ISO-Standard ISO 5599/I (Series W60, W63, W64)
ISO 5599/II (Series W65)
ANSI-Standard (Series W70 and W74)
SAE-Standard (Series 80 and 84)

All piping is to the base, not the valve, for easy valve removal and servicing.
Other features:
Three constructions available:
poppet
stainless steel spool & sleeve
resilient seal spool
Valves are fully interchangeable with any other valves using a standard mounting interface
Compact design (manifold mounting system)
5/2- and 5/3-way valves in all sizes available
Port size up to G 1½
Flow rating up to kv = 22
Electrical connections provided by:
drop-cord plug (ISO 5599/I)
body-to-base / plug-in base (ANSI or ISO 5599/II)
3- or 5-pin connectors (SAE-Norm)
Variety of interposed control devices available.