RE 18321-31/06.2017, Bosch Rexroth Oil Control S.p.A.
Flow control, 2-way pressure compensated,
Fixed setting
Special cavity, R/MH2FR04K
RE 18321-31
Edition: 06.2017
Replaces: 04.2016MH2FR
Technical data
General
Weight 0.03kg (0.07lbs)
Installation position Any
Ambient temperature range -30 to 100°C (-22 to 212°F) NBR
-15 to 100 °C (5 to 212°F) FKM
Hydraulic
Max. operating pressure 420bar (6090psi)
Rated flow 0.4 - 0.7 - 1.2 l/min.
Fluid temperature range -20 to 80°C (-4 to 176°F)
Fluids: Mineral-based or synthetics with lubricating properties at
viscosities of 10 to 800 mm
2
/s (cSt)
Installation torque 20 - 25 Nm (15 - 19 ft-lbs)
Filtration Class 20/18/15 ISO 4406
Special cavity R/MH2FR04K
Note: The valves are not provided with any surface protection.
Description
The valve type MH2FR is a 2-way flow control valve for
block design installation. It is used for pressure and
temperature independent flow stabilization. If the direction
of flow runs from 1 to 2 through the valve, the pressure in
channel 1 exerts force on the pressure compensator. The
pressure compensator moves to the control position until
the forces are balanced. If the pressure in channel 1 or 2
changes, the pressure compensator keeps readjusting and
thereby maintains a constant pressure drop and the
unchanging cross-section of the throttling point provide for
a constant flow. In the direction of flow from 2 to 1, the
return flow runs freely via the throttling point.
Characteristic curve
At the beginning of control (8 bar), the stated flow is
present with a tolerance of +35% / -5%