Purchase now: Tokyo Keiki TGMPC-3-BAK-51 Pilot Check Valve
Purchase now: Atlantech Drives provides you the Tokyo Keiki TGMPC-3-BAK-51 (Tokimec), a high-performance **Modular Pilot Operated Check Valve** designed for the **DG4V-3** stack system (CETOP 3 / NG6). This component is critical for safety in hydraulic circuits. It functions as a leak-free load holding valve, ensuring that hydraulic cylinders remain locked in position even if the pump is turned off or a hose bursts. The «Modular» design allows it to be sandwiched vertically between the directional valve and the subplate, saving plumbing space.
Technical Specifications and Load Holding
The **TGMPC-3** series is rated for pressures up to **31.5 MPa** (315 Bar). The configuration code **»BAK»** indicates that the check function operates on **Both A and B Lines**. Flow is allowed freely from the valve to the actuator, but return flow is blocked until pilot pressure is applied from the opposite line (e.g., pressure in A opens the check in B). The «51» is the design sequence, ensuring compatibility with current NG6 stacks.
- Part Number: TGMPC-3-BAK-51.
- Series: TGM (Modular Stack Valve).
- Function: Pilot Operated Check (Double).
- Lines Acting: A and B lines.
- Size: NG6 / CETOP 3 / NFPA D03.
- Max Pressure: 31.5 MPa.
- Max Flow: 60 L/min.
- Cracking Pressure: Standard (Check datasheet for ‘K’ value).
- Mounting: Sandwich / Stackable.
Expert Installation Advice: O-Ring Orientation
Modular valves are easy to install but prone to errors. Expert Tip: When installing the TGMPC-3, pay close attention to the orientation pin and the O-ring counterbores. The O-rings are typically on the **bottom** face (facing the subplate/manifold). If you flip the valve upside down, you will have metal-on-metal contact with the directional valve, causing massive leakage. Also, ensure the mounting bolts (tie rods) are torqued to specifications (usually 5-7 Nm for M5) to prevent spool binding in the directional valve above it.
Frequently Asked Questions (FAQs)
Q: Why is my cylinder «chattering» when lowering?
A: This can happen if the pilot ratio is too low or the load is over-running faster than the pump can supply pilot pressure. You might need a meter-out flow control or a counterbalance valve instead.
Q: Does «BAK» mean it locks both directions?
A: Yes, it locks the actuator in both extend and retract directions, making it ideal for clamping applications.
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