- All
- Product Name
- Product Keyword
- Product Model
- Product Summary
- Product Description
- Multi Field Search
 |
603676A
Sunlight
603676A
DC steeper
24 VDC nominal(18 VDC to 32VDC allowable operating range)
0.4N.m
1.67±0.2rpm
≤0.1A
customized
less than 43 dB at 10cm
-40℃ to 85℃
0.550KG
90°
≤0.2N.m
more than 1000/L in the fully open position
IP54
more than 50,000 cycles
air leakage zero fault detection per 3 minutes at a 0.4Mpa pressure
internal leakage zero fault detection less than 950ml per hour at the temperature 85℃ under a hydraulic pressure of 0.1Mpa
| Quantity: | |
|---|---|
Model: 603676A
Brand: Sunlight
The Electric Water Valve 603676A is engineered to precisely regulate coolant flow in vehicle heating systems. Integrated into the engine’s water circulation loop, this valve modulates flow to the heater core, enabling consistent in-cabin temperature control. Equipped with a DC stepper motor actuator and 90° stem travel, it ensures reliable, accurate actuation under varied operating conditions.
| Feature | Specification | Benefit |
|---|---|---|
| Input Voltage | 24 VDC nominal (18–32 VDC allowable) | Compatible with most commercial vehicle systems |
| Rated Load Torque | 0.4 N·m | Smooth, stable valve actuation under load |
| Rated Load Speed | 1.67 ± 0.2 rpm | Precise modulation, minimal overshoot |
| Rated Load Current | ≤ 0.1 A | Energy-efficient performance |
| Stall Torque | ≥ 0.4 N·m | Strong startup under load |
| Stall Current | ≤ 0.5 A | Safe electrical limits |
| Noise Level | < 43 dB @ 10 cm | Quiet operation in vehicle cabin environment |
| Operating Temperature | –40 ℃ to +85 ℃ | Suitable for extreme climates |
| Net Weight | 0.550 kg | Compact and lightweight |
| Rotation Range | 90° | Ideal for open-close or modulated control |
| Opening / Closing Torque | ≤ 0.2 N·m | Low friction, responsive actuation |
| Flow Rate (Fully Open) | > 1000 L/h | High throughput for demanding heating needs |
| Protection Level | IP54 | Dust and splash resistant for engine bay environments |
| Service Life | ≥ 50,000 cycles | Durable and long-lasting |
| External Leakage | Zero leakage @ 0.4 MPa for 3 minutes | Excellent sealing performance |
Heating & cooling loops in commercial trucks and buses
Cabin HVAC systems in agricultural and construction machinery
Climate control in specialty, emergency, and utility vehicles
Any system requiring precise control of coolant or heater flow
Interested in full HVAC component systems? Explore our HVAC Solutions or check our selection of Brushless Fans for complementary parts.
Connector Type: Customized
Mounting Tips: Align smoothly with coolant lines, avoid sharp bends and air pockets
Wiring Advice: Provide slack for maintenance or replacement
Commissioning: Before putting into service, run a full open/close cycle test to verify smooth motion and no abnormal noise
Undergoes rigorous durability and environmental aging tests
Dual leakage inspection: external and internal
Accurate positioning and travel control
Validated under real-world vehicle operating conditions
Individually packaged with anti-vibration protection
Includes installation guide and test report
Customized packaging and labeling available upon request
A: It precisely regulates coolant flow to maintain consistent cabin temperature in vehicles with HVAC systems.
A: By accurately modulating coolant flow, it improves heating/cooling efficiency, reduces energy consumption, and provides more comfortable cabin conditions.
A: Yes, it is designed for a wide range of commercial vehicles, agricultural machines, and specialty vehicles.
A: Minimal maintenance is needed. Periodic inspection of connections and operation is recommended to ensure long-term reliability.
A: It operates effectively in extreme temperatures ranging from –40 ℃ to +85 ℃ and meets IP54 protection standards.
A: Yes. It integrates well with other HVAC components. For example, pairing it with our Brushless Fans ensures optimal climate control performance.
For pricing, bulk orders, or custom versions (e.g. different voltage, torque, connector types), please contact our sales team:
International Sales: Sunny Li / Alisa Chen / Frances Zhang / Vicky Li
For phone, email, and details, see our Contact Us page.
Model: 603676A
Brand: Sunlight
The Electric Water Valve 603676A is engineered to precisely regulate coolant flow in vehicle heating systems. Integrated into the engine’s water circulation loop, this valve modulates flow to the heater core, enabling consistent in-cabin temperature control. Equipped with a DC stepper motor actuator and 90° stem travel, it ensures reliable, accurate actuation under varied operating conditions.
| Feature | Specification | Benefit |
|---|---|---|
| Input Voltage | 24 VDC nominal (18–32 VDC allowable) | Compatible with most commercial vehicle systems |
| Rated Load Torque | 0.4 N·m | Smooth, stable valve actuation under load |
| Rated Load Speed | 1.67 ± 0.2 rpm | Precise modulation, minimal overshoot |
| Rated Load Current | ≤ 0.1 A | Energy-efficient performance |
| Stall Torque | ≥ 0.4 N·m | Strong startup under load |
| Stall Current | ≤ 0.5 A | Safe electrical limits |
| Noise Level | < 43 dB @ 10 cm | Quiet operation in vehicle cabin environment |
| Operating Temperature | –40 ℃ to +85 ℃ | Suitable for extreme climates |
| Net Weight | 0.550 kg | Compact and lightweight |
| Rotation Range | 90° | Ideal for open-close or modulated control |
| Opening / Closing Torque | ≤ 0.2 N·m | Low friction, responsive actuation |
| Flow Rate (Fully Open) | > 1000 L/h | High throughput for demanding heating needs |
| Protection Level | IP54 | Dust and splash resistant for engine bay environments |
| Service Life | ≥ 50,000 cycles | Durable and long-lasting |
| External Leakage | Zero leakage @ 0.4 MPa for 3 minutes | Excellent sealing performance |
Heating & cooling loops in commercial trucks and buses
Cabin HVAC systems in agricultural and construction machinery
Climate control in specialty, emergency, and utility vehicles
Any system requiring precise control of coolant or heater flow
Interested in full HVAC component systems? Explore our HVAC Solutions or check our selection of Brushless Fans for complementary parts.
Connector Type: Customized
Mounting Tips: Align smoothly with coolant lines, avoid sharp bends and air pockets
Wiring Advice: Provide slack for maintenance or replacement
Commissioning: Before putting into service, run a full open/close cycle test to verify smooth motion and no abnormal noise
Undergoes rigorous durability and environmental aging tests
Dual leakage inspection: external and internal
Accurate positioning and travel control
Validated under real-world vehicle operating conditions
Individually packaged with anti-vibration protection
Includes installation guide and test report
Customized packaging and labeling available upon request
A: It precisely regulates coolant flow to maintain consistent cabin temperature in vehicles with HVAC systems.
A: By accurately modulating coolant flow, it improves heating/cooling efficiency, reduces energy consumption, and provides more comfortable cabin conditions.
A: Yes, it is designed for a wide range of commercial vehicles, agricultural machines, and specialty vehicles.
A: Minimal maintenance is needed. Periodic inspection of connections and operation is recommended to ensure long-term reliability.
A: It operates effectively in extreme temperatures ranging from –40 ℃ to +85 ℃ and meets IP54 protection standards.
A: Yes. It integrates well with other HVAC components. For example, pairing it with our Brushless Fans ensures optimal climate control performance.
For pricing, bulk orders, or custom versions (e.g. different voltage, torque, connector types), please contact our sales team:
International Sales: Sunny Li / Alisa Chen / Frances Zhang / Vicky Li
For phone, email, and details, see our Contact Us page.
