Parker-hannifin Corporation · NYSE:PH
Parker-hannifin — Technical Presentation
22 slides from Parker-hannifin's technical presentation
Slide 1: VA450 Training
VA450 Training Next Generation Load Sensing Valves
Slide 2: VA450 Valve Layout
VA450 Valve Layout Proportional, Load sensing, Pre-compensated Work section 4 End section • 1-8 work sections* Work section 3 • Combinable with VA Series valves VA300 & VA130 Work section 2 Work section 1 • Each work section individually configurable Inlet section • Custom manifold integration possi
Slide 3: VA450 Technical Data
VA450 Technical Data Pressure, Flow & Dimensions Max pressure, unlimited number of cycles: • Pump: 370 bar* • Work Port: 370 bar* • Tank: 20 bar Flow capacity: • Compensated flow to work port: 450 l/min Dimensions: Section width • Inlet section LS450, ASB450: 105 mm • Inlet section LSB450, ASB450 60
Slide 4: VA450 Inlet section LS450
VA450 Inlet section LS450 Pilot drain port, TP Pilot reducer valve Pressure relief Pressure relief valve, Pump valve, Tank Copy spool for Pilot supply load signal Load signal orifice check valve Tank port, T1 check valve Pump port, P1 Pump pressure gauge port, PX Pilot supply port for external use,
Slide 5: VA450 Inlet section LSB450
VA450 Inlet section LSB450 Pilot reducer valve Counterpressure valve Pilot supply port for external use, PF tank connection, T2 Pilot drain port, TP Tank port, T1 Pilot supply check valve Load signal port, PL Load signal port, PLX Pilot supply port, PS Main pressure relief valve Pump port, P1 Pump p
Slide 6: VA450 Inlet section AS450
VA450 Inlet section AS450 Load signal relief valve, PLM Pilot drain port, TP Pilot reducer valve Pressure relief Differential pressure limiter, PLS valve, Tank Copy spool for Pilot supply load signal Load signal orifice check valve Tank port, T1 check valve Pump port, P1 Pump pressure gauge port, PX
Slide 7: VA450 Inlet section ASB450
VA450 Inlet section ASB450 Pilot reducer valve Counterpressure valve Pilot supply port for external use, PF tank connection, T2 Tank port, T1 Pilot drain port, TP Load signal port, PL Pilot supply check valve Load signal relief valve, PLM Load signal port, PLX Pilot supply port, PS Differential pres
Slide 8: VA450 Inlet section Functionality
VA450 Inlet section Functionality • Pump and tank ports • Connection ports: T1 • P1 – Pump port. T2 / Counter • PX – Pump pressure gauge port. pressure valve • T1 – Tank port. P1 • T2 – Tank port. Can be fitted with a counter pressure valve. • TX – Tank pressure gauge port. PX • Counter pressure val
Slide 9: VA450 Inlet section Functionality
VA450 Inlet section Functionality • Pressure limitation LS • Main pressure relief valve in pump gallery – Protects pump and Pressure relief valve, tank valve from pressure peaks in the system. Pressure relief valve, pump • Pressure relief valve in tank gallery – Limits the pressure before the counte
Slide 10: VA450 Inlet section Functionality
VA450 Inlet section Functionality • Pressure limitation flow sharing Load signal relief • Adjustable pressure relief valve on the load signal – Limits the valve, PLM load signal to pump which together with the pump regulator Differential pressure setting corresponds to the maximum pressure in pump g
Slide 11: VA450 Inlet Section Functionality
VA450 Inlet Section Functionality • Load signal system • Load signal copy function – Copies the highest load signal using pump oil and sends it to port LS. Avoids oil consumption from Internal load signal check valve workport. Internal load signal copy function • Load signal orifice check valve – Re
Slide 12: VA450 Inlet Section Functionality
VA450 Inlet Section Functionality • Pilot pressure system • Pilot pressure supply function – Reduces pump pressure to a set Internal check valve level to ensure that there is enough pressure to supply the spool Internal pressure reducing actuators. The reduced pressure can either be internally conne
Slide 13: VA450 Inlet Section Functionality
VA450 Inlet Section Functionality • Pilot drain function – The pilot return can either be internally connected directly to the main tank or via a check valve to raise the pressure in pilot tank, or externally drained. TP PF • Connection ports: PS • PF – Port for external use of the reduced pilot pre
Slide 14: VA450 Work section WS450
VA450 Work section WS450 Pilot valve activating P-B, A-T Mechanical feed Mechanical feed Pilot valve reducer P-B reducer P-A activating P-A, B-T Workport A Workport B Pressure relief valves workport A Pressure relief valves workport B Spool actuator A-side Gauge port for pilot pressure activating P-
Slide 15: VA450 Work section Functionality
VA450 Work section Functionality • Spool actuator A-side EC ECWP PC • EC – Electric proportional spool actuator controlled by two pilot valves. Supplied internally with pilot pressure oil. • ECWP – Same as EC but with possibility to measure workport pressure in cap. • PC – Hydraulic, proportional sp
Slide 16: VA450 Work section Functionality
VA450 Work section Functionality • Spool actuator related functions • Spool stroke limiters – Mechanically limit the spool stroke in either direction, adding flexibility in maximum flow to Spool stroke limiter workport. Spool stroke limiter • Pilot signal damping – Dampens the pilot signal to provid
Slide 17: VA450 Work section Functionality
VA450 Work section Functionality • Spool related functions • Main spool – Function adapted main spools with pressure compensated flow rate up to 450 l/min. • Pressure compensator – Maintains constant speed of function Main spool regardless of the load and pressure variations in the system. • Integra
Slide 18: VA450 Work section Functionality
VA450 Work section Functionality Mechanical feed • Workport related functions reducer P-B Mechanical feed reducer P-A • Mechanical feed reducers – Set maximum pressure in workport individually by limiting the load signal with low energy loss, consumes ~2 l/min. Pressure relief valves workport A • El
Slide 19: VA450 End section US300
VA450 End section US300 Float function workport B Float function workport A Oil circulation port, OC Tank port, T3 Oil circulation function Pump port, P2 Load signal connection, LSP 19
Slide 20: VA450 End section Functionality
VA450 End section Functionality Float function workport B Float function workport A • End section functions • Float function – Opens a connection between workports and tank to e.g., allow an implement to freely float on rough terrain. • Oil circulation – Opens a connection from pump to either the ta
Slide 21: VA450 Manifold integration
VA450 Manifold integration Customization • Customer unique manifolds • Designed completely in accordance with the customer’s specific needs regarding functionality, such as feed- and control functions for brake-, steering, suspension, cooling controls etc. • Consists of high-quality components from
Slide 22: VA450 Online configurator
VA450 Online configurator eSyber • Online configurator with all information for the unique valve available in one place: • Code report • Hydraulic schematics • Spare parts list • 3D-model • 2D-drawing • Learn More files for each function 22