The document was typed on a typewriter. The symbols and schematics were hand drawn by Bob Koski, one of the co-founders of Sun Hydraulics. The drawings included were also done by Bob starting with the CPEA-XAN which is dated July 29, 1970. Incidentally, the first cartridge valve that Sun shipped was a CPEA-LAN.

While reading this document, please keep in mind that this publication is close to 40 years old. In today’s world, pressures are higher, fluids are cleaner and Sun has learned a lot.

All the products shown in this document are still available or have direct replacements that are current in today’s product line. Please refer to the following cross reference when using this publication:

CPEA-*AN – is now CKEB-*CN

RPGB – use either RPGC or RDFA

SPEA– use either SCEA or RSFC

PBFA -use PBFB

PPFA – use PPFB or PRFB

CXEB – still available but we recommend using CXED

NCEA – still available but we recommend using NCEB