PSV UNF 441/325-3 see extended text PSV UNF 441/325-3 -A2 H 63/63 B 175 FPH1 /EA/Z 40 MUNF /ZAL-0-B7/135-BL-0-B7/135/UNF 3 -A2 H 63/63 B 175 FPH1 /EA/Z 40 MUNF /ZAL-0-B7/135-BL-0-B7/135/UNF 3 -A2 H 63/63 C 175 /EA/Z 40 MUNF /ZAL-0-B7/135-BL-0-B7/135/UNF 3 Proportional Spool Valves