Catalog HY15-3502/US
Direct Acting Relief Valve
Series RDH082
PC11
Check
Valves
Shuttle
Valves
Load/Motor
Controls
Flow
Controls
Pressure
Controls
Logic
Elements
Directional
Controls
Manual
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Solenoid
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Proportional
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Coils &
Electronics
Bodies &
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Technical
Data
SH
CV
LM
FC
PC
LE
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PV
CE
BC
TD
Parker Hannifin Corporation
Hydraulic Cartridge Systems
Technical Information
Specifications
Rated Flow 30 LPM (8 GPM)
Maximum Inlet 380 Bar (5500 PSI)
Pressure
Maximum 350 Bar (5000 PSI)
Pressure Setting
Reseat Pressure 85% of crack pressure
Leakage at 5 drops/min. (.33 cc/min.)
150 SSU (32 cSt) @75% of crack pressure
Cartridge Material All parts steel. All operating
parts hardened steel.
Operating Temp. -45°C to +93.3°C (“D”-Ring)
Range/Seals (-50°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 .18 kg (.40 lbs.)
Cavity C08-2
(See BC Section for more details)
Form Tool Rougher None
Finisher NFT08-2F
Performance Curve
Flow vs. Inlet Pressure
(Pressure rise through cartridge only)
General Description
Direct Acting Poppet-Type Relief Valve. For additional
information see Technical Tips on pages PC1-PC6.
Features
•
Hardened, precision ground parts for durability
•
Fast response
•
Spherical poppets for low leakage
•
Internal mechanical stop limits poppet travel eliminating
spring solidification
•
All external parts have yellow zinc dichromate. This
coating is ideal for salt spray applications.
•
Polyurethane “D”-Ring eliminates backup rings and
prevents hydrolysis
Flow (Q)
23
6
8
2
15
4
LPM
GPM
0
30
8
Hydraulic Oil 150 SSU @ 100°F (32 cSt)
0
1000
2000
3000
345
414
276
69
138
207
Pressure, PSI
5000
6000
PSI Bar
4000
(2)
(1)
(1)
(2)