Catalog HY15-3502/US
Direct Acting, Unloading Pilot Relief Valve
Series M04A4J
PC71
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
General Description
Direct Acting, Spool-Type, Unloading Relief Valve with
Internal Pilot. For additional information see Technical
Tips on pages PC1-PC6.
Features
•
Use to unload a load sense pump in an accumulator
circuit
•
One size unloading valve for all flow size applications
•
Hardened working parts for maximum durability
•
Adjustable and tamperproof versions available
•
All external parts zinc plated
Rated Flow 2 LPM (0.53 GPM)
Maximum Inlet 420 Bar (6000 PSI)
Pressure
Maximum 200 Bar (2900 PSI)
Pressure Setting
Maximum Tank 420 Bar (6000 PSI)
Pressure
Leakage at 25 ml/min.
150 SSU (32 cSt) @ 100 Bar (1450 PSI)
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 0.33 kg (0.73 lbs.)
Cavity C10-4
(See BC Section for more details)
Form Tool Rougher None
Finisher
Performance Curve
Accumulator Circuit
(4)
(1)
(2)
(3)
(3)
(4)
(1)
(2)
Application
Pressure
Time
SCAN
Unload
Pressure
Reload
Pressure
PUMP PRESSURE
ACCUMULATOR PRESSURE
Direct Acting, Unloading Pilot Relief Valve
Series M04A4J
Catalog HY15-3502/US
PC72
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
Reload
Pressure
Setting
Adjustment
Style
Reload
Pressure
Adjustment
Range
Seals
Code Seals / Kit No.
N Nitrile, Buna-N (Std.) /
(SK30530N-1)
V Fluorocarbon /
(SK30530V-1)
Code Reload Pressure
Adjustment Range
J 50 - 200 Bar (725 - 2900 PSI)
Code Adjustment Style / Kit No.
Z Screw Adjust (Std.)
T Tamper Resistant Cap (TC1130)
M04A4
10 Size
Direct Acting
Unloading
Relief Valve
Code Reload Pressure Setting
Omit Omit for standard setting
Specify setting if required
M04A4J Standard Setting:
125 Bar (1850 PSI)
J
22
(0.87) max
59.0
(2.32)
64.8
(2.55)
7/8" - 14 UNF
5 AF Hex socket
17 AF Hex.
12 Nm
(9 lb. ft.)
Torque
26 AF Hex.
50 Nm
(37 lb. ft.)
Torque
(2)
(3)
(4)
(1)
Body
Material
Port
Size
Code Body Material
Omit Steel
A Aluminum
* Add “A” for aluminum. omit for steel.
† Steel body only.
Code Port Size Body Part No.
Omit Cartridge Only
4P 1/4″ NPTF (B10-4-*4P)
6P 3/8″ NPTF (B10-4-*6P)
8P 1/2″ NPTF (B10-4-*8P)
6T SAE-6 (B10-4-*6T)
8T SAE-8 (B10-4-*8T)
T8T SAE-8 (B10-4-T8T)†
6B 3/8″ BSPG (B10-4-6B)†
