LDPC-08
A cartridge-style dual pilot-
operated check valve
SYMBOL
The valve will block flow from ① to ② , and from ④ to ③ . Flow is allowed in the
opposite direction when pressure is applied to port ② and/or ③ . The valve has a 2.5:1
pilot ratio, so at least 40 percent of the load pressure at port ① or ④ is required at the
pilot lines (port ③ or ② )to open the flow passage to allow flow from port ① or ④ .
PRESSURE DROP VS.FLOW
OPERATIONDESCRIPTION
Operating Pressure
207bar
Flow
See PRESSURE DROP VS.FLOW graph.
Check Valve Leakage
2 drops/min. at 207bar
Cracking Pressure
0.4=0.4bar
3.4=3.4bar
Pilot Ratio
2.5:1
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
08-4,See page M-1
Housing Material
6061-T6 aluminum alloy rated to 207bar, Steel & Ductile iron rated to 350bar
SPECIFICATIONS
ķ
ĸ
Ĺ
ĺ
32cSt oil @ 40°C
Dual Pilot-operated Check Valve
D-67
Keta Hydraulics-2023
D
Cracking Pressure
0.4
=0.4bar
3.4
=3.4bar
TO ORDER
1354.71.3
26-28.5Nm
TORQUE
(22.2)HEX
Unit=Millimeters
INSTALLATION DIMENSIONS
1 432
LDPC – 08 – * * – * *
Port Size
Omit=
None
4T
=SAE4
6T
=SAE6
2G
=G 1/4
3G
=G 3/8
43
Function
LDPC
=Dual Pilot-operated
Cartridge Check Valve
Size
08
=08 Size
1
2
※
See page K-13 for detail of
housing
※
Other port sizes are available
D-68
Keta Hydraulics-2023
