HFT40001Z-01 Thermostatic Mixing Valve
The Legom HFT40001Z-01 Thermostatic Mixing Valve is a G1 thermostatic mixing valve with an electroplated integrated water inlet connector and electroplated handwheel on a 57-3 copper body, delivering standard HFT thermostatic mixing performance — temperature adjustment range 20–60°C, control accuracy ±2°C, working pressure range 0.03–1 MPa — at the G1 (DN25) connection size with premium electroplated finish at the inlet connector and handwheel.
Unlike the HFT40002Z-01 and HFT40003Z-01 which are one-way temperature gate valves, the HFT40001Z-01 is a standard three-port thermostatic mixing valve that continuously blends hot and cold water to deliver a set mixed outlet temperature. The electroplated integrated inlet connector reduces the external fitting count at the supply connections while providing a premium metallic appearance at the connection point. Compatible with hot water inlet 30–99°C and cold water inlet 5–29°C. Factory-preset temperature ranges available for OEM orders.
Key Benefits
- Electroplated integrated inlet connector – Premium metallic electroplating on the integrated inlet connector provides reduced external fitting count alongside a high-specification metallic finish at the hot and cold supply connection points
- Electroplated handwheel – Metallic surface finish on the ABS handwheel for premium OEM product appearance and visible installation coordination
- G1 connection (DN25) for larger domestic and light commercial flow – Higher flow capacity than the standard G3/4 domestic models, suited to larger storage water heaters and light commercial applications requiring more throughput at the mixing point
- Standard thermostatic mixing function – Continuously blends hot and cold water to deliver a set mixed outlet temperature — the correct choice when temperature blending rather than flow gating is required at the G1 size with electroplated connector specification
- ±2°C temperature control accuracy – Consistent mixed water delivery within ±2°C of the set point across varying supply conditions
- 20–60°C adjustment range – Full-range commissioning flexibility with factory-preset narrower ranges available
- No electricity required – Self-acting thermostatic operation with no electrical connection needed
- 57-3 copper body – Durable copper alloy construction for potable hot water service
- Wide pressure range 0.03–1 MPa – Covers gravity-fed through standard mains-pressure systems
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | HFT40001Z-01 |
| Body Material | 57-3 copper |
| Handwheel | ABS with electroplating |
| Inlet Connector | Electroplated integrated water inlet connector |
| Connection | G1 internal thread (DN25) |
| Temperature Adjustment Range | 20–60°C (standard); 35–55°C / 40–50°C / 30–60°C (preset options) |
| Temperature Control Accuracy | ± 2°C |
| Working Pressure Range | 0.03 MPa – 1 MPa |
| Ideal Working Pressure | 0.1 MPa – 0.5 MPa |
| Cold Water Temperature Range | 5°C – 29°C |
| Hot Water Temperature Range | 30°C – 99°C |
| Primary Use | Water heater (larger domestic, light commercial, OEM) |
G1 Electroplated Connector Series — Function Comparison
| Model | Function | Flow Behavior | Use Case |
|---|---|---|---|
| HFT40001Z-01 | Thermostatic mixing | Always open — blends hot and cold | Anti-scald mixing at G1 |
| HFT40002Z-01 | One-way low temp opening | Gates — opens below threshold | Recirculation, low temp detection |
| HFT40003Z-01 | One-way high temp opening | Gates — opens above threshold | Bypass, dump, overheat protection |
Application & Use Cases
- Larger domestic water heaters requiring G1 flow capacity – Homes with high-volume electric or solar storage water heaters where G3/4 domestic models are undersized and the G1 bore provides adequate throughput for the household’s simultaneous hot water demand
- OEM water heater product integration at G1 with electroplated connector – Manufacturers specifying electroplated inlet connectors for consistent premium appearance at the supply connection points in their G1-connection product lines
- Light commercial water heating systems – Small commercial buildings, guesthouses, and facilities where G1 connection capacity matches the system demand and the electroplated connector and handwheel specification is required
- Solar thermal and heat pump water heaters at G1 – Larger storage systems where G1 flow capacity is needed and the electroplated connector provides premium appearance at the integration point
Installation Notes
- Connect hot water supply to the hot inlet via the electroplated integrated inlet connector (H), cold water to cold inlet (C), and distribution to the mixed outlet (M) using appropriate G1 thread sealant
- Install isolation valves upstream of both hot and cold inlets
- Install a strainer on the cold inlet to protect the thermostatic cartridge
- Handle the electroplated connector and handwheel carefully — avoid contact with thread sealant on electroplated surfaces
- The valve performs optimally at 0.1–0.5 MPa
- Verify outlet temperature at the furthest fixture with a calibrated thermometer after installation
- Flush supply lines before installation to remove debris
Frequently Asked Questions
What is the difference between the HFT40001Z-01 and the HFT40002Z-01?
Both are G1 valves with identical electroplated integrated inlet connectors and electroplated handwheels on 57-3 copper bodies. The difference is the valve function. The HFT40001Z-01 is a standard thermostatic mixing valve — it has three ports (hot inlet, cold inlet, mixed outlet) and continuously blends hot and cold water to deliver a set temperature. The HFT40002Z-01 is a one-way low temperature opening valve — it has one inlet and one outlet and either allows or blocks flow based on whether the sensed temperature is below or above the threshold. Choose the HFT40001Z-01 for anti-scald temperature blending. Choose the HFT40002Z-01 for temperature-based flow gating in recirculation or thermostatic management circuits.
When should I choose the G1 HFT40001Z-01 over the G3/4 models?
Choose the HFT40001Z-01 when the water heater outlet connection is G1 (DN25) or when the system’s peak simultaneous hot water demand cannot be met at G3/4 flow rates without excessive pressure drop. G1 provides approximately 56% more cross-sectional bore area than G3/4, enabling significantly higher flow at the same differential pressure. For most standard domestic water heaters, G3/4 is sufficient. G1 is appropriate for large-volume domestic storage systems and light commercial installations.
Can the temperature range be factory-preset?
Yes. OEM and project orders can specify factory-preset temperature ranges of 35–55°C, 40–50°C, or 30–60°C. Electroplating finish options are available for OEM specification. Contact the Legom team with your requirements.
OEM & ODM Customization
Legom supports full OEM and ODM services for the HFT40001Z-01 Thermostatic Mixing Valve. Customization options include electroplating specification, preset temperature range, connection size, integrated connector configuration, and body finish. Contact us via WhatsApp or info@legomsmart.com.
Product information last reviewed by the Legom Technical Team. For the most current specifications, refer to the official datasheet or contact our sales team.
Custom OEM & ODM Solutions
Legom is a direct manufacturer offering end-to-end OEM and ODM services. With our in-house engineering and production capabilities, we work closely with distributors and system integrators to deliver fully customized solutions under strict NDA.
