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E51180 pages
Up to 97 l/min
Up to 350 bar
E 5.118.7/01.13
FUNCTION
210
The SRE is a pressure compensated flow
control valve which maintains a constant
outlet flow by means of a control function.
The flow rate is largely independent of the
pressure and viscosity.
The valve has a fixed orifice with pressure
compensator spool. The measuring
orifice determines the setting range for
the flow rate which can be adjusted over
a small range. If oil is flowing from 1 to 2,
a pressure drop occurs at the measuring
orifice. The pressure compensator moves
into the control position which corresponds
to the force equilibrium. This is created
by the pressure drop acting on the control
piston area overcoming the spring force.
As the flow rate increases (greater
pressure drop), the diameter of the control
orifice is reduced until the forces are equal
again. A constant flow rate is therefore
achieved. In the reverse direction there is
free flow through the valve.
Important: if the required control pressure
differential is not reached, the valve
operates as a non-compensated flow
control valve.
2-Way Flow Regulator
Pressure Compensated
Direct-Acting
Cartridge – 350 bar
SRE 1 to 4
FEATURES
zz For regulating the speed of loads independently of the pressure
zz For limiting the max. speed of lifting gear (in compliance with accident prevention
regulations)
zz For limiting the flow rate for control oil circuits in the main circuit and offline
zz Hardened and ground valve components to ensure minimal wear and extended
service life
zz Choice of four sizes for optimum adaptability to the system
zz Space-saving installation
zz Unauthorized adjustment not possible since not accessible once fitted
SPECIFICATIONS
Operating pressure:
Nominal flow:
Media operating temperature range:
Ambient temperature range:
Operating fluid:
Viscosity range:
Filtration:
MTTFd:
Installation:
Materials:
Cavity:
Weight:
max. 350 bar
SRE1 0.6 to max. 10 l/min
SRE2 1.0 to max. 20 l/min
SRE3 1.7 to max. 48 l/min
SRE4 27 to max. 97 l/min
min. -30 °C to max. +100 °C
min. -30 °C to max. +100 °C
Hydraulic oil to DIN 51524 Part 1 and 2
min. 2.8 mm²/s to max. 380 mm²/s
Class 21/19/16 according to ISO 4406 or
cleaner
150 years (see "Conditions and
instructions for valves" in brochure 5.300)
No orientation restrictions, preferably
horizontal
Valve body: steel
05520, 08520, 10520, 12520
SRE1= 0.013 kg SRE2= 0.025 kg
SRE3= 0.049 kg SRE4= 0.112 kg
