here is some data right from the Alfa Laval website on this model
model T280 for trunk piston engines
Normal filter outlet pressure 3.5–6 bar
Min. filter outlet pressure 3 bar
Max. filter inlet pressure 12 bar
Test pressure 24 bar
Max. viscosity in filter at normal operation 75 cSt
Max. temperature in the filter 100°C
Alarm Δp 0.8 bar
Backflushing flow 3–5% of filter inlet flow
Housing material Nodular cast iron
Filter screen material Stainless steel
typically, I believe this is surplus from the Washingtoon State Ferry System. Why it was surplussed is of course a great mystery since it was never installed?
happy now Ms. Heloise of Yonkers?