R900936636 2FRE6B-2X/16QK4MV German Rexroth flow control valve
|
Parameter Category |
Specification |
|---|---|
|
Manufacturer & Model Series |
Rexroth 2FRE 6 Series |
|
Order Code |
R900936636 |
|
Full Model Designation |
2FRE 6 B-2X/16QK4MV |
|
Valve Type |
2-Way Proportional Flow Control Valve with Pressure Compensation |
|
Primary Function |
Electronically controlled, pressure- and temperature-compensated flow regulation. Provides precise speed control of actuators independent of load changes. |
|
Control Type |
Direct-acting proportional solenoid with inductive position transducer (electrical closed-loop control). |
|
Nominal Size |
NG 6 |
|
Max. Operating Pressure |
315 bar (Ports A, B) |
|
Rated Flow (Qn) |
16 L/min (Progressive characteristic) |
|
Max. Flow Capacity |
Approx. 25 L/min |
|
Pressure Compensation |
Yes, built-in pressure compensator (Type B, without external closing function). |
|
Check Valve |
No (Model suffix "M" indicates no integrated check valve). |
|
Port Designations |
A, B (2-way flow control, direction A→B) |
|
Mounting Style |
Subplate Mounting |
|
Mounting Interface |
ISO 4401-03-02-0-05 (NG6) |
|
Seal Material |
FKM (Fluorocarbon Rubber) |
|
Electrical Connection |
K4 (Individual 3-pin connector: 2 pins + PE) |
|
Control Signal |
Requires external proportional amplifier (e.g., VT-VRPD-1 series) for command input and position feedback. |
|
Fluid Compatibility |
Mineral-based hydraulic oils (HL, HLP), biodegradable oils (HETG, HEES), and phosphate esters (HFDR). |
|
Operating Temperature Range |
-20°C to +80°C |
|
Country of Origin |
Germany |
| R900949741 2FRE6B-2X/16QK4RV |
| R900937868 2FRE6B-2X/1LK4MV |
| R900947600 2FRE6B-2X/1LK4RV |
| R900937870 2FRE6B-2X/25QK4MV |
| R900937871 2FRE6B-2X/25QK4RV |
| R900936635 2FRE6B-2X/2LK4MV |
| R900934891 2FRE6B-2X/2LK4RV |
| R900938035 2FRE6B-2X/2QEK4MV |
| R900954501 2FRE6B-2X/2QEK4RV |
| R900933708 2FRE6B-2X/3QK4MV |
| R900937872 2FRE6B-2X/3QK4RV |
| R900937873 2FRE6B-2X/6QK4MV |
| R900949742 2FRE6B-2X/6QK4RV |
| R900937874 2FRE6B-2X/8LK4MV |
| R900934070 2FRE6B-2X/8LK4RV |
| 811403013 2FREX10B-1X/70L1G24-25N9Z4MM |
| 811403123 2FREX6B-1X/15L1G24-25N9Z4MM |
| 811403119 2FREX6B-1X/35L1G24-25N9Z4MM-254 |
| 811403118 2FREX6B-1X/7,5L1G24-25N9Z4MM-254 |
| R900424887 2FRM10-3X/10L |
| R900423250 2FRM10-3X/10LB |
| R900427774 2FRM10-3X/10LV |
| R900423251 2FRM10-3X/16L |
| R900423252 2FRM10-3X/16LB |
| R900423253 2FRM10-3X/16LV |
FAQ:
Q1: What is the main purpose of this 2FRE valve?
A: This is a high-performance, electrically controlled flow control valve. Its primary function is to provide precise speed control for hydraulic actuators (cylinders or motors). The key feature is that its flow setting remains constant even if the system pressure changes, ensuring consistent actuator speed regardless of the load.
Q2: How is this 2FRE valve different from a standard throttle or Z2FS valve?
A: The critical difference is pressure compensation. A standard throttle valve's flow changes with pressure fluctuations. The 2FRE valve has an internal pressure compensator that automatically adjusts to maintain a constant flow rate for a given electrical signal, providing much more accurate and repeatable speed control. It also allows for electronic, on-the-fly adjustment via a control signal.
Q3: What do the codes "B" and "16Q" in the model number mean?
A:
-
B: Specifies the type of pressure compensator. Version "B" is a standard compensator without an external pilot control function for closing.
-
16Q: 16 is the rated flow in liters per minute (16 L/min). Q indicates a progressive flow characteristic, meaning the flow increases progressively with the control signal, allowing for finer resolution at lower flow rates.
Q4: The designation includes "MV". What does the "M" signify?
A: The suffix "M" indicates that the valve does NOT have an integrated check valve. Therefore, it regulates flow in only one direction (from port A to B, as per the flow direction arrow on the valve). Flow in the reverse direction is blocked. A version with a "V" instead of "M" would include a free-flow check valve for the reverse direction.
Q5: What components are needed to operate this valve?
A: Unlike valves with onboard electronics (OBE), this valve requires an external proportional amplifier. You need:
-
A compatible amplifier card (e.g., Rexroth VT-VRPD-1-1X).
-
A command signal (e.g., 0-10V, 4-20mA) from a PLC or controller.
-
A 24V DC power supply for the amplifier.
The valve's integrated inductive position transducer provides closed-loop feedback to the amplifier for precise spool positioning.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.