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R983073459 2FRM6B76-2X/32QRV-IN001 German made Rexroth original speed control

China R983073459 2FRM6B76-2X/32QRV-IN001 German made Rexroth original speed control

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R983073459 2FRM6B76-2X/32QRV-IN001 German made Rexroth original speed control

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Packaging Details	wooden box
Mounting Pattern	NG6 sandwich (4× M5 bolts), between directional valve & subplate
Payment Terms	Western Union,T/T,D/P,D/A,L/C
Fluid Temperature Range	-30 °C to +80 °C (NBR seals)
Supply Ability	100
Delivery Time	2 weeks
Hydraulic Fluid	Mineral oil HL, HLP per DIN 51524; HFC (water-glycol); HLPD, HVLP, HVLPD
Certifiion	ISO
Viscosity Range	10–800 mm²/s
Weight (approx.)	1.28 kg
Model Number	R983073459 2FRM6B76-2X/32QRV-IN001
Brand Name	Rexroth
Place of Origin	German

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Product Details
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Product Specification


Packaging Details	wooden box	Mounting Pattern	NG6 sandwich (4× M5 bolts), between directional valve & subplate
Payment Terms	Western Union,T/T,D/P,D/A,L/C	Fluid Temperature Range	-30 °C to +80 °C (NBR seals)
Supply Ability	100	Delivery Time	2 weeks
Hydraulic Fluid	Mineral oil HL, HLP per DIN 51524; HFC (water-glycol); HLPD, HVLP, HVLPD	Certifiion	ISO
Viscosity Range	10–800 mm²/s	Weight (approx.)	1.28 kg
Model Number	R983073459 2FRM6B76-2X/32QRV-IN001	Brand Name	Rexroth
Place of Origin	German
High Light	Rexroth speed control valve German made ，Rexroth hydraulic valve with warranty ，original Rexroth speed control valve

R983073459 2FRM6B76-2X/32QRV-IN001 German made Rexroth original speed control valve

Product Specifiions

Full Part Number	R983073459 (IN001 = individual inspection suffix)
Base Model	2FRM 6 - B76 - 2X / 32QRV
Valve Type	2-way throttle check valve with pressure compensator (flow control — 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	B76 = Rotary knurled knob with scale & tamper-proof lockable cap / sealable (hand-adjustable, variant of B36 with enhanced locking — same flow range)
Component Series	2X (series 20+, dimensionally interchangeable)
Max. Adjustable Flow	32 L/min (Q range typically 0.5-32 L/min — largest flow capacity for NG6 2FRM)
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.)	1.28 kg
Body Material	Steel / cast iron, zinc-plated

Frequently Asked Questions (FAQ)

Q1: Is this a simple throttle / needle valve?

No. A simple needle valve lets flow vary with ΔP. 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 "B76 /32QRV" mean?

B76 = NG6 sandwich, rotary knurled knob with scale + tamper-lockable / sealable cap (hand-adjustable; same flow characteristic as B36)
/32 = maximum adjustable flow = 32 L/min (maximum NG6 2FRM capacity; also available: /1.5, /3, /6, /10, /16, /25)
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/turn the lock ring (if sealed), 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. After setting, tighten the lock ring / apply seal wire to prevent accidental adjustment.

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 max 32 L/min / 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: What is the difference between B36 and B76?

Both have the same flow characteristic and knob. B76 has a tamper-evident / sealable lock cap for appliions where the setting must not be altered after commissioning. B36 has a standard lock setscrew only.

Q9: 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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Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha... Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha...

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Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
Nan'an, Fujian Province, China
https://www.electrichydpump.com/

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