LM7
Catalog HY15-3501/US
Counterbalance Valve
Series MHC-010
Parker Hannifin Corporation
Hydraulic Cartridge Systems
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Specifications
Technical Information
Rated Flow 37.5 LPM (10 GPM)
Maximum 350 Bar (5000 PSI)
Inlet Pressure
Leakage at 5 drops/min. (.33 cc/min.) @
150 SSU (32 cSt) 80% of thermal crack pressure
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 .38 kg (.88 lbs.)
Cavity CDD-1010
(See BC Section for more details)
Form Tool FR-500
General Description
Threaded Cartridge Style Counterbalance Valve.
For additional information see Technical Tips
on pages LM1-LM4.
Features
•
Conical Poppet design provides longer metering stroke
for stable operation
•
Hardened seat provides reliable load holding
•
External vent option available for high back pressure
applications
•
Tamper resistant cap for added safety and security
•
Various pilot ratios available for application flexibility
•
Unique cavity prevents other valves from being
“accidentally” installed
•
All external parts zinc plated
Construction
Performance Curve
Flow vs. Pressure Drop (Through cartridge only)
Single
Non-
Vented
Work Port
Pilot
Port
Valve Port
Dual
Non-
Vented
CC
V
V
Hydraulic Oil 150 SSU @ 100°F (32 cSt)
0
200
1000 68.9
27.6
41.4
55.2
13.8
Pressure Drop
400
600
800
PSI Bar
Flow (Q)
56.3
15
37.5
10
18.8
5
LPM
GPM
0
75
20
93.8
25
Controlled
Flow
Free Flow
MHC-010-V*S* Vented Counterbalance Adjustable
Work Port
External Vent Port
Pilot
Port
Valve Port
MHC-010-S*N* Non-Vented Counterbalance Non-Adjustable
Pilot
Port
Valve Port
Work Port
MHC-010-V*N* Vented Counterbalance Non-Adjustable
Work Port
Valve Port
Pilot
Port
External Vent Port
MHC-010-S*S* Non-Vented
Counterbalance Adjustable
Valve
Port
Work
Port
Pilot
Port