[[1] Bosch-Rexroth, Catalogue: 3/2, 4/2 and 4/3 directional valves, internally pilot operated, externally pilot operated RE 24751/08.08, 2010,]Search in Google Scholar
[[2] Ponar Wadowice, Catalogue: Directional spool valve, WK 460 110, 04.2001.]Search in Google Scholar
[[3] ISO 4401:2005 Hydraulic fluid power – Four-port directional control valves – Mounting surfaces.]Search in Google Scholar
[[4] ANSYS/Fluent Inc. 14.0 users guide, 2011.]Search in Google Scholar
[[5] Lisowski E., Rajda J., CFD analysis of pressure loss during flow by hydraulic directional control valve constructed from logic valves, Energy Conversion and Management 65, 285-291, 2013.10.1016/j.enconman.2012.08.015]Search in Google Scholar
[[6] Xudong Pan, Guanglin Wang, Zesheng Lu, Flow field simulation and a flow model of servovalve spool valve orifice, Energy Conversion and Management 52, 3249–3256, 2011.10.1016/j.enconman.2011.05.010]Search in Google Scholar
[[7] Domagala M., CFD Analysis of a flow control valve, Proceedings of 5th FPNI-PhD Symposium, 445-450, Kraków 2008.]Search in Google Scholar
[[8] Lisowski E., Czyżycki W., Rajda J., Multifunctional four-port directional control valve constructed from logic valves, Energy Conversion and Management 87, 905–913, 2014.10.1016/j.enconman.2014.07.008]Search in Google Scholar
