Quick Summary
The HTW-W27-5W 5-wire motorized valve combines a forged brass valve body with a matched actuator for hydronic HVAC systems. It is designed for normally closed on/off control of chilled water and hot water in fan coil unit applications, with both 2-way shut-off and 3-way diverting options.
This page helps HVAC contractors, distributors, project buyers, and OEM customers check whether this valve suits their system. It explains 5-wire actuator logic, valve structure, model selection, wiring reference, technical limits, customization options, and common purchasing questions.
5-Wire Motorized Valve for Hydronic HVAC Projects
The HTW-W27-5W valve is designed for HVAC water flow control where clear open, close, and common wiring signals are required. It is mainly used in fan coil unit systems, chilled water loops, hot water circuits, and building zone control applications.
For B2B buyers, the main selection points are not only valve size. The actuator wiring type, voltage, valve structure, thread standard, pressure rating, water temperature, and default valve position should all be checked before ordering. This helps reduce wrong model selection and improves installation reliability.
| Item | Recommended Check Point |
|---|---|
| Application | FCU water control, hydronic HVAC, chilled water, hot water, zone control |
| Control Logic | Normally closed on/off control |
| Actuator Type | 5-wire actuator for open, close, and common signal control |
| Valve Structure | 2-way for shut-off; 3-way for diverting flow |
| Connection | BSP standard; NPT customization can be discussed |
| Buyer Fit | Suitable for HVAC contractors, wholesalers, distributors, system integrators, and OEM projects |
Key Functional Highlights
(This section explains the main engineering value of the 5-wire motorized valve and actuator assembly in HVAC water systems.)
(01) 5-Wire Control Design
This 5-wire motorized valve provides clear wiring for open, close, and common signal control. It is useful when the control panel or thermostat requires defined actuator movement instead of simple two-wire switching. This helps reduce wiring confusion during project installation.
(02) 2-Way and 3-Way Valve Options
The valve is available in both 2-way and 3-way versions. A 2-way valve is suitable for shut-off control on one water line. A 3-way valve is more suitable when the system needs diverting water flow according to the HVAC piping design.
(03) FCU Water Flow Control
This valve controls chilled or hot water flow through fan coil units. Stable water control helps maintain room comfort, improves system response, and reduces unnecessary energy use caused by uncontrolled flow.
(04) Normally Closed Safety Function
The valve is normally closed in its default condition. This helps prevent unwanted water flow when power is off or the system is not calling for operation. It is suitable for HVAC projects that require predictable water shut-off logic.
(05) Forged Brass Valve Body
The forged brass valve body provides stable mechanical strength for standard HVAC water applications. It is suitable for chilled water and hot water systems within the rated pressure and temperature range.
(06) BSP Thread with Custom Option
BSP thread is standard for this valve series. If your market or project requires NPT connection, customization can be discussed based on order quantity and project requirements.
Product Design and Display
(Place the product scene image and multi-angle product images here. This section should show the actuator, valve body, thread connection, and installation form clearly.)
How to Choose 2-Way or 3-Way Valve
Many buyers choose the valve only by pipe size, but the correct structure depends on the water circuit. The table below gives a simple selection guide for FCU and hydronic HVAC projects.
| Project Requirement | Recommended Valve Type | Why It Matters |
|---|---|---|
| Simple water shut-off on one pipe | 2-way motorized valve | Suitable for normal FCU on/off water control |
| Water needs to be redirected between paths | 3-way motorized valve | Supports diverting flow based on system design |
| Project needs fail-safe water shut-off | Normally closed valve | Helps prevent unwanted flow when power is off |
| Controller needs separate open and close signals | 5-wire actuator valve | Provides clearer wiring logic for control integration |
Model Code and Size Options
(Place this table near the ordering section so buyers can quickly match pipe size, valve way, and model code.)
| Model Code | Size |
|---|---|
| HTW-W27-5W-215 / 315 | 215 = 2-way + DN15 (1/2 inch); 315 = 3-way + DN15 (1/2 inch) |
| HTW-W27-5W-220 / 320 | 220 = 2-way + DN20 (3/4 inch); 320 = 3-way + DN20 (3/4 inch) |
| HTW-W27-5W-225 / 325 | 225 = 2-way + DN25 (1 inch); 325 = 3-way + DN25 (1 inch) |
| For example, HTW-W27-5W-220 refers to a 2-way DN20 (3/4 inch) motorized valve with standard 220Vac power supply, BSP thread, and 5-wire actuator. To confirm the correct sub-model for your project, please feel free to get in touch with us directly. | |
Technical Specifications
(Place this section before wiring and inquiry guidance. It helps engineers check whether the valve matches the system requirements.)
| Parameter | Value |
|---|---|
| Valve Type | 5-Wire Motorized Valve |
| Control Signal | On/Off, normally closed |
| Power Supply | 220VAC standard; 24VAC / 110VAC optional |
| Connection Type | BSP standard; NPT optional by customization |
| Power Consumption | 6.5W |
| Pressure Rating | 1.6 MPa |
| Working Temperature | 5°C ~ 40°C |
| Water Temperature | 5°C ~ 90°C |
| Valve Body | Forged brass |
| Available Sizes | DN15, DN20, DN25 |
| Typical Applications | FCU, hydronic HVAC, chilled water, hot water, zone control |
5-Wire Actuator Control: When Is It Useful?
A 5-wire actuator is useful when the project needs clearer separation between opening, closing, and common control signals. Compared with simpler wiring types, it can make integration easier in some HVAC control panels, thermostats, or building automation applications.
| Control Need | Why 5-Wire Design Helps |
|---|---|
| Separate open and close control | Allows clearer actuator direction control |
| Building automation integration | Reduces confusion when connecting to controllers or relay outputs |
| Project wiring standardization | Helps installers follow a consistent wiring structure across multiple units |
| Maintenance and troubleshooting | Clear wiring logic makes fault checking easier during service |
Wiring and Flow Direction
(Place wiring and flow direction diagrams here. This section should appear before customization information because it helps installers and engineers check connection logic.)
Buyer Selection Checklist
Before ordering this 5-wire motorized valve, confirm the following points. This helps avoid wiring mismatch, wrong valve structure, unsuitable thread standard, and incorrect voltage selection.
| No. | Check Point | What to Confirm |
|---|---|---|
| 1 | System Type | FCU, chilled water, hot water, or hydronic HVAC zone control |
| 2 | Valve Structure | 2-way for shut-off; 3-way for diverting flow |
| 3 | Pipe Size | DN15, DN20, or DN25 according to pipe design and flow rate |
| 4 | Actuator Wiring | Confirm whether the controller needs 5-wire open/close/common logic |
| 5 | Power Supply | 220VAC standard, or 24VAC / 110VAC if required |
| 6 | Connection Standard | BSP standard; NPT only if customized |
| 7 | Working Medium | Cold water or hot water, not steam or corrosive media |
| 8 | OEM Needs | Logo, label, packaging, wire length, and actuator identification |
Common Selection Mistakes
Choosing only by DN size. Pipe size is only one part of valve selection. Buyers should also confirm wiring type, voltage, valve way, thread standard, pressure rating, and water temperature.
Using the valve for unsuitable media. This valve is designed for chilled water and hot water. It should not be used for steam, corrosive fluids, or media outside the rated temperature range.
Mixing up 2-way and 3-way applications. A 2-way valve is mainly for shut-off control. A 3-way valve is for diverting flow. If the wrong structure is selected, the water circuit may not work as expected.
Ignoring wiring compatibility. The 5-wire actuator should match the control output from the thermostat, controller, or BMS relay. Incorrect wiring may cause unstable operation or commissioning delays.
Project Fit and Customization
(Place this section after technical specifications and selection guidance. It helps project buyers decide whether to send an inquiry.)
This 5-wire motorized valve is suitable for standard hydronic HVAC projects that use chilled water or hot water. It is commonly selected for fan coil units, small zone control systems, commercial buildings, hotel HVAC projects, and OEM equipment integration.
It is not suitable for steam systems, corrosive media, or applications where pressure and temperature exceed rated limits. If your project involves special fluid, high temperature, high pressure, or non-standard control signals, another valve type should be evaluated before ordering.
For project-based orders, power supply, wiring type, connection standard, wire length, actuator identification, logo printing, label design, and packaging can be discussed. These options depend on order quantity, certification needs, and market requirements.
For distributors, wholesalers, HVAC contractors, and OEM buyers, we can help check the model before order confirmation. Please share pipe size, voltage, 2-way or 3-way requirement, connection standard, wiring logic, medium, pressure condition, and expected quantity.
Certificates and Compliance
(This valve product is designed for HVAC applications and can comply with CE-related requirements for the European market.)
Exhibition Moments
(Our team regularly participates in international HVAC exhibitions such as Febrava in Brazil, The Big 5 in Dubai, and ISK-SODEX in Turkey, etc.)
Frequently Asked Questions
Q1: When should I choose this 5-wire motorized valve?
This 5-wire motorized valve is suitable when your HVAC project needs normally closed on/off water control with clear open, close, and common wiring signals. It is commonly used in FCU and hydronic zone control systems.
Q2: What is the advantage of 5-wire actuator design?
The 5-wire actuator design provides clearer wiring logic for opening and closing control. It helps reduce wiring mistakes and is useful when the controller requires separate actuator direction signals.
Q3: How do I choose between 2-way and 3-way valve?
Choose a 2-way valve for simple shut-off control on one water line. Choose a 3-way valve when the system needs diverting flow. The correct choice depends on the piping layout and control logic.
Q4: Can this valve support different voltages?
Yes. 220VAC is standard, while 24VAC and 110VAC options are available. Please confirm the project voltage before ordering to avoid actuator mismatch.
Q5: What happens during power failure?
The valve remains in its normally closed default position. This helps prevent unwanted water flow and supports safer HVAC system operation when power is off.
Q6: What medium and temperature range are suitable?
This valve is designed for chilled water and hot water. The water temperature range is 5°C to 90°C, and it should not be used for steam or corrosive media.
Q7: Can the connection standard be customized?
BSP thread is standard. NPT connection can be discussed for custom projects depending on order quantity and detailed requirements.
Q8: What is the MOQ and do you support samples?
We support sample orders for testing. The typical MOQ is 100 units, but it can be discussed depending on project needs.
Q9: How can we place an order?
Please share your requirements with us first. We will provide a PI for confirmation. Payment options include TT, PayPal, and Visa, with EXW, FOB, or DAP terms available by discussion.
Q10: What is the lead time?
Standard samples can be shipped within 7 days. Custom orders usually take 3–5 weeks depending on customization details. A batch of 100 units typically takes about one month.
Q11: What shipping methods are available?
Courier delivery usually takes around 7 days. Air freight is similar, while sea shipping takes about one month or longer depending on destination.
Need Help Choosing the Right Model?
If you are not sure which 5-wire motorized valve suits your project, please feel free to get in touch with us. We can help check pipe size, actuator voltage, wiring logic, valve structure, connection standard, and OEM details before order confirmation.
Related Valve Models
To find out other valves, please click here directly:
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Ball Valves |
If one is looking for the thermostat also, please click here:
FCU Wi-Fi Thermostat |FCU Modbus Thermostat |
Heating Thermostat
Final NoteThe HTW-W27-5W 5-wire motorized valve is built for hydronic HVAC projects that need stable on/off water control, normally closed operation, and clear actuator wiring logic. It is most suitable for FCU water control, chilled water systems, hot water systems, and building zone control applications.
For OEM buyers, HVAC contractors, distributors, and system integrators, the best next step is to confirm valve size, 2-way or 3-way structure, voltage, wiring logic, water medium, pressure condition, and customization needs before ordering. This reduces selection mistakes and improves project delivery reliability.
