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603697A
Sunlight
603697A
DC brush
12 VDC nominal
0.4N.m
4±1rpm
≤0.1A
≥1.1N.m
≤0.5A
Sleeve 174259-2,Connector 173706-1
less than 45 dB at 10cm
-40℃ to 85℃
0.220KG
90°
≤0.2N.m
more than 1000/L in the fully open position
IP67
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: 603697A
Brand: Sunlight
The Electric Water Valve 603697A is built to provide precise modulation of coolant flow in vehicle heating and HVAC systems. By regulating the coolant sent to the heater core, it helps maintain a comfortable cabin temperature while optimizing energy usage. Its controlled actuator, tight sealing, and resistance to harsh environments make it ideal for demanding automotive applications.
From the product listing, key specs include 12 VDC input, 0.4 N·m rated torque, ~4 ± 1 rpm operating speed, noise < 45 dB (at 10 cm), rotational range 90°, IP67 water resistance, and lifespan exceeding 50,000 cycles.
| Feature | Specification | Advantage |
|---|---|---|
| Input Voltage | 12 VDC nominal | Works with common automotive systems |
| Rated Load Torque | 0.4 N·m | Stable movement under load |
| Rated Speed | ~4 ± 1 rpm | Smooth, controllable actuation |
| Stall Torque | ≥ 1.1 N·m | Reliable startup under resistance |
| Noise Level | < 45 dB @ 10 cm | Quiet operation inside vehicle cabin |
| Ambient Temperature | –40 ℃ to +85 ℃ | Operates in extreme climates |
| Rotational Range | 90° | Good modulation span |
| Flow Rate (Fully Open) | > 1000 L/h | Sufficient capacity for many HVAC systems |
| Protection | IP67 | High-level defense against dust and water |
| Service Life | > 50,000 cycles | Long durability |
| External Leakage | Zero leakage in 3 min @ 0.4 MPa | Strong sealing |
| Internal Leakage | ≤ 950 mL/h @ 85 ℃ under 0.1 MPa | Controlled seepage |
Advantages
High Water & Dust Resistance (IP67) – able to withstand immersion and contaminants
Quiet Operation – low noise ensures passenger comfort
Extended Lifespan – rated for over 50,000 cycles, reducing maintenance
Precision Control – accurate coolant flow modulation
Robust Design – can perform under extreme temperatures
Good Flow Capacity – meets heating demand in many systems
Heater circuits in trucks, buses, SUVs
Cabin climate control for construction & agricultural machinery
Heating / defrost systems in specialty and utility vehicles
Any circuit needing reliable coolant modulation
Want matching components? Browse our HVAC Solutions or check compatible items in our Brushless Fans catalog.
Use the specified connector type per product spec
Mount inline with coolant lines, minimizing bends and avoiding air pockets
Ensure wiring slack for service and maintenance
Commission by cycling fully open → fully closed to verify smooth motion and detect any abnormalities
Undergoes rigorous cycle and environmental aging tests
External and internal leakage testing
Precise stem travel control and positioning
Validated for real-world automotive cycles and stresses
A: The nominal voltage is 12 VDC. For 24V systems, please consult for variant models.
A: IP67 means it is fully dust-tight and can survive immersion in water up to a certain depth for limited time.
A: Very minimal — periodic inspection of wiring and verifying smooth actuation is typically sufficient.
A: It is designed to handle stalls up to its stall torque; current protection and built-in safety features prevent damage.
A: It is primarily designed for flow in the intended direction; reverse flow usage should be tested carefully for sealing.
A: Yes, this valve integrates well with other system components. For optimal performance, pair with our Brushless Fans and full solutions in HVAC Solutions.
For pricing, customization (voltage, torque, connectors), or integration support, please reach out to our sales team:
International Sales Department
See our Contact Us page for direct lines and emails.
Model: 603697A
Brand: Sunlight
The Electric Water Valve 603697A is built to provide precise modulation of coolant flow in vehicle heating and HVAC systems. By regulating the coolant sent to the heater core, it helps maintain a comfortable cabin temperature while optimizing energy usage. Its controlled actuator, tight sealing, and resistance to harsh environments make it ideal for demanding automotive applications.
From the product listing, key specs include 12 VDC input, 0.4 N·m rated torque, ~4 ± 1 rpm operating speed, noise < 45 dB (at 10 cm), rotational range 90°, IP67 water resistance, and lifespan exceeding 50,000 cycles.
| Feature | Specification | Advantage |
|---|---|---|
| Input Voltage | 12 VDC nominal | Works with common automotive systems |
| Rated Load Torque | 0.4 N·m | Stable movement under load |
| Rated Speed | ~4 ± 1 rpm | Smooth, controllable actuation |
| Stall Torque | ≥ 1.1 N·m | Reliable startup under resistance |
| Noise Level | < 45 dB @ 10 cm | Quiet operation inside vehicle cabin |
| Ambient Temperature | –40 ℃ to +85 ℃ | Operates in extreme climates |
| Rotational Range | 90° | Good modulation span |
| Flow Rate (Fully Open) | > 1000 L/h | Sufficient capacity for many HVAC systems |
| Protection | IP67 | High-level defense against dust and water |
| Service Life | > 50,000 cycles | Long durability |
| External Leakage | Zero leakage in 3 min @ 0.4 MPa | Strong sealing |
| Internal Leakage | ≤ 950 mL/h @ 85 ℃ under 0.1 MPa | Controlled seepage |
Advantages
High Water & Dust Resistance (IP67) – able to withstand immersion and contaminants
Quiet Operation – low noise ensures passenger comfort
Extended Lifespan – rated for over 50,000 cycles, reducing maintenance
Precision Control – accurate coolant flow modulation
Robust Design – can perform under extreme temperatures
Good Flow Capacity – meets heating demand in many systems
Heater circuits in trucks, buses, SUVs
Cabin climate control for construction & agricultural machinery
Heating / defrost systems in specialty and utility vehicles
Any circuit needing reliable coolant modulation
Want matching components? Browse our HVAC Solutions or check compatible items in our Brushless Fans catalog.
Use the specified connector type per product spec
Mount inline with coolant lines, minimizing bends and avoiding air pockets
Ensure wiring slack for service and maintenance
Commission by cycling fully open → fully closed to verify smooth motion and detect any abnormalities
Undergoes rigorous cycle and environmental aging tests
External and internal leakage testing
Precise stem travel control and positioning
Validated for real-world automotive cycles and stresses
A: The nominal voltage is 12 VDC. For 24V systems, please consult for variant models.
A: IP67 means it is fully dust-tight and can survive immersion in water up to a certain depth for limited time.
A: Very minimal — periodic inspection of wiring and verifying smooth actuation is typically sufficient.
A: It is designed to handle stalls up to its stall torque; current protection and built-in safety features prevent damage.
A: It is primarily designed for flow in the intended direction; reverse flow usage should be tested carefully for sealing.
A: Yes, this valve integrates well with other system components. For optimal performance, pair with our Brushless Fans and full solutions in HVAC Solutions.
For pricing, customization (voltage, torque, connectors), or integration support, please reach out to our sales team:
International Sales Department
See our Contact Us page for direct lines and emails.
