Catalog HY15-3502/US
Differential Area Relief Valve
Series RDH103
PC29
Check
Valves
Shuttle
Valves
Load/Motor
Controls
Flow
Controls
Pressure
Controls
Logic
Elements
Directional
Controls
Manual
Valves
Solenoid
Valves
Proportional
Valves
Coils &
Electronics
Bodies &
Cavities
Technical
Data
SH
CV
LM
FC
PC
LE
DC
MV
SV
PV
CE
BC
TD
Parker Hannifin Corporation
Hydraulic Cartridge Systems
Technical Information
Specifications
Rated Flow 75 LPM (20 GPM)
Maximum Inlet 380 Bar (5500 PSI)
Pressure
Maximum 350 Bar (5000 PSI)
Pressure Setting
Maximum Tank 350 Bar (5000 PSI)
Pressure
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 .23 kg (0.5 lbs.)
Cavity C10-2
(See BC Section for more details)
Form Tool Rougher None
Finisher NFT10-2F
Performance Curve
Flow vs. Inlet Pressure
(Pressure rise through cartridge only)
General Description
Differential Area Relief Valve. For
additional information see Technical
Tips on pages PC1-PC6.
Features
•
Hardened, precision ground parts for durability
•
Internal mechanical stop limits poppet travel eliminating
spring solidification
•
Spherical poppets for low leakage
•
“D”-Ring eliminates backup rings
•
All external parts have yellow zinc dichromate. This
coating is ideal for salt spray applications.
•
High flow capacity
(1)
(2)
(1)
(2)
Flow (Q)
45.4
12
15.1
4
30.3
8
LPM
GPM
0
60.6
16
75.7
20
Hydraulic Oil 150 SSU @ 100°F (32 cSt)
0
1000
2000
345
414
207
276
69
138
5000
6000
PSI Bar
3000
4000
Pressure
Differential Area Relief Valve
Series RDH103
Catalog HY15-3502/US
PC30
Check
Valves
Shuttle
Valves
Load/Motor
Controls
Flow
Controls
Pressure
Controls
Logic
Elements
Directional
Controls
Manual
Valves
Proportional
Valves
Coils &
Electronics
Technical
Data
SH
CV
LM
FC
PC
LE
DC
MV
SV
PV
CE
BC
TD
Bodies &
Cavities
Solenoid
Valves
Parker Hannifin Corporation
Hydraulic Cartridge Systems
Technical Information
Dimensions
Millimeters (Inches)
Ordering Information
THIRD-ANGLE
PROJECTION
SealsPressure
Range
Adjustment
Style
Body
Material
Port
Size
Optional
Pressure
Setting
Code Seals / Kit No.
Omit “D”-Ring / (SK10-2)
N Nitrile / (SK10-2N)
V Fluorocarbon / (SK10-2V)
Code Pressure Range
10 6.9 - 69 Bar (100 - 1000 PSI)
Standard Setting:
34.5 Bar (500 PSI)
@ .95 LPM (.25 GPM)
20 34.5 - 138 Bar (500 - 2000 PSI)
Standard Setting:
69 Bar (1000 PSI)
@ .95 LPM (.25 GPM)
30 34.5 - 207 Bar (500 - 3000 PSI)
Standard Setting:
103.5 Bar (1500 PSI)
@ .95 LPM (.25 GPM)
50 34.5 - 345 Bar (500 - 5000 PSI)
Standard Setting:
172.4 Bar (2500 PSI)
@ .95 LPM (.25 GPM)
Code Body Material
Omit Steel
A Aluminum
Code Adjustment Style / Kit No.
F Fixed style, preset at factory.
K Knob Adjust (717784-10)
N Non-Adjustable
S Screw Adjust
T Tamper Resistant Cap (717943)
Optional Pressure Setting
Pressure ÷ 10
i.e. 235 = 2350 PSI
(Omit if standard setting is used)
Setting Range:
100 to 5000 PSI
All settings at .95 LPM (.25 GPM)
RDH103
10 Size
Differential Area
Relief Valve
* Add “A” for aluminum, omit for steel.
† Steel body only.
Code Port Size Body Part No.
Omit Cartridge Only
4P 1/4″ NPTF (B10-2-*4P)
6P 3/8″ NPTF (B10-2-*6P)
8P 1/2″ NPTF (B10-2-*8P)
6T SAE-6 (B10-2-*6T)
8T SAE-8 (B10-2-*8T)
6B 3/8″ BSPG (B10-2-6B)†
(1)
(2)
31.9
(1.26)
70.3
(2.77)
Non-Adjustable Version
Screw/Knob Version
Fixed Cap/Tamper Resistant Version
(1)
(2)
31.9
(1.26)
81.9
(3.22)
84.1
(3.31)
Ø 15.8
(.62)
1" Hex.
69-75 Nm
(51-55 lb. ft.)
Torque
(1)
(2)
78.4
(3.09)
78.4
(3.09)
7/8-14 UNF-2A
Thread
25.4 (1.00)
Dia. Knob
