HFT36002Z-01 Thermostatic Valve, G3/4
The Legom HFT36002Z-01 Thermostatic Valve is a G3/4 thermostatic mixing valve with a green ABS handwheel, natural color pickled movable inlet and outlet joints, and a 57-3 copper body — the standard domestic connection size counterpart to the G1 HFT36003Z-01. The movable joints allow inlet and outlet connections to be repositioned to accommodate offset or misaligned pipework without additional fittings, while the natural color pickling leaves a clean, bright natural brass surface on the joint connection areas.
Temperature adjustment range 20–60°C, control accuracy ±2°C, working pressure range 0.03–1 MPa, 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
- Green handwheel at the standard domestic TMV size – The distinctive green ABS handwheel provides color-coding identification and OEM branding capability at the most common domestic water heater connection size — enabling multi-valve color differentiation and green brand scheme coordination at G3/4
- Natural color pickled movable joints – Movable joints with acid-cleaned natural brass surfaces combine installation flexibility with a clean, oxide-free connection finish without an applied plating layer
- Movable inlet and outlet joints – Full positional flexibility at all connection points to accommodate offset or misaligned pipework in retrofit and confined-space installations
- 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
- 20–60°C adjustment range – Full-range 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 | HFT36002Z-01 |
| Body Material | 57-3 copper |
| Handwheel | ABS green |
| Connection | G3/4 internal thread (DN20) |
| Joint Type | Movable inlet and outlet joints |
| Joint Surface Treatment | Natural color pickling (acid cleaned, no plating) |
| 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 (domestic, OEM) |
HFT Green Movable Joint Series
| Model | Connection | Bore | Typical Use |
|---|---|---|---|
| HFT36002Z-01 | G3/4 | DN20 | Standard domestic water heater |
| HFT36003Z-01 | G1 | DN25 | Larger domestic / light commercial |
Application & Use Cases
- Standard domestic water heater installations requiring color identification – Where green handwheel color coding distinguishes this valve’s circuit or function from other valves in a multi-valve installation at the most common domestic TMV connection size
- OEM water heater products with green color specification at G3/4 – The most commonly specified OEM TMV connection size with a green handwheel for brand color coordination
- Retrofit installations with misaligned pipework – Replacing an existing G3/4 TMV where the supply pipe positions do not align with a standard fixed-port valve body — movable joints accommodate the misalignment without pipework modification
- All standard domestic water heater types – Compatible with electric, gas, solar thermal, and heat pump water heaters with G3/4 outlet connections
- Confined installation spaces – Where movable joints provide the connection angle adjustment needed to reach offset supply pipes in tight cabinet or in-wall locations
Installation Notes
- Position the valve and adjust the movable joints on all connections (H, C, M) to align with the actual pipe positions before tightening
- The pickled joint surfaces are clean and oxide-free — apply thread sealant directly to the natural brass surface
- Tighten all movable joint connections fully and evenly after alignment — partial tightening can result in leakage under operating pressure
- 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
- Check all movable joint connections under operating pressure for leaks before commissioning
- Verify outlet temperature at the furthest fixture with a calibrated thermometer after installation
Frequently Asked Questions
When should I choose the HFT36002Z-01 over the HFT36003Z-01?
Choose the HFT36002Z-01 when the water heater outlet or supply pipework is G3/4 (DN20) — the standard domestic size. Choose the HFT36003Z-01 when the connection is G1 (DN25), which suits larger domestic or light commercial systems with higher flow demand. Both share the green handwheel, natural color pickled movable joints, 57-3 copper body, and identical thermostatic performance.
What is natural color pickling on the movable joints?
Pickling is an acid-cleaning process that removes surface oxides from the copper alloy joint surfaces, leaving a clean, bright natural brass finish without any applied plating layer. The pickled surface has no risk of plating delamination under the mechanical stress of joint adjustment during installation, and provides a clean, oxide-free surface for reliable thread sealant adhesion at the connection points.
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 green handwheel color can be customized to other colors for OEM branding. Contact the Legom team with your requirements.
OEM & ODM Customization
Legom supports OEM and ODM services for the HFT36002Z-01 Thermostatic Valve. Customization options include handwheel color, preset temperature range, movable joint configuration, connection size, 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.
