HFT40061Z-01 Thermostatic Valve
The Legom HFT40061Z-01 Thermostatic Valve is a thermostatic mixing valve with NPT (National Pipe Thread) connections and a chrome-plated 57-3 copper body, designed for water heater installations in markets where NPT threading is the standard pipe connection system. Delivering the same thermostatic mixing performance as the G-thread HFT series — temperature adjustment range 20–60°C, control accuracy ±2°C, working pressure range 0.03–1 MPa — the HFT40061Z-01 provides direct compatibility with NPT plumbing systems without requiring thread adapters.
The chrome-plated finish distinguishes the HFT40061Z-01 from the nickel-plated HFT series, providing a bright, reflective surface treatment suited to visible or semi-exposed installation locations. Compatible with hot water inlet temperatures of 30–99°C and cold water inlet temperatures of 5–29°C, covering all standard electric, gas, solar thermal, and heat pump water heater types. Factory-preset temperature ranges are available for OEM and project orders requiring restricted operator adjustment.
Key Benefits
- NPT thread connections for direct North American and international compatibility – NPT (National Pipe Taper Thread) is the standard pipe thread in North America and widely used internationally. The HFT40061Z-01 connects directly to NPT plumbing without reducers or adapters, simplifying installation in NPT-standard systems
- Chrome-plated copper body – Bright chrome surface finish provides corrosion resistance with a premium visual appearance suited to visible installation points in plant rooms, utility areas, and semi-exposed locations where aesthetics matter alongside function
- ±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 allows full-range adjustment with factory-preset narrower ranges available for safety-restricted applications
- No electricity required – Self-acting thermostatic operation powered by the differential temperature of hot and cold supply water, requiring no electrical connection or control signal
- 57-3 copper body – High-quality copper alloy construction for durability in potable hot water service
- Wide pressure range 0.03–1 MPa – Covers gravity-fed low-pressure through standard mains-pressure water supply systems
- Compatible with all water heater types – 30–99°C hot inlet range covers electric, gas, solar thermal, and heat pump water heaters
- Customizable preset temperature ranges – OEM orders can specify factory-preset ranges for restricted-adjustment applications
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | HFT40061Z-01 |
| Body Material | 57-3 copper, chrome plated |
| Handwheel | ABS black, 40mm |
| Connection | NPT thread |
| 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 |
HFT40061Z-01 vs G-Thread HFT Models — Key Differences
| Parameter | HFT40061Z-01 | HFT30001 / HFT65001 etc. |
|---|---|---|
| Thread type | NPT (taper) | G (parallel) |
| Body finish | Chrome plated | Nickel plated |
| Handwheel | Black | Black or White |
| Market | North America, NPT markets | Europe, Asia, G-thread markets |
| Performance specs | Identical — same accuracy, range, pressure, temperature | |
Application & Use Cases
- North American water heater installations – NPT threading is the standard pipe connection in the United States and Canada. The HFT40061Z-01 installs directly into NPT-threaded water heater outlets and supply pipework without requiring G-to-NPT adapters
- International markets using NPT standard – Many countries outside Europe specify NPT threading for plumbing systems, particularly in the Americas and parts of Asia and the Middle East. The HFT40061Z-01 serves these markets without modification
- Export OEM water heater products – Manufacturers producing water heaters for export to NPT-standard markets can integrate the HFT40061Z-01 directly into their product without modifying the connection specification for different markets
- Domestic solar and electric water heaters with NPT connections – Compatible with all electric storage, gas instantaneous, solar thermal, and heat pump water heaters fitted with NPT outlet connections
- Visible installation locations requiring chrome finish – Where the TMV is installed in a semi-exposed location and the chrome plating’s reflective appearance is preferred over the matte finish of nickel plating
Installation Notes
- Connect hot water supply to the hot inlet (H), cold water supply to the cold inlet (C), and mixed water outlet (M) using male NPT fittings with appropriate NPT thread sealant (PTFE tape or pipe dope rated for hot water service)
- NPT is a taper thread — connections seal on the thread taper rather than on a face seal. Do not use G-thread (parallel) fittings with this valve
- Install isolation valves upstream of both hot and cold inlets to enable servicing without shutting down the water supply
- Install a strainer on the cold inlet to protect the thermostatic cartridge from debris
- The valve performs optimally at 0.1–0.5 MPa — verify inlet pressure at the installation point at peak flow
- After installation, verify outlet temperature at the furthest fixture with a calibrated thermometer before commissioning for occupant use
- To adjust set temperature, turn the black handwheel and allow 1 minute stabilisation before re-measuring
Frequently Asked Questions
What is the difference between NPT and G thread?
NPT (National Pipe Taper Thread) is an American standard thread with a slight taper — the thread diameter increases along the pipe, and the joint seals on the thread taper itself, typically with PTFE tape or pipe dope. G thread (BSP Parallel) is a European and international standard with a parallel thread that seals on a face washer or O-ring rather than on the thread taper. The two thread types are not interchangeable — NPT fittings cannot be used with G-thread valves and vice versa. The HFT40061Z-01 uses NPT and should only be connected with NPT-compatible fittings and sealant.
What NPT size is the HFT40061Z-01?
The specific NPT size (1/2″ NPT, 3/4″ NPT, or other) is not listed in the current product specification. Contact the Legom team to confirm the NPT size before ordering, particularly if the valve must match a specific heater outlet or pipework connection size in your installation.
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 that mechanically restrict handwheel travel. Contact the Legom team to specify the required preset range when ordering.
Is chrome plating as durable as nickel plating in hot water service?
Both chrome and nickel plating provide corrosion resistance for the underlying copper body in potable hot water environments. Chrome plating has a harder, more scratch-resistant surface and a brighter reflective appearance. Nickel plating provides a slightly warmer, matte finish. Both are appropriate for continuous hot water service within the valve’s rated temperature and pressure range.
OEM & ODM Customization
Legom supports OEM and ODM services for the HFT40061Z-01 Thermostatic Valve. Customization options include NPT size, preset temperature range, body finish, and handwheel design. 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.
