1. Inleiding
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your FUZHUI G3/4 3-Way Thermostatic Mixing Valve. This device is designed to ensure a stable water temperature for domestic hot water systems and floor heating, featuring an anti-scalding safety mechanism.
The valve is constructed from brass electroplated with nickel and ABS components, ensuring durability and reliable performance. It is suitable for various washing areas including bathrooms, toilets, and kitchens.

Image 1.1: The FUZHUI G3/4 Thermostatic Mixing Valve in a typical application setting, demonstrating its use with a faucet.
2. Opstelling en installering
Proper installation is crucial for the optimal performance and safety of the thermostatic mixing valve. It is recommended that installation be performed by a qualified plumber in accordance with local plumbing codes and regulations.
2.1 Voor-installasie tjeks
- Maak seker dat alle nodige gereedskap en toebehore beskikbaar is.
- Verify that the water supply lines (hot and cold) are accessible and can be shut off.
- Inspect the valve for any visible damage before installation.
2.2 Installasiestappe
- Sluit watertoevoer af: Turn off the main water supply to the area where the valve will be installed.
- Dreineringslyne: Open nearby faucets to drain any remaining water from the pipes.
- Connect Cold Water Inlet: Identify the cold water inlet port on the valve (typically marked with blue or 'C') and connect the cold water supply line.
- Connect Hot Water Inlet: Identify the hot water inlet port on the valve (typically marked with red or 'H') and connect the hot water supply line.
- Connect Mixed Water Outlet: Connect the mixed water outlet port to the fixture or distribution system.
- Veilige verbindings: Ensure all connections are tight and leak-free. Use appropriate sealing materials (e.g., PTFE tape) on threaded connections.
- Herstel watervoorraad: Skakel die hoofwatertoevoer stadig aan en kyk vir lekkasies.

Beeld 2.1: Gedetailleerd view of the valve's ports and temperature control knob, indicating flow direction and temperature range.
3. Bedryfsinstruksies
The FUZHUI G3/4 Thermostatic Mixing Valve is designed for precise temperature control, ensuring a consistent water temperature output between 35°C and 60°C.
3.1 Temperatuuraanpassing
- The valve features a rotary knob on top for temperature adjustment.
- Rotate the knob to select the desired mixed water temperature within the operational range of 35°C to 60°C.
- The valve will automatically mix hot and cold water to maintain the set temperature, even with fluctuations in incoming water pressure or temperature.
3.2 Anti-Scalding Safety Feature
This valve includes a built-in safety device. In the event of a cold water supply failure, the valve will automatically shut off the hot water supply to prevent scalding, enhancing user safety.

Image 3.1: The temperature adjustment dial on the thermostatic mixing valve, showing settings from 'Min' to 'Max 6'.
4. Onderhoud
Regular maintenance helps ensure the longevity and optimal performance of your thermostatic mixing valve.
- Skoonmaak: Periodically clean the exterior of the valve with a soft, damp lap. Vermy skuurmiddels of oplosmiddels wat die afwerking kan beskadig.
- Inspeksie: Annually inspect the valve and connections for any signs of leaks, corrosion, or wear.
- Filter skoonmaak (indien van toepassing): If your system includes inline filters, check and clean them as per their respective instructions to prevent debris from affecting valve operation.
- Professionele tjek: Consider having a qualified plumber inspect the valve every few years to ensure proper calibration and function, especially in hard water areas where mineral buildup might occur.
5. Probleemoplossing
If you encounter issues with your thermostatic mixing valve, refer to the following troubleshooting guide:
| Probleem | Moontlike oorsaak | Oplossing |
|---|---|---|
| Onkonsekwente watertemperatuur | Fluctuating water pressure; debris in valve; incorrect calibration. | Check water pressure regulators; clean any inline filters; consult a plumber for recalibration. |
| No hot water / Only cold water | Hot water supply failure; valve stuck. | Check hot water heater and supply; if cold water supply failed, the anti-scalding feature may have activated. |
| No cold water / Only hot water | Cold water supply failure; valve stuck. | Check cold water supply; if cold water supply failed, the anti-scalding feature should have activated to shut off hot water. If hot water is still flowing, the valve may be faulty. |
| Verminderde watervloei | Debris in valve or pipes; partially closed shut-off valves. | Check and clean inline filters; ensure all shut-off valves are fully open. |
| Lekke rondom verbindings | Los verbindings; beskadigde seëls. | Tighten connections; replace seals or O-rings if damaged. |
6. Spesifikasies
Detailed technical specifications for the FUZHUI G3/4 Thermostatic Mixing Valve:
| Kenmerk | Detail |
|---|---|
| Item Tipe | Termostatiese mengklep |
| Materiaal | Brass Electroplated, ABS |
| Kleur | Silwer, Swart |
| Draad tipe | Outer Wire (G3/4) |
| Temperatuurreeks | 35°C tot 60°C |
| Veiligheidsfunksie | Automatic hot water shut-off upon cold water failure (Anti-Scalding) |
| Vervaardiger | FUZHUI |
| Item gewig | 1.03 pond |
| Pakket afmetings | 4.72 x 3.15 x 1.97 duim |
| Modelnommer | FUZHUI3qxecud79k-11 |

Image 6.1: Close-up of the G3/4 threaded connection at the bottom of the valve.
7. Waarborginligting
Specific warranty details for the FUZHUI G3/4 Thermostatic Mixing Valve are not provided in the product information. Please refer to the retailer or manufacturer's official website for current warranty terms and conditions.
8. Kliëntediens
For technical assistance, installation queries, or troubleshooting beyond this manual, please contact FUZHUI customer support through their official channels. Contact information can typically be found on the product packaging or the manufacturer's webwebwerf.