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Description
- Size 6
- Component series 3X
- Maximum operating pressure 315 bar
- Maximum flow 32 l/min
Features
- Porting pattern according to DIN 24340 form A
- Subplates (separate order)
- External closing of the pressure compensator
- Check valve, optional
- 2 adjustment types, optional:
– Rotary knob with scale
– Lockable rotary knob with scale
Product description
General information
The flow control valve type 2 FRM is a 2-way flow control valve.
It is used for maintaining a constant flow, independent of pressure and temperature.
The valve basically consists of housing (1), rotary knob (2), orifice bush (3), pressure compensator (4) and an optional check valve (8).
Flow control valve type 2FRM 6 A…RV
(with external closing, with check valve)
In principle, the function of this valve is the same as that of valve type 2FRM 6 B…MV.
However, the flow control valve is provided with the possibility of an external closing of the pressure compensator (4) via channel P (9). The external pressure acting in channel P (9) via orifice (10), holds the pressure compensator (4) in closed position against the compression spring (6). When the connected directional valve (11) is switched over to permit flow from P to B, control is achieved as with type 2FRM 6 B. Thus, a start-up jump is avoided.
The version with pressure compensator closing can only be used for supply control.
The free return flow from channel B to channel A is directed via the check valve (8).
Attention!
The pressure loss of port P upstream of the directional valve to port A upstream of the flow control valve makes itself felt by a reduced flow.
Type 2FRM 6 A76-3X/..RV
Type code
| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | ||
| 2FRM | 6 | 6 | – | 3X | / | V | * |
| 01 | 2-way flow control valve | 2FRM |
| 02 | Size 6 | 6 |
| 03 | with closing of the pressure compensator (suppression of the start-up jump) | A |
| Adjustment type | ||
| 04 | Lockable rotary knob with scale 1) | 3 |
| Rotary knob with scale | 7 | |
| 05 | Zero position of the marking at port P | 6 |
| 06 | Component series 30 ... 39 (30 ... 39: unchanged installation and connection dimensions) | 3X |
| Flow (A → B) | ||
| 07 | up to 0.2 l/min | 0,2Q |
| up to 0.6 l/min | 0,6Q | |
| up to 1.5 l/min | 1,5Q | |
| up to 3.0 l/min | 3Q | |
| up to 6.0 l/min | 6Q | |
| up to 10 l/min | 10Q | |
| up to 16 l/min | 16Q | |
| up to 25.0 l/min | 25Q | |
| up to 32.0 l/min | 32Q | |
| 08 | With check valve | R |
| Without check valve | M | |
| Seal material | ||
| 09 | FKM seals (other seals upon request) | V |
| Observe compatibility of seals with hydraulic fluid used. | ||
| 10 | Further details in the plain text | * |
| 1) Key with material no. R900008158 is included in the scope of delivery. |
Preferred types and standard units are contained in the EPS (standard price list).
Technical data
general
| Size | 6 | |
| Weight (approx.) | kg | 1.3 |
| Installation position | any | |
| Ambient temperature range | °C | -20 … +50 |
hydraulic
| Size | 6 | ||||||||||
| Maximum operating pressure 1) | Anschluss A | bar | 315 | ||||||||
| Pressure differential Δp with free return flow B → A | See characteristic curves | ||||||||||
| Minimum pressure differential | bar | 6 … 14 | |||||||||
| Pressure stable (qV max) to Δp = 315 bar | % | ± 2 | |||||||||
| Maximum flow | l/min | 0.2 | 0.6 | 1.5 | 3 | 6 | 10 | 16 | 25 | 32 | |
| Minimum flow | up to 100 bar | l/min | 0.01 | 0.03 | 0.05 | 0.07 | 0.1 | 0.25 | |||
| up to 315 bar | l/min | 0.03 | 0.05 | 0.07 | 0.1 | 0.05 | |||||
| Hydraulic fluid | Mineral oil (HL, HLP) according to DIN 51524, other hydraulic fluids on request | ||||||||||
| Hydraulic fluid temperature range | °C | -20 … +80 | |||||||||
| Viscosity range | mm²/s | 10 … 800 | |||||||||
| Maximum admissible degree of contamination of the hydraulic fluid 2) | Class 20/18/15 according to ISO 4406 (c) | ||||||||||
| 1) | In applications with rectifier sandwich plate up to 210 bar |
| 2) | The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter. |
(For applications outside these values, please consult us!)
Diagrams/characteristic curves
(measured with HLP46, ϑOil = 40 ±5 °C)
Flow dependent on the scale setting (flow control A → B)
Δp-qV characteristic curve via check valve (B → A) orifice closed
pE-qV characteristic curve
Temperature dependency at Δp = 20 bar
Symbols/Circuit diagrams
| Simplified | Detailed | |
| without check valve; with external closing Type 2FRM 6 A…MV |  |  |
| with check valve; with external closing Type 2FRM 6 A…RV |  |  |
Dimensions
load errorDownloads
 | 2-way flow control valve, sea water resistant Data Sheet | RE28163-M | 2000-08-01 | English | PDF | 32k Product Groups: Flow control valves rotary knob operation and rectifier sandwich plate |
| 2-way flow control valve Data Sheet | RE28163 | 2015-07-01 | English | PDF | 702k Product Groups: Flow control valves Type 2FRM |
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