Catalog HY15-3501/US
Parker Hannifin Corporation
Hydraulic Cartridge Systems
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
PV13
N.O. Proportional Relief Valve
Series ERV121NTechnical Information
Performance Curves
General Description
Normally Open Proportional Relief Valve. For normally
closed version, consult factory. For additional informa-
tion see Technical Tips on pages PV1-PV6.
Features
•
On-off type solenoids
•
Low hysteresis
•
PWM signal preferred
•
Manual override standard
•
All external parts zinc plated
Specifications
Rated Flow 100 LPM (25 GPM)
Valve Fully Open at 7 Bar (100 PSI) ∆P
(De-energized)
Maximum Inlet 210 psi (3000 PSI)
Pressure
Hysteresis 8%
@ 200 Hz PWM
Cracking 10% - 25% of Input signal
(Dead band)
Frequency 100 - 400 Hz (200 Hz Preferred)
Maximum Control 12VDC 24VDC
Current 1.61A .84A
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 .32 kg (0.7 lbs.)
Cavity C12-2
(See BC Section for more details)
Form Tool Rougher None
Finisher NFT12-2F
(1) (2)
(1)
(2)
1.8A
1.2A
0.6A
Hydraulic Oil 150 SSU @ 100°F (32 cSt)
0
3000 207
138
69
2000
PSI Bar
1000
Flow (Q) - 12 VDC, High Watt Coil 200 Hz
80
20
20
5
40
10
60
15
LPM
GPM
0
100
25
120
30
Pressure Override
Pressure Drop ( P)
100 LPM
(25.0 GPM)
24 LPM
(6.0 GPM)
Time (MS)
12 VDC, High Watt Coil 200 Hz @ 2.4 A
210 Bar (3000 PSI) Inlet Pressure
25 MS
0
3000 207
69
138
Pressure
PSI Bar
1000
2000
Step Response
Hydraulic Oil 150 SSU @ 100°F (32 cSt)
12 VDC, High Watt Coil 200 Hz (PWM)
1.0 1.2.2 .4 .6 .80 1.4 1.6 1.8
Pressure Gain
0
1000
3000 207
138
69
2000
PSI Bar
Pressure Drop ( P)
A
20 LPM
(5.0 GPM)
120 LPM
(25.0 GPM)
Hydraulic Oil 150 SSU @ 100°F (32 cSt)
0
75
100
125
150
5.2
6.9
8.6
10.3
3.5
1.7
50
PSI Bar
25
Pressure Drop vs. Flow
Pressure Drop ( P)
Flow (Q)
80
20
20
5
40
10
60
15
LPM
GPM
0
100
25
120
30
Catalog HY15-3501/US
Parker Hannifin Corporation
Hydraulic Cartridge Systems
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
N.O. Proportional Relief Valve
Series ERV121N
PV14
Technical Information
Dimensions
Millimeters (Inches)
Ordering Information
THIRD-ANGLE
PROJECTION
SealsOverride
Option
Coil
Voltage
Coil
Termination
Body
Material
Port
Size
Code Coil Voltage
Omit Cartridge without Coil
D012 12 VDC
D024 24 VDC
Code Seals / Kit. No.
Omit Nitrile / (SK12-2)
V Fluorocarbon / (SK12-2V)
Code Coil Termination
Omit Cartridge without Coil
D DIN
P Dual Spade
S Dual Screw
W Dual Wire
Code Override Options
M Push Type with
Flush Rod
Code Body Material
Omit Steel
A Aluminum
See DS Coil 5/8
″″
″″
″
I.D. (High Watt)
ERV121N25
Size 12
N.O. Proportional
Relief Valve
Code Port Size Body Part No.
12P 3/4″ NTPF (B12-2-*12P)
8T SAE - 8 (B12-2-*8T)
12T SAE - 12 (B12-2-*12T)
* Add “A” for aluminum, omit for steel.
M
84.1
(3.31)
40.1
(1.58)
Ø 22.2
(.87)
(1)
(2)
1 1/16-12 UN-2A
Thread
40.6
(1.60)
See DS Coil 5/8" I.D.
Information For
Terminal Connectors
31.8
(1.25)
124.2
(4.89)
4.1 Nm
(3 lb. ft.)
Torque
1-1/4" Hex.
29 Nm
(21 lb. ft.)
Torque
