Parker L90LS Mobile Directional Control Valve Hydraulic Circuit Diagram HY17-8504

[Martin Welker]

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Parker L90LS Mobile Directional Control Valve Hydraulic Circuit Diagram HY17-8504
Size: 2.99 MB
Format: PDF
Language: English
Brand: Parker
Type of Machine: Mobile Directional Control Valve
Type of Manual: Technical Data, Hydraulic Circuit Diagram
Model: Parker L90LS Mobile Directional Control Valve
Part Number: HY17-8504
Number of Pages: 44 Pages

Contents:
General Information
Load sensing systems, LS
Technical Data
Hydraulic circuits
Inlet sections [15]
Pressure relief valve [16]
Pressure setting [17]
Differential pressure limiter, PLS [18]
Load signal system [20]
Pump-unloading function [22]
Tank connection T1 [25]
Pump connection P1 [26]
End section [30]
LS connection [31]
Pump connection P2 [32]
Counter pressure valve / tank connection T2 [33]
Tank connection T3 [34]
Internal-pilot pressure supply [37]
Pilot filter [39]
Tank connection for pilot circuit [40]
Basic variants of spool section [47]
Material i manöversektion [48]
Spool actuators [50]
Directly operated actuators, with open spool-end
ON/OFF remote-controlled actuators, with open spool-end and facility for manual control
Remote-controlled actuators, proportional spool actuators with open spool-end and facility for manual control
Lever brackets [51]
Directly operated actuators with enclosed spool-ends
Proportionally remote-controlled actuators, with enclosed spool-ends and facility for manual control
Connector types [56]
Lever bracket [51]
Pilot restrictor [55 A, B]
Spool function [60]
Flow requirements [61 A, B]
Spool symbols
Choice of spool
Area ratios [62]
Load characteristics [63]
Force feedback [64 A, B]
Pressure compensator / load-hold check valve [66]
Damping of pressure compensator [67]
Spool designations [69]
Flow settings [72]
Feed-reducing valve [75]
Setting of feed reduction in the A-port [75A]
Port relief and/or anti-cavitation valves [76 A, B]
System functions
System signal lines [80]
Individual LS connection [81]
Two-speed function [82]
Internal connection of service port [85]
Connectors
Function manifolds [90-99]
Direct Levers
Dimensional drawings
Dimensional drawings
Dimensional drawings
Dimensional drawings