Needle, Metering & Bleed/Purge Valves:

Bleed/Purge Valves (BV & PG Series) - Parker, PDF

Needle Valves (NP6 Series) - Parker, PDF
Needle Valves (SN6 Series) - Parker, PDF
Needle Valves (U Series) - Parker, PDF
Needle Valves (V Series) - Parker, PDF
Needle Valves (VQ Series) - Parker, PDF

Metering Valves (HR Series) - Parker, PDF
Metering Valves (N Series) - Parker, PDF

Relief Valves (RH4 Series) - Parker, PDF
Relief Valves (RL4 Series) - Parker, PDF