2-way flow control valve,Type 2FRM for Rexroth
- Porting pattern to DIN 24 340, from A,ISO4401 and CETOP-RP 121H
- Pressure compensator stroke limiter, optional
- Decrease of start-up jump
- Flow control in both directions using a recti-fier sandwich plate
- Lockable rotary knob
Product features
◉ Porting pattern to DIN 24 340, from A,ISO4401 and CETOP-RP 121H
◉ Pressure compensator stroke limiter, optional
◉ Decrease of start-up jump
◉ Flow control in both directions using a recti-fier sandwich plate
◉ Lockable rotary knob
Functional section
The 2FRM flow valve is a 2-way flow control valve. It mainly consists of housing(1),setting element(2).orifice(3)pressure compensator(4)optionally with stroke limiter as well as check valve(5) and is used for the throttling of a flow at low pressure and temperature dependency.
The throttling cross section is set by the roration of the curve bolt(7). To keep the flow constant independent from the pressure at the throttling point(8) a pressure compensator (4)is connected. The temperation independance is the result of the throttling point being constructed as an orifice.
The free flow retum from B to A is via the check valve(5).
In order to reach a controlled through flow of the valve in either direction there is the possibility to install a rectifier sandwich plate type Z4S below the flow control valve.
Technical data
(for applications outside these parameters, please consult us)
|
Parameter |
Specification |
|
Hydraulic fluid |
mineral oil (HL, HLP) or Phosphate ester (for FKM seals) |
|
Temperature range (°C) |
-30 --- + 80 |
|
Viscosity range (mm²/s) |
10 --- 800 |
|
Parameter |
Unit |
Value |
|
Flow, max |
(L/min) |
15 |
|
Operating pressure |
(MPa) |
up to 21 |
|
Cracking pressure |
(MPa) |
0.1 |
|
Weight |
(Kg) |
0.6 |
|
Flow q, max (L/min) |
0.2 |
0.6 |
1.2 |
3.0 |
6.0 |
10.0 |
15.0 |
|
Δp with free return flow B → A, qv -dependent (MPa) |
0.05 |
0.05 |
0.06 |
0.09 |
0.18 |
0.36 |
0.67 |
|
Flow control |
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|
temperature-stable |
± 5% |
± 3% |
± 2% |
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|
pressure-stable (up to Δp = 21.0 MPa) |
± 2% |
± 4% |
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|
Operating pressure, max - port A (MPa) |
to 21 |
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|
Minimum pressure difference range (MPa) |
0.3 to 0.5 |
0.6-0.8 |
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|
Degree of contamination (µm) |
25 (Q < 5L/min) |
10 (Q < 0.5L/min) |
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|
Weight (Kg) |
1.6 |
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Characteristic curves
2-way flow control valve (measured at ν = 41 mm²/s and t = 50°C)
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