PSV UNF 4 N S1 .../...-2 -A 2 H 6/6 A ... B .../EA/UNF 2 -A 2 H 16/16 A ... B .../EA/UNF 2 -A 2 H 6/6 A ... B .../EA/UNF 2 -A 2 H 6/6 A ... B .../EA/UNF 2 -A 2 H 3/3 A ... B .../EA/UNF 2 -A 2 H 3/3 A ... B .../EA/UNF 2 -A 2 H 16/16 A ... B .../EA/UNF 2 -A Proportional Spool Valves