LDPR-08
A cartridge-style direct-acting
spool-type pressure reducing/
relieving valve
SYMBOL
PRESSURE DROP VS.FLOW
DESCRIPTION
In its steady state, the valve allows flow to pass bi-directionally from ② to ①，with the
spring chamber constantly drained at ③．On attainment of a pre-determined pressure
at ① , the cartridge shifts to restrict input flow at ② , thereby regulating pressure at
① . In this mode, the valve will also relieve ① to ③ at approximately 10 bar over the
reducing setting.
OPERATION
Operating Pressure
207bar
Flow
See performance chart
Internal Leakage
from②to③ 82 cc/min max. at
Δ
P 207 bar
Standard Spring Ranges
3.4 to 20.7 bar, preset:10.3bar
6.9 to 41.4 bar, preset:20.7bar
20.7 to 82.8 bar, preset:41.4bar
34.5 to 152 bar, preset: 76bar
Temperature
-40
°
F to +250
°
F(-40
°
C to +120
°
C)
Filtration
See page N-1
Fluids
Mineral-based fluids with viscosities of 7.4 to 420 cSt.
Cavity
08-3, See page M-1
Housing Material
6061-T6 aluminum alloy rated to 207bar, Steel & Ductile iron rated to 350bar
SPECIFICATIONS
32cSt oil @ 40°C
Direct-acting Pressure Reducing/
Relieving Valve
E-79
Keta Hydraulics-2023
E
TO ORDER
INSTALLATION DIMENSIONS
Unit=Millimeters
26-28.5Nm
Spring Ranges
3
=50-300psi(3.4-20.7bar)
Preset:10.3bar
6
=100-600psi(6.9-41.4bar)
Preset:20.7bar
12
=300-1200psi(20.7-82.8bar)
Preset:41.4bar
22
=500-2200psi(34.5-152bar)
Preset:76bar
3
Function
LDPR
=Direct-acting Spool-type
Pressure Reducing/Relieving Valve
1
61 3 52 4
Size
08
=08 Size
2
Optional Pressure Setting
Omit=
Standard Setting
Example:0100
=100bar
5
LDPR – 08 – * * – * / **** – * *
Adjustment
K
=1-1/2"Dia Knob
Omit =
1/4" Hex Allen Head
4
Port Size
Omit=
None
4T
=SAE4
6T
=SAE6
2G
=G 1/4
3G
=G 3/8
6
※
See page K-2 for detail of
housing
※
Other port sizes are available
E-80
Keta Hydraulics-2023
