Purchase now: Tokyo Keiki TGMFN-3-X-B2W-50 Flow Control
Purchase now: Atlantech Drives provides you the Tokyo Keiki TGMFN-3-X-B2W-50, a **Modular Throttle Valve with Check Valve** (Flow Control) for CETOP 3 / NG6 stacks. This valve is the standard solution for regulating the speed of hydraulic actuators. By restricting the flow rate in one direction while allowing free flow in the reverse direction (via the built-in check valve), it allows for independent speed adjustment of the cylinder’s extension or retraction stroke.
Technical Specifications and Metering Logic
The **TGMFN-3** series is robust and precise. The code **»X»** combined with **»B»** defines the control orientation. Typically, in Tokyo Keiki nomenclature, this configuration refers to **Meter-Out** or **Meter-In** control on the **B-Line**. «Meter-Out» (restricting flow leaving the cylinder) is the most common method as it provides a stiffer, more stable control and prevents stick-slip, whereas «Meter-In» is used for resistive loads. The **»2W»** indicates the adjustment range or knob type.
- Part Number: TGMFN-3-X-B2W-50.
- Function: Flow Control (Throttle + Check).
- Control Type: Meter-Out (Check specific X/Y logic).
- Line: B Port.
- Max Pressure: 31.5 MPa.
- Max Flow: 60 L/min.
- Adjustment: Micrometer knob / Screw.
- Stacking Height: 40mm (approx).
Expert Installation Advice: Meter-In vs Meter-Out
Choosing the wrong control logic leads to poor performance. Expert Tip: For vertical loads or over-center loads, always use **Meter-Out** (restricting the return oil). If you use Meter-In, the load may fall faster than the oil enters, causing cavitation. The TGMFN-3-X-B2W is versatile, but verify the arrow direction on the nameplate. The arrow indicates the controlled flow path; the check valve symbol indicates the free flow path.
Frequently Asked Questions (FAQs)
Q: Does temperature affect the speed?
A: Yes, this is a standard throttle valve (non-pressure compensated). As oil heats up and viscosity drops, the flow rate through the orifice will increase slightly, speeding up the actuator. For constant speed regardless of temp, use a TGMFG (temperature compensated) valve.
Q: How do I lock the setting?
A: The adjustment knob typically has a set screw or a locking nut at the base to prevent machine vibration from changing the flow setting.
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