PSV UNF 42-3 -A2 H 63/63 S/E/UNF 3 -A5 H 80/80 S/E/UNF 3 -A2 H 25/25 A 122 B 122 S/HE/UNF 3 -A2 H 25/25 S/HE/UNF 3 -A2 H 25/25 A 108 B 163/EA/3 AL-4-B7/108 BL-4-B7 /163 -ZPL 3 Z 3 -A2 H 63/63 A 140 B 200/HE/UNF 3 -E 20 UNF-G 24 Proportional Spool Valves