Danfoss HLE10-OPO Technical Information
Logic Elements Technical Information
Spool Type
HLE10-OPO
OPERATION
OPERATION
The HLE10-OPO is a 10-size, high pressure, normally open, pilot-to-open,
spring-biased dierential-sensing logic element. It will modulate ow
from 2 to 1 based on the spring control pressure, outlet pressure at port
1, and pilot pressure at port 3. The HLE10-OPO technically replaces the
CP700-4L, but cavities are not interchangeable.
APPLICATION
Common applications include: as a pre-compensator for proportional
directional control or ow controls, as well as a pressure control valve.
A common application for this valve is as a pressure compensator
when applied with a xed, or adjustable orice to create a
pressure-compensated ow control. This ensures that ow rate,
and resulting actuator speed is maintained regardless of pressure drop across the control orice. Eective use of logic
elements is a key to designing cost-eective circuits, and is limited only by the imagination of the designer.
SPECIFICATION
Rated Pressure* 350 bar [5075 psi]
Rated Flow at 7 bar
[100 psi]
Weight 0.14 kg [0.31 lbs]
Cavity SDC10-3S
* Rated Pressure based on NFPA fatigue test standards (at 1 Million Cycles).
60 l/min
[15.8 US gal/min]
Theoretical performance
PERFORMANCE CURVE
SCHEMATIC
BC332375783111en-000101 • February 2020
LE - 45
Logic Elements Technical Information
Spool Type
HLE10-OPO
DIMENSION
mm [in]
EXAMPLE CIRCUITS
Cross-sectional view
7/8-14 UNF
3
1
68-75 Nm
2
46.8
[1.84]
19.1
[0.75]
[50-55 lbf*ft]
ORDERING
INFORMATION
Compensated Bi-directional Flow Control
Proportional Pressure Reducing Valve
*** Aluminum bodies are for use in lower pressure applications only
[less than 210 bar (3000 psi)].
HLE10-OPO
BC332375783111en-000101 • February 2020
LE - 46
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