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Tokio Keiki TGMDC-3-X-A2K-50 Modular Valve

The TGMDC-3-X-A2K-50 is a high-performance modular check valve manufactured by Tokio Keiki. Designed for the ISO 4401-03 (Size 03) mounting interface, this valve provides a direct-acting check function specifically for the A-port. The TGMDC series is a «sandwich» style valve, allowing it to be stacked vertically with other modular components and directional valves. This configuration is used to ensure one-way flow in the A-line, preventing reverse flow and protecting upstream components from pressure back-surges.

Technical Specifications and Performance

The TGMDC-3-X-A2K-50 is engineered for industrial-grade durability and high-pressure sealing. Key technical data includes:

• Nominal Size: ISO 4401-03 (G03 / Cetop 3).

• Control Port: A-port (Single type).

• Check Direction: Meter-in direction (X designation).

• Cracking Pressure: «2K» designation (Standard spring force, typically 0.2 MPa / 2 bar).

• Maximum Operating Pressure: 25 MPa (250 bar).

• Maximum Flow Rate: 50 L/min.

• Design Number: 50 Series.

Key Features for Industrial Applications

Reliable One-Way Flow Control

The primary function of the TGMDC-3-X-A2K-50 is to allow free flow into the A-port while providing a bubble-tight seal in the opposite direction. This is essential in circuits where maintaining pressure on one side of an actuator is required, or where preventing fluid backflow is critical for the safety and sequence of the machine’s operation.

Optimized «2K» Cracking Pressure

The «2K» spring specification provides a balanced cracking pressure that ensures the valve stays closed under minimal backpressure while opening smoothly as soon as the intended flow begins. This reduces energy loss and heat generation during the opening phase, contributing to the overall efficiency of the hydraulic power unit.

High-Density Modular Stacking

Like all 50-series modular valves from Tokio Keiki, the TGMDC-3-X-A2K-50 eliminates the need for external piping. Its compact footprint allows for complex hydraulic logic to be built into a single vertical stack, significantly reducing the size of the manifold and minimizing the number of threaded connections that could become potential leak points over time.