurrences include specific serial and assembly conditions.
Catalog references
Locked