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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)
- As threaded port for control panel installation with connection thread G3/8
- 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 SB…RV
(without external closing, with check valve, with threaded connectionfor control panel installation)
The flow from channel A to channel B is throttled at the throttling point (5). The throttle cross-section is set by turning the rotary knob (2).
To ensure a pressure-independent and constant flow in channel B, a pressure compensator (4) is fitted downstream of the throttling point (5).
The compression spring (6) presses the pressure compensator (4) downwards against its stop and keeps the pressure compensator (4) in the open position when there is no flow through the valve. When fluid flows through the valve, the pressure acting in channel A applies a force to the pressure compensator (4) via orifice (7).
The pressure compensator (4) moves into the controlled position until the forces balance. If the pressure in channel A rises, the pressure compensator (4) moves in the closing direction until the forces are balanced again. Due to this continuous compensation of the pressure compensator (4), a constant flow is obtained.
The free return flow from channel B to channel A is directed via the check valve (8).
Type 2FRM 6 SB76-3X/..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 | without closing of the pressure compensator for control panel installation | 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 | 1.5 |
| 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; without external closing Type 2FRM 6 SB…MV |  |  |
| with check valve; without external closing Type 2FRM 6 SB…RV |  |  |
Dimensions
Threaded port for control panel installation – version "SB"
Dimensions in mm
| 1 | Adjustment type "3" (lockable rotary knob with scale) |
| 2 | Adjustment type "7" (rotary knob with scale) |
| 4 | Space required to remove the key |
| 6 | Name plate |
| 9 | Connection thread G3/8 according to ISO 228-1 |
| 10 | Position of the marking vis-à-vis name plate |
Control panel installation:
Valve mounting screws (separate order)
4 hexagon socket head cap screws
ISO 4762 - M5 - 8.8-flZn-240h-L
at friction coefficient μtotal = 0.09 to 0.14,
Tightening torque MA = 7 Nm ± 10 %,
(minimum usable thread depth = 6.5 mm)
Subplates (separate order)
Type G 341/01 (G1/4)
Type G 342/01 (G3/8)
Type G 502/01 (G1/2)
Downloads
 | 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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