HFT40007H-01 Thermostatic Mixing Valve, G3/4
The Legom HFT40007H-01 Thermostatic Mixing Valve is a G3/4 thermostatic mixing valve featuring an electroplated handwheel and external water inlet and outlet connectors, designed for water heater installations where a premium metallic handwheel finish is required alongside the connection flexibility of external connectors. The electroplated handwheel provides a high-quality metallic surface treatment that elevates the valve’s visual appearance beyond standard ABS plastic handwheels, suited to premium OEM water heater products and visible installation environments.
Manufactured from 57-3 copper, the HFT40007H-01 delivers standard HFT thermostatic mixing performance — temperature adjustment range 20–60°C, control accuracy ±2°C, working pressure range 0.03–1 MPa — with the addition of external connectors that provide positioning flexibility at the inlet and outlet connection points. Compatible with hot water inlet 30–99°C and cold water inlet 5–29°C.
Key Benefits
- Electroplated handwheel — premium metallic finish – Unlike standard ABS plastic handwheels, the electroplated handwheel has a metallic surface coating applied through electroplating, providing the appearance and tactile quality of a metal component while retaining the dimensional precision of ABS. This finish is significantly more premium in appearance than silk-screen printed or plain plastic handwheels and suits high-end OEM products and visible installation environments
- External water inlet and outlet connectors – External connectors provide positional flexibility at the connection points, accommodating pipework that does not align perfectly with standard fixed-port valve body positions and simplifying integration into OEM water heater assemblies with defined connection positions
- G3/4 — standard domestic water heater connection – Direct compatibility with standard domestic storage water heater outlets and G3/4 supply pipework
- ±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 – Full-range commissioning flexibility with factory-preset narrower ranges available for safety applications
- No electricity required – Self-acting thermostatic operation with no electrical connection needed
- 57-3 copper body – High-quality copper alloy construction for durable potable hot water service
- Wide pressure range 0.03–1 MPa – Covers gravity-fed through standard mains-pressure systems
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | HFT40007H-01 |
| Body Material | 57-3 copper |
| Handwheel | ABS with electroplating |
| Connection | G3/4 internal thread (DN20) |
| Connector Type | External water inlet and outlet connector |
| 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 (premium domestic, OEM integration) |
HFT Handwheel Finish Comparison
| Handwheel Type | Models | Appearance | Best For |
|---|---|---|---|
| Plain ABS black | HFT40010/11/13/14/15Z-01 etc. | Matte black plastic | Standard utility installation |
| Silk-screen black | HFT30001 G3/4, HFT40020Z-01 | Black with printed markings | Standard with scale reference |
| Spark pattern black | HFT40004/08/09/12Z-01 | Black with graphic print | OEM differentiation |
| White silk-screen | HFT65001, HFT47001/02, SMA series | White with printed scale | Light-toned environments |
| Gray glossy silk-screen | HFT33016/17Z-01 | Gray gloss with graphics | Neutral modern aesthetic |
| Electroplated | HFT40007H-01 | Metallic surface finish | Premium OEM products, visible installs |
Application & Use Cases
- Premium OEM water heater products – The electroplated handwheel provides a significantly elevated appearance versus standard plastic handwheel models, suited to premium-tier water heater product lines where component appearance is a product quality signal to end users
- Visible and semi-exposed installation environments – Where the TMV is installed in a location visible to the building occupant — bathroom utility panels, open plant rooms, or visible service connections — and the metallic handwheel finish coordinates with premium fitting aesthetics
- Standard domestic water heater installations requiring premium finish – Compatible with all G3/4 domestic electric, gas, solar thermal, and heat pump water heaters where the electroplated handwheel is the primary specification differentiator
- Installations with external connector requirements – Where the supply or distribution pipework positions require external connector flexibility to connect without alignment modification
Installation Notes
- Connect hot water supply to the hot inlet via the external inlet connector (H), cold water to the cold inlet (C), and distribution pipework to the external outlet connector (M) using appropriate thread sealant
- Install isolation valves upstream of both hot and cold inlets
- 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
- Handle the electroplated handwheel carefully during installation — avoid contact with thread sealant or pipe compounds on the handwheel surface, which can stain the metallic finish
- Flush supply lines before installation to remove debris
Frequently Asked Questions
What is an electroplated handwheel and how does it differ from standard ABS?
Electroplating is a process that deposits a thin metallic coating — typically chrome, nickel, or a similar metal — onto the ABS plastic handwheel substrate through an electrochemical process. The result is a handwheel with the dimensional precision and light weight of ABS plastic combined with a hard, glossy metallic surface finish that is visually indistinguishable from a solid metal component at normal viewing distances. This is a significant step above silk-screen printed or plain plastic handwheels in both appearance and surface hardness, making it the premium handwheel specification across the Legom HFT thermostatic valve range.
What are external connectors and how do they help with installation?
External connectors are connection fittings that extend the valve’s inlet and outlet connection points outward from the valve body, providing more reach and positional flexibility than standard fixed threaded ports on the valve body itself. This is particularly useful when the supply or distribution pipework does not reach the valve body’s standard port positions directly, allowing the external connectors to bridge the gap without requiring additional elbow or extension fittings in the main pipework run.
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. The electroplating finish on the handwheel can also be specified in different metallic colors (chrome, satin nickel, gold) for OEM branding requirements. Contact the Legom team with your specifications.
OEM & ODM Customization
Legom supports OEM and ODM services for the HFT40007H-01 Thermostatic Mixing Valve. Customization options include electroplating color and finish, preset temperature range, external connector specification, connection size, and body finish. The electroplated handwheel can be specified in chrome, satin nickel, or other metallic finishes. 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.
