M14 x 1.5 DIN L Bidirectional Hydraulic Flow Control Valve – Chinese Mini Excavator – Plug & Play

Improve the control and smoothness of your Chinese mini excavator with this complete, ready-to-install bidirectional hydraulic flow control valve assembly from M-n-L Custom Solutions – Lima, Ohio.

This setup was developed as a simple way to help slow down an overly fast or sensitive boom or stick cylinder without cutting hoses, replacing the main control valve, or making major hydraulic modifications.

COMPLETE PLUG & PLAY ASSEMBLY

The valve is supplied with the fittings needed for common Chinese mini excavator hydraulic connections:

- M14 x 1.5 DIN L Male Connection

- M14 x 1.5 DIN L Female Connection

- Bidirectional Adjustable Flow Control Valve

- Complete assembled unit – ready to install

Simply disconnect the existing M14 DIN L hydraulic hose at the cylinder, install the flow control assembly, reconnect the hose, and adjust the valve.

No hose cutting or special adapters are normally required when your machine uses M14 x 1.5 DIN L connections.

DESIGNED FOR BOOM & STICK CYLINDER CONTROL

Many Chinese mini excavators have hydraulic functions that can feel extremely quick or sensitive, particularly when trying to perform precise work.

Adding an adjustable flow control valve allows the operator to reduce hydraulic flow to the cylinder and fine-tune the operating speed.

This can help provide:

✔ Smoother boom operation

✔ Smoother stick/arm operation

✔ Better low-speed control

✔ Easier fine positioning

✔ Less abrupt cylinder movement

✔ Improved operator control for precision work

This is especially useful for operators who find the factory boom or stick movement faster than they prefer.

BIDIRECTIONAL FLOW CONTROL

This is a bidirectional flow control valve, allowing it to restrict hydraulic flow in both directions.

The assembly can be installed at either cylinder port depending on the available space and hose routing on your particular machine.

SIMPLE ADJUSTMENT

We recommend starting with the valve 100% OPEN.

After installation:

1. Start with the adjustment knob fully open.

2. Operate the cylinder and verify normal movement.

3. Close the valve approximately 1/4 turn.

4. Test the cylinder again.

5. Continue making small adjustments until the cylinder operates at a comfortable speed.

6. As you get close to the desired speed, use smaller adjustments—approximately 1/8 turn at a time.

The goal is not to close the valve excessively. Only use enough restriction to obtain the desired speed and smooth operation.

USING TWO FLOW CONTROL VALVES

For customers wanting better control of both the boom cylinder and stick cylinder, two assemblies can be used.

Install one assembly on each cylinder and adjust each cylinder individually.

Because every machine, hydraulic system, operator, and attachment combination is different, the valves allow you to tune the machine to your preferred operating feel rather than relying on one fixed restriction.

HEAT TESTING

A common concern when adding hydraulic flow restriction is additional hydraulic oil temperature.

During our testing, operating two flow control valves produced approximately a 1–2°F increase in hydraulic fluid temperature under the conditions tested.

Actual temperature changes can vary depending on machine design, hydraulic pressure, operating conditions, ambient temperature, valve adjustment, and how heavily the machine is being worked.

We recommend avoiding unnecessary restriction and periodically monitoring hydraulic oil temperature, especially during initial setup.

IMPORTANT – CHECK YOUR CONNECTIONS BEFORE ORDERING

This assembly is designed for machines using:

M14 x 1.5 DIN L hydraulic connections

Chinese mini excavators can use different fitting sizes depending on manufacturer, model, cylinder, and production date.

Please verify your fitting size before ordering.

If you are unsure whether your machine uses M14 DIN L fittings, contact us through eBay Messenger and we will be happy to help you determine compatibility.

WHAT YOU RECEIVE

Quantity: 1 Complete Flow Control Assembly

Includes the bidirectional adjustable flow control valve and installed M14 DIN L male/female connection hardware shown in the listing.

For controlling both the boom and stick cylinders, purchase quantity 2.

INSTALLATION & SAFETY

Hydraulic systems can retain pressure even after the engine has been shut off.

Before installation:

- Park the machine securely.

- Lower the attachment completely to the ground.

- Shut off the engine.

- Relieve residual hydraulic pressure according to your machine manufacturer's procedure.

- Clean the area around the hydraulic connection before opening the system.

- Keep dirt and contamination out of all hoses and fittings.

- Check for leaks after installation.

Never use your hand to check for hydraulic leaks. High-pressure hydraulic fluid can penetrate the skin and cause serious injury.

This product should be installed by someone familiar with hydraulic equipment and safe hydraulic service procedures.

M-n-L CUSTOM SOLUTIONS

M-n-L Custom Solutions – Lima, Ohio

We specialize in hydraulic components, custom hydraulic solutions, adapters, hoses, test equipment, and upgrades for Chinese mini excavators and mini skid steers.

📦 Ships from the USA

🚚 Same-day shipping on qualifying orders placed before our shipping cutoff

🇺🇸 Assembled in the USA with a mix of imported and USA-made components

Questions about fitment or installation?

Please contact M-n-L Custom Solutions through eBay Messenger before ordering. We are happy to help verify your hydraulic connection size.

And we are more than Happy to discuss a discount if multiple items are purchased at the store..

Brand	Vzen
Unit Type	Unit
Unit Quantity	1 each
Country of Origin	China

Hydraulic Flow Control Valve - STB-G3/8 - Mini Excavator - AGT - USA-3/8" L08

Specifications

Returns Accepted