R983032412 2FRM6B36-2X/6QRV-IN001 Speed control valve manufactured by Rexroth in Germany
Price:
Negotiable
MOQ:
1
Delivery Time:
2 weeks
Brand:
Rexroth
Product Description
R983032412 2FRM6B36-2X/6QRV-IN001 Speed Control Valve
Pressure-compensated flow control valve manufactured by Rexroth in Germany. This 2-way throttle check valve maintains constant flow despite pressure fluctuations, featuring adjustable orifice with pressure-compensated spool for precise flow control.
Technical Specifications
| Full Part Number | R983032412 (IN001 = individual inspection suffix) |
|---|---|
| Base Model | 2FRM 6 - B36 - 2X / 6QRV |
| Valve Type | 2-way throttle check valve with pressure compensator - flow control maintaining constant flow despite pressure fluctuations |
| Nominal Size (NG) | 6 - sandwich mounting per ISO 6263 / NG6 (DIN 24340 Form C) |
| Function | Adjustable orifice + pressure-compensated spool → constant flow A→B; free reverse flow B→A via check valve |
| Adjustment Type | B36 = Rotary knurled knob with scale & lock setscrew (hand-adjustable) |
| Component Series | 2X (series 20+, dimensionally interchangeable) |
| Max. Adjustable Flow | 6 L/min (fine-to-medium metering - Q range typically 0.1-6 L/min) |
| Max. Operating Pressure | 315 bar (ports A & B) |
| Cracking Pressure (Reverse Check) | approx. 0.5 bar (standard free-return) |
| Mounting Pattern | NG6 sandwich (4× M5 bolts), between directional valve & subplate |
| Seal Material | NBR (standard, code V - for mineral oil HL/HLP, HFC) |
| Hydraulic Fluid | Mineral oil HL, HLP per DIN 51524; HFC (water-glycol); HLPD, HVLP, HVLPD |
| Fluid Temperature Range | -30 °C to +80 °C (NBR seals) |
| Viscosity Range | 10-800 mm²/s |
| Weight (approx.) | 1.23 kg |
| Body Material | Steel / cast iron, zinc-plated |
Frequently Asked Questions
Q1: Is this a simple throttle / needle valve?
No. A simple needle valve lets flow vary with pressure difference. The 2FRM is pressure-compensated - the built-in compensator spool keeps the set flow essentially constant despite load or supply pressure changes (provided ≥~15 bar ΔP across compensator).
Q2: What does "B36 /6QRV" mean?
- B36 = NG6 sandwich, rotary knurled knob with scale (0-max reference) + locking setscrew - adjustable by hand
- /6 = maximum adjustable flow = 6 L/min (medium-fine version; also available: /1.5, /3, /10, /16, /25, /32)
- Q = flow controlled in A→B direction
- R = free reverse flow B→A via check valve
- V = NBR seals (standard)
Q3: How do I set the flow?
Loosen the lock setscrew, turn the knurled knob clockwise to increase flow, counterclockwise to decrease. The knob has a relative scale - use a flow meter to correlate to actual L/min. Retighten the lock setscrew after setting.
Q4: How is it mounted?
As a sandwich (stackable) valve between a directional control valve and the NG6 subplate, same bolt pattern as ZDR/Z2FS sandwiches (4× M5). Observe the arrow on the valve body - A→B = controlled/metered flow, B→A = free return.
Q5: Does it work both ways?
No - one direction is pressure-compensated metered flow (A→B), the opposite direction (B→A) is free return through the check valve (no flow control, minimal pressure drop ~0.5 bar). For bidirectional flow control use two 2FRM valves.
Q6: Minimum pressure requirement?
The pressure compensator typically needs min. ~15 bar differential pressure across the compensator to regulate properly. Supply pressure must exceed the highest load pressure + ~15-20 bar + line losses.
Q7: Common faults & causes?
- Flow varies with load pressure: compensator spool stuck (contamination) - check oil filtration (ISO 4406 18/16/13 or better); or insufficient ΔP across compensator
- No flow / very low at max knob: valve installed backwards, or compensator/spool jammed
- Cannot reach set flow / unstable: partially clogged orifice, cold-start high viscosity - flush system
- Excessive heat: normal for flow controls - P_drop × Q = heat; ensure supply pressure isn't unnecessarily high above load requirement
Q8: Fluid & seal compatibility?
NBR seals = mineral oil (HL/HLP) & HFC (water-glycol). For HEES/HETG biodegradable oils or HFD phosphate ester → specify FKM (Viton) seal variant.
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Company
Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
Location
Nan'an, Fujian Province, China
Contact Person
liyun