Catalog HY15-3501/US
LM29
Load Control Valve
Series E6K020
Parker Hannifin Corporation
Hydraulic Cartridge Systems
Check
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BC
TD
General Description
Threaded Cartridge Style Counterbalance Valve.
Pilot assisted, designed for motion control
applications. For additional information see
Technical Tips on pages LM1-LM4.
Features
•
Spring chamber isolated from system backpressure by
double seal, eliminating vent port leakage and need for
separate drain line
•
Poppet construction for minimal leakage
•
Suitable for remote pilot controlled boomlock applications
as per ISO8463
•
Incorporates direct acting relief valve for overload
protection
•
Includes reverse check valve within body
•
Hardened working parts for maximum durability
•
Adjustable and tamper resistant versions available
•
All external parts zinc plated
Specifications
Technical Information
Performance Curves
Rated Flow 20 LPM (5.3 GPM)
Pressure 100 - 350 Bar (1450 - 5075 PSI)
Sensitivity: 114 Bar (1650 PSI)
Pressure/Turn
Pilot Ratio 15 : 1
Cartridge Material All parts steel. All operating
parts hardened steel.
Operating Temp. -40°C to +93.3°C (Nitrile)
Range/Seals (-40°F to +200°F)
-31.7°C to +121.1°C (Fluorocarbon)
(-25°F to +250°F)
Fluid Mineral-based or synthetic with
Compatibility/ lubricating properties at viscosities
Viscosity of 45 to 2000 SSU (6 to 420 cSt)
Filtration ISO Code 16/13,
SAE Class 4 or better
Approx. Weight 0.08 kg (0.18 lbs.)
Cavity 53-1
(See BC Section for more details)
Flow (Q)
10
2.6
5
1.3
LPM
GPM
0
15
4.0
20
5.3
Hydraulic Oil 150 SSU @ 100°F (32 cSt)
0
1450
400
200
300
100
5800
PSI Bar
2900
4350
Pressure Drop Bar, PSI
Relief & Pilot Performance 1 to 2
RELIEF
PILOT PRESSURE WITH
100 BAR LOAD
Flow (Q)
10
2.6
5
1.3
LPM
GPM
0
15
4.0
20
5.3
Pressure Drop vs Flow
Hydraulic Oil 150 SSU @ 100°F (32 cSt)
0
73
20
10
15
5
290
PSI Bar
145
218
PressurDrop Bar, PSI
FREE FLOW
2 to 1
PILOTED OPEN
1 to 2
(1)
(2)
(3)
(2)
(3)
(1)