HFT40015Z-01 Thermostatic Diverter Valve, G1
The Legom HFT40015Z-01 Thermostatic Diverter Valve is a G1 thermostatic mixing valve with an integrated water inlet and outlet connector in a bottom inlet, side outlet configuration — a purpose-built geometry for water heater installations where supply connections enter the valve from the bottom and the mixed water outlet exits from the side of the body. By integrating the inlet connector directly into the valve body, the HFT40015Z-01 reduces the external fitting count at the water heater connection point and provides a compact, self-contained mixing assembly suited to OEM water heater product integration.
Sharing the same thermostatic mixing performance as the wider HFT series — temperature adjustment range 20–60°C, control accuracy ±2°C, working pressure range 0.03–1 MPa — the HFT40015Z-01 is designed for installations where the standard inline or side outlet configurations do not match the pipework geometry, and where a dedicated bottom-inlet/side-outlet mixing valve simplifies the overall connection assembly. Manufactured from 57-3 copper with surface plating, compatible with hot water inlet 30–99°C and cold water inlet 5–29°C.
Key Benefits
- Bottom inlet, side outlet — dedicated connection geometry – Hot and cold water supplies enter the valve from the bottom while the mixed water outlet exits from the side, matching specific water heater pipework layouts where vertical supply connections and horizontal distribution are required without additional fittings
- Integrated water inlet and outlet connector – The inlet connections are integrated directly into the valve body rather than being separate threaded ports, creating a compact self-contained assembly that reduces the total fitting count at the connection point and eliminates additional joints
- G1 connection for mid-commercial flow capacity – The DN25 bore provides higher flow capacity than domestic G3/4 models, suited to larger domestic and light commercial water heater installations requiring more throughput
- ±2°C temperature control accuracy – Consistent mixed water delivery within ±2°C of the set point across varying supply pressure and temperature conditions
- 20–60°C adjustment range – ABS black handwheel for full-range commissioning adjustment, with factory-preset narrower ranges available for safety applications
- No electricity required – Self-acting thermostatic operation requiring no electrical connection at the valve
- 57-3 copper with surface plating – Durable copper alloy body for potable hot water service
- Wide pressure range 0.03–1 MPa – Covers gravity-fed through mains-pressure water supply systems
- OEM integration ready – The integrated connector design and specific inlet/outlet geometry make this model particularly suited to OEM water heater product assembly
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | HFT40015Z-01 |
| Body Material | 57-3 copper, surface plated |
| Handwheel | ABS black |
| Connection | G1 internal thread (DN25) |
| Valve Type | Thermostatic diverter valve |
| Inlet Direction | Bottom (integrated connector) |
| Outlet Direction | Side |
| 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 (OEM integration, domestic and light commercial) |
HFT Outlet Configuration Comparison
| Model | Inlet Direction | Outlet Direction | Connector Type |
|---|---|---|---|
| HFT30001 / HFT65001 etc. | Side (inline) | Side (inline) | Standard threaded ports |
| HFT40022/23/24Z-01 | Side (inline) | Side (90°) | Standard threaded ports |
| HFT40015Z-01 | Bottom | Side | Integrated connector |
Application & Use Cases
- OEM water heater product integration – The integrated connector design and specific bottom-in/side-out geometry are purpose-built for water heater manufacturers who need a compact, self-contained thermostatic mixing assembly that connects directly to the heater’s bottom connections and exits to the side distribution pipe
- Vertical supply, horizontal distribution layouts – Installations where hot and cold water supply pipes approach the valve from below (vertical risers) and the mixed distribution pipe exits horizontally to the side, a common configuration in wall-hung water heater installations
- Compact installation assemblies – Where eliminating separate inlet fittings by using the integrated connector reduces the physical footprint of the valve assembly at the heater connection point
- Solar thermal and heat pump water heaters – OEM-integrated TMV assembly on solar storage tanks and heat pump cylinders where the bottom connection geometry matches the heater’s standard outlet configuration
Installation Notes
- Connect the hot and cold water supplies to the bottom integrated inlet connector — the integration of the inlet connector into the valve body means connections are made directly to the integrated fitting rather than to separate threaded ports
- Connect distribution pipework to the side mixed outlet (M) using male G1 fittings with appropriate thread sealant
- Plan pipework to align with the bottom inlet and side outlet orientations before installation — the fixed geometry of the integrated connector means the valve cannot be rotated to a different orientation once connected
- Install isolation valves upstream of both hot and cold supply lines
- Install a strainer on the cold inlet to protect the thermostatic cartridge
- The valve performs optimally at 0.1–0.5 MPa
- Verify outlet temperature at the furthest fixture with a calibrated thermometer after installation
- For OEM integration specifications including dimensional drawings and connection interface details, contact the Legom technical team directly
Frequently Asked Questions
What does “integrated water inlet and outlet connector” mean?
In standard TMVs, the hot inlet, cold inlet, and mixed outlet are individual threaded ports on the valve body that accept separate pipe fittings. In the HFT40015Z-01, the inlet connector is built into the valve body as an integrated component — the hot and cold water connections are made directly to this integrated fitting rather than to separate threaded ports. This reduces the number of individual fittings and joints required at the connection point, creating a more compact and streamlined assembly, particularly in OEM water heater integration where minimizing connection count is a product design objective.
How does the bottom inlet, side outlet geometry differ from other HFT models?
Most HFT thermostatic valves have inline connections where water enters and exits on the same horizontal axis, or side outlet models where inlets are inline and the mixed outlet exits at 90°. The HFT40015Z-01 has a fundamentally different geometry: the hot and cold supply connections enter the valve from the bottom (vertically), while the mixed water exits from the side (horizontally). This matches water heater installations where supply risers approach from below and distribution pipework exits horizontally — without requiring additional elbow fittings to change direction at the valve.
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. For OEM integration projects, dimensional drawings, connection interface specifications, and custom preset ranges can be provided. Contact the Legom team with your complete OEM requirements.
OEM & ODM Customization
Legom supports full OEM and ODM services for the HFT40015Z-01 Thermostatic Diverter Valve. Customization options include inlet and outlet orientation, preset temperature range, connection size, integrated connector specification, and body finish. This model is particularly suited to OEM water heater integration projects — contact us with your complete assembly requirements 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.
