MTCV-03-W Modular Throttle Check Valve 250bar

Product Overview

Models such as MTCV-03-W, MTCV-03-WO, MTCV-02-WI-75, MTCV-04-WI and MTCV-06-WI belong to the modular (sandwich) throttle and check valve series. Featuring adjustable throttling with an integral check valve, they comply with ISO 4401 mounting standards. Every unit undergoes rigorous 100% simulated operating-condition testing and offers excellent drop-in interchangeability for stacking directly between directional valves and subplates. Precise flow restriction in one direction and free reverse flow enable reliable actuator speed control in medium-to-high-pressure hydraulic systems.

Technical Specifications 

• Model examples: MTCV-03-W, MTCV-03-WO, MTCV-02-WI-75, MTCV-04-WI, MTCV-06-WI
• Valve type: Modular throttle and check valve (sandwich type)
• Nominal size: 02 = NG6; 03 = NG10; 04 / 06 = larger sizes
• Mounting interface: ISO 4401
• Control ports: W = A&B ports; A / B = single port
• Throttling type: WI = Meter-in; WO = Meter-out
• Maximum operating pressure: 21–25 MPa (210–250 bar)
• Maximum flow: approx. 35–70 L/min (size 02); approx. 70–90 L/min (size 03); higher for larger sizes
• Adjustment: Screw or handknob
• Weight: approx. 1.2–1.4 kg (size 02); approx. 2.8–2.9 kg (size 03)
• Recommended fluid cleanliness: 25 μm or better

Key Technical Advantages

1. Modular sandwich design: Stacks directly between directional valve and subplate/manifold, saving space and eliminating additional piping leakage points for compact, efficient system layouts.
2. Integrated throttle and check function: Precise flow restriction in one direction with free reverse flow via integral check valve, ideal for actuator speed control and anti-cavitation.
3. Excellent drop-in interchangeability: Strict compliance with ISO 4401 mounting face allows direct replacement of equivalent modular throttle check valves, minimizing modification costs and downtime.
4. High pressure and reliable adjustment: Rated up to 25 MPa with precise adjustment mechanism for stable, repeatable settings.
5. Precision machining and long service life: High-strength body and hardened throttle components deliver low internal leakage, strong contamination resistance and long-term reliability.

Application Areas

Injection moulding machines, die-casting machines, metal-forming equipment, machine-tool hydraulics, packaging machinery, automated production lines, mobile equipment and other medium-to-high-pressure hydraulic circuits requiring precise actuator speed control.

Expert Maintenance Tips

1. Ensure mounting surfaces are clean and flat before installation; fit seals correctly and tighten specified bolts evenly to the recommended torque to prevent external leakage.
2. Maintain recommended fluid cleanliness; use hydraulic fluids compatible with the installed seal material. Verify adjustment position before first start-up.
3. To adjust flow, loosen the locking device and turn the adjusting screw slowly (clockwise usually decreases flow); re-lock after setting.
4. Periodically inspect the valve body and adjustment mechanism for leakage or sticking; clean and protect sealing surfaces during long-term storage.
5. Do not disassemble internal throttle and check valve components. Seal replacement or repairs should be performed only by experienced technicians; always perform functional tests before returning the valve to service.