System with fixed pump Constant Flow Open Centre System “CFO” Spool in neutral Activated spool Max. Pump Flow 200 bar 100 bar 50 bar “METER IN” LIFTING “METER OUT” LOWERING 50 bar 100 bar 200 bar 100 % Spool travel Typical flow characteristic Manually controled valve Constant Flow Open Centre System “CFO”

Typical flow characteristic Manual controlled valve System with variable pump Spool in mid position Activated spool Typical flow characteristic Manual controlled valve 100 % Spool travel Max. Pump Flow “METER OUT” LOWERING IN” LYFTING 200 bar 100 bar 50 bar Load-sensing system “LS” Closed Centre Valve

System with fixed pump and LS valve L90LS valve F1 + pump Constant Flow Closed center system “CFC”

THREE FUNCTIONS WITHOUT INDIVIDUAL PRESSURE COMPENSATORS System with fixed pump and LS valve 50 210 100 200 THREE FUNCTIONS WITHOUT INDIVIDUAL PRESSURE COMPENSATORS

PRESSURE COMPENSATOR INDIVIDUAL COMPENSATOR WITH PILOT STAGE INDIVIDUAL COMPENSATOR WITH PRESSURE REDUCTION FUNCTION OR FEED REDUCTION FUNCTION

THREE FUNCTION WITH INDIVIDUAL PRESSURE COMPENSATORS System with fixed pump and LS valve 50 56 6 BAR 210 106 100 206 200 THREE FUNCTION WITH INDIVIDUAL PRESSURE COMPENSATORS

Systems with fixed pump ”CFO” Energy comparison in systems Systems with fixed pump ”CFO” Systems with variable pump ”LS” P pressure P pressure Q flow Q flow

Very suitable for ”LS” systems Great demands for manoeuvrability Applications well suited for ”LS” Very suitable for ”LS” systems Great demands for manoeuvrability Arial lift Forest machine Excavator Backhoe loader Refuse collector Large wheel loader Hook loader Great demands for productivity

System with variable pump and LS Suitable when; When partial pump flow is used for individual functions At high intensity usage To create simple system solutions when a number of functions with different flow rates is demanded When system layout is spread out At simultanious operation of functions Power control and energy conservation Reduce energy losses at idling and transportation

Save energy, design advises Avoid to mix light and heavy loads from the same pump. Avoid to mix large and small flow demands from the same fixed pump. Never control max flow with line mounted restrictors. Always use the pump regulator to set maximum work pressure when you are using a variable pump. The pressure limiter of the valve needs to be set at least 30 bars above. Avoid to limit valve work port pressure with the chock valves, use the build in individual work port feed reducer. Make sure that the cylinders are correctly connected to the valve, the valve is normally adapted to the cylinder ratio.

LS - Valve Range

L90LS Features Emergency stop Individual pressure compensators Feed reducers Force control Fast acting leake tight port relief valves Counter pressure valve Built-in pilot pressure supply Wide range of spool-actuators Wide range of function adapted spools Copied load signal Fixed or variable pump

L90LS CFC-systems Pump unloading inlet LS-systems Flow/section 90 l/min, without compensator 130 l/min Nodular iron Max pressure 320 bar Stackable 1 to 10 sections Service ports G1/2 7/8” - 14UN Two speed control Lever release function Pump unloading inlet Built-in main & port relief valves Built-in feed reducers Copy spool function Function manifolds Spool actuators manual pneumatic prop & on-off hydraulic electro-hydraulic prop & on-off Pressure compensators Application adapted spools

L90LS Applications Customers Forest machines Articulated truck cranes Fork lifts Excavators Refuse vehicles Skip loaders Drill rigs Customers SISU Logging F Weyhausen Schaeff Atlas Copco Pel Job

K170LS/K220LS Features Individual pressure compensators Feed reducers Force control Fast acting leak tight port relief valves Counter pressure valve Built-in pilot pressure supply Wide range of function adapted spools Copied load signal Intermediate sections Mid-inlet

K170LS/K220LS LS-systems Built-in main & port relief valves Flow/section 170 l/min, without compensator 210 l/min Nodular iron Max pressure 320 bar Stackable 1 to 10 sections Motorports G3/4 1 1/16” - 12UN SAE 1” Built-in main & port relief valves Built-in feed reducers Copy spool function Spool actuators hydraulic electro-hydraulic prop & on-off Pressure compensators Application adapted spools Intermediate sections

K170LS/K220LS Applications Forest machines Excavators Backhoe loaders Reach stackers Wheel loaders Fork lifts Customers Timberjack Volvo Barko Ponsse Kalmar LMV

HV08 Features Optional unloading valve in the inlet section Flow force pressure compensation Feed reducers Force control Fast acting leak tight port relief valves Counter pressure valve Wide range of function adapted spools Copied load signal Anti-priority function

HV08 CFC-systems LS-systems Max flow/section 320 l/min Grey & nodular iron Max pressure 320 bar Stackable 1 to 6 sections Service ports SAE 1” Built-in main & port relief valves Built-in feed reducer Copy spool function Spool actuators manual pneumatic prop & on/off hydraulic electro-hydraulic prop & on-off Application adapted spools Anti priority function

HV08 Applications Customers Reach stackers Articulated dump trucks Mobile cranes Forest machines Customers Volvo Kalmar LMV SMV Lansing

M400LS Features Poppet design zero leakage not sensitive to temperature shocks Fast acting leak-tight port relief valves Counter pressure valve Function adapted spools Low pressure drops high function speed low energy consumption Priority function Easy to install Dual cylinder ports

M400LS LS-systems Built-in port relief valves Flow/section 450 l/min Nodular iron Max pump pressure 300 bar Max service port pressure 400 bar Monoblock 2-section Connections Pump, 2 x 1 1/4 “ Tank, 1 x 1 1/2” Service ports, 8 x 1” Built-in port relief valves Built-in counter pressure valve Spool actuators PC FPC Built-in pressure-controlled float position function Priority function Poppet-valve concept Application adapted spools

M400LS Applications Customers Wheel loaders Reach stackers Mobile cranes Forest machines Excavators Customers Volvo Ljungby Machine Luna

CFC INLET SECTION + SPOOL SECTION L90LS T L.S. P COMPENSATOR (K) DIRECTION CONTROL SPOOL LOGIC CHECK VALVE INDIVIDUAL PRESSURE REDUCTION FUNCTIONS A B BYPASS RELIEF FUNCTION EMERGENCY STOP (BEN) CFC INLET SECTION + SPOOL SECTION

L90LS Inlet section Inlet Compensator, Emergency Stop Function PX PL Inlet Compensator, Emergency Stop Function and Main Relief Valve With Pilot Assembly

L90LS LS2 Inlet Section Showing Direct Acting Fixed Setting Relief Valve Cartridge

LS1 Inlet Section Showing Copy L90LS PILOT STAGE MAIN STAGE B A T T COMPENSATOR (K) DIRECTION CONTROL SPOOL INDIVIDUAL PRESSURE REDUCTION FUNCTIONS COPY SPOOL L.S. LOGIC CHECK VALVE L.S. P P P.X. L.S. P.L. LS1 Inlet Section Showing Copy Spool Function

Inlet Section Showing Copy Spool Function L90LS LS PX PL Inlet Section Showing Copy Spool Function

L90LS Single Spool Valve EC Operated B PS T L.S. P L.S.P. P2 TP MP T3 COUNTER PRESSURE VALVE Single Spool Valve EC Operated Showing Service Line Relief / Anti- cavitation Cartridges & Counter-pressure valve in Outlet Section

L90LS Outlet Section T2/MP T3 TP PS LSP Outlet Section Showing Pressure Reducing For Pilot Supply and Counterpressure Valve

Load sense valve LS and/or CFC L90LS Load sense valve LS and/or CFC Spool in neutral position

Load sense valve LS and/or CFC L90LS Load sense valve LS and/or CFC Spool in outer position *PBAT = Pump to motorport B. Motorport A to tank.

Metering to Motor Port Versus Spool Stroke L90LS 25 50 75 100 20 40 60 80 100% FLOW (LPM) SPOOL STROKE Metering to Motor Port Versus Spool Stroke

DIFFERENTIAL PRESSURE ( Bar ) L90LS 20 40 60 80 100 200 300 FLOW (LPM) DIFFERENTIAL PRESSURE ( Bar ) Performance of Individual Compensator Against Differential Pressure from Valve Inlet to Motor Port

with pressure feedback on B-side L90LS Load sense valve LS and/or CFC with pressure feedback on B-side *PBAT = Pump to motorport B. Motorport A to tank.

Load sense valve LS and/or CFC L90LS Load sense valve LS and/or CFC with LS-logic *PBAT = Pump to motorport B. Motorport A to tank.

Two spool valve with M10 manifold L90LS T L.S. P PS T2 L.S.P. P2 T3 TP A B Two spool valve with M10 manifold

L90LS M10 Manifold Section

L90LS FEATURE ADVANTAGE BENEFIT STACKABLE VALVE. FLEXIBILITY. EASIER TO INSTALL. CHEAPER TO SERVICE. MODULAR CONSTRUCTION. SIMPLIFICATION FEWER EXTERNAL COMPONENTS. RELIABILITY. EASIER TO INSTALL SYSTEM. LOAD SENSING WITH VARIABLE PUMP. SIMPLE DESIGN HIGHER MACHINE PERFORMANCE. HIGHER WORKING CAPACITY. BETTER FUEL ECONOMY. OPTIMISED PERFORMANCE. EASIER TO RETROFIT OTHER FUNCTIONS EMERGENCY STOP. EASIER TO MEET EC DIRECTIVES. LOWER OVERALL COST. IMPROVED SAFETY. IMPROVED RELIABILITY. PRESSURE COMPENSATION. SIMPLE SYSTEM DESIGN & ASSEMBLY. INDIVIDUAL MAX. SPEEDS. NO INTERFERENCE BETWEEN FUNCTIONS. FEED REDUCER EASY TO SET DIFFERENT FORCE LEVELS. EASILY INSTALLED INCREASED EFFICIENCY. SAFER OPERATION. LOWER INSTALLATION COST

L90LS FEATURE ADVANTAGE BENEFIT LESS RISK OF CAVITATION FORCE CONTROL IMPROVED STABILITY & SAFETY LESS WEAR & GREATER EFFICIENCY. LOWER RUNNING COSTS. MORE GENTLE MACHINE CHARACTERISTICS . PREVENTS HIGH PEAK PRESSURES. PORT RELIEF’S CAN BE SET CLOSE TO MAX. WORKING PRESSURE. LESS STRESS ON MACHINE COMPONENTS. IMPROVED RELIABILITY.. COUNTER - PRESSURE VALVES LESS RISK OF CAVITATION SIMPLY TO INSTALL. ENABLES UNLOADED LOWERING. IMPROVED MACHINE PERFORMANCE. LESS RISK OF CYLINDER OR MOTOR DAMAGE. IMPROVED FUEL ECONOMY PROVISION FOR EXTERNAL PILOT FILTER GREATER FLEXIBILITY. EASIER TO KEEP PILOT SYSTEM COMPLETELY CLEAN. IMPROVED RELIABILITY. LOWER INSTALLATION COST FAST ACTING LEAK TIGHT PORT RELIEF VALVES FUNCTION ADAPTED SPOOLS EASY TO OPTIMISE PERFORMANCE WITH FEWER COMPONENTS IMPROVED CONTROLLABILITY, SAFETY & RELIABILITY. PILOT PRESSURE SUPPLY. SIMPLE SYSTEM ASSEMBLY. COST.