The Heidelberg F4.335.001 is best identified by its official-style naming as a cylinder/valve unit, with the Heidelberg eShop result listing the revisioned reference F4.335.001/04 as Cylinder/valve unit D100 H35/20. This is the strongest source for the official part name and confirmed machine use.
In industry listings, the same part is frequently marketed under alternate technical sales terms such as impression ram, pneumatic cylinder, or cylinder/valve unit. Because these descriptions appear across multiple sellers for the same reference, the safest technical wording for an ecommerce listing is Heidelberg Cylinder Valve Unit F4.335.001, while noting the common market synonyms for search visibility.
Confirmed compatibility
- Heidelberg XL 105
- Heidelberg XL 106
Part number verification
- Base part number: F4.335.001
- Documented revisioned variant: F4.335.001/04
Part-number variation
The main variation found is F4.335.001/04, which appears consistently in Heidelberg and aftermarket listings. I did not find trustworthy evidence of additional interchangeable suffix variants beyond /04, so compatibility should be matched by the exact installed reference before ordering.
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