Parker Hannifin Corporation
Hydraulic Cartridge Systems
Catalog HY15-3502/US
Direct Acting Relief Valve With Check
Series RDCH103
PC31
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
Specifications
Technical Information
Maximum Flow 60 LPM (16 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.
Body Material 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 1.2 kg (2.7 lbs.)
Performance Curve
Flow vs. Inlet Pressure
(Pressure rise through cartridge only)
General Description
Direct Acting Relief Valve with Reverse
Free Flow Check Valve. For additional
information see Technical Tips on
pages PC1-PC6.
Features
•
Hardened, precision ground parts for durability
•
Rugged steel body construction
•
Spherical poppets for low leakage
•
Built-in cartridge check reduces plumbing
•
Differential area cartridge relief for high flow capacity
•
All external parts have yellow zinc dichromate. This
coating is ideal for salt spray applications.
•
“D”-Ring eliminates backup rings
ValveCyl.
Free Flow
Flow At Relief Setting
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
Relief Flow Outlet
Free Flow Inlet
Relief Flow Inlet
Free Flow Outlet
RDH103
Cartridge
CVH103 Series Check Valve
Direct Acting Relief Valve With Check
Series RDCH103
Parker Hannifin Corporation
Hydraulic Cartridge Systems
Catalog HY15-3502/US
PC32
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
THIRD-ANGLE
PROJECTION
Ordering Information
Technical Information
Dimensions
Millimeters (Inches)
Pressure
Range
Adjustment
Style
SealsCheck Valve
Cracking
Pressure
Code Port Size Part No.
8T SAE-8 830313
Code Adjustment Style / Kit No.
F Fixed style, preset at factory.
K Knob Adjust (717784-10)
S Screw Adjust
T Tamper Resistant Cap
(717943)
RDCH103
10 Size
Direct Acting Relief Valve
With Reverse Flow Check
0.8
(.03)
Max.
15.9
(.62)
51.1
(2.01)
76.2
(3.00)
V
31.8
(1.25)
15.9
(.63)
41.4
(1.63)
RV1
Ø 7.1 (.28) Thru
Mounting Hole
(2) Holes
78.4
(3.09)
Max.
31.8
(1.25)
38.1
(1.50)
22.2
(.88)
36.1
(1.42)
63.5
(2.50)
CV1
Screw Option Shown
RV1
15.9
(.63)
10.4
(.41)
19.1
(.75)
18.3
(.72)
CYL
CV1
Port
Size
Optional
Pressure
Setting
Code Cracking Pressure
Omit 0.3 Bar (5 PSI)
P20 1.4 Bar (20 PSI)
P50 3.5 Bar (50 PSI)
P65 4.5 Bar (65 PSI)
P100 6.9 Bar (100 PSI)
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)
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)
Individual body requires 1 SAE 5 plug.
Part number 5 HP50N-S.
