Brass Water Valve with Waterproof Actuator
High-Durability, Industrial-Grade Flow Control for Automotive and Heavy-Duty HVAC Systems
Product Overview
The Valvola dell'acqua in ottone is a premium-grade, electrically operated flow control valve engineered for demanding industrial, commercial, and automotive applications where reliability, corrosion resistance, and long-term performance are critical. Unlike standard ABS plastic valves, this model features a solid brass valve body, offering superior strength, thermal stability, and resistance to high-pressure and high-temperature environments.
Designed for use in vehicle-based HVAC systems, refrigeration units, engineering trucks, construction equipment, and mobile heating solutions, the Brass Water Valve ensures precise control of hot or cold water flow—essential for maintaining optimal cabin temperature, engine cooling, or refrigerant circulation.
Its waterproof actuator housing protects internal components from moisture, dust, and vibration, making it ideal for harsh operating conditions such as off-road vehicles, heavy machinery, and marine applications. With support for 2-wire, 3-wire, or 5-wire configurations, it offers flexible integration into both simple and advanced control systems.
This valve is not just a replacement part—it’s a performance upgrade that delivers durability, precision, and peace of mind in the most challenging environments.
Key Features & Technical Advantages
- Solid Brass Construction:
The valve body is made from high-purity brass (CuZn37), providing:- Exceptional resistance to corrosion, scaling, and mineral buildup
- Superior mechanical strength under high pressure
- Long-term integrity in hot water systems (up to 100°C)
- No risk of cracking or warping like plastic alternatives
- Waterproof Actuator Housing:
The electric actuator is fully enclosed in a IP67-rated waterproof shell, protecting against:- Moisture ingress (rain, condensation)
- Dust and debris accumulation
- Vibration-induced wear
- Electrical short circuits
- Multiple Control Options:
Supports three wiring configurations for versatile integration: Tipo Wires Functionality ON/OFF Type 2-wire Open/close via polarity reversal Tipo di interruttore ON/OFF 3-wire Toggle via control wire signal Temp Feedback Type 5-wire Position feedback to HVAC ECU Ideal for both basic climate control and intelligent systems requiring real-time monitoring. - High-Pressure & High-Temperature Performance:
- Operating Temperature Range: -5°C to +100°C
- Max Operating Pressure: Up to 1.0 MPa (DN20)
- Leakage Rate: <1 L/h (factory-tested for zero leakage)
- Maintenance-Free Design:
Built with self-lubricating seals and non-stick valve seats, it requires no periodic servicing—reducing downtime and maintenance costs in fleet operations. - Robust Mechanical Design:
- Rotation Angle: 90° ±2°
- Flow Characteristic: On/Off (fully open or closed)
- Interface Form: Hoop (flanged connection) for secure installation
- Installation Orientation: Horizontal or upright (versatile mounting)
- Compact & Adjustable Wiring:
- Dimensions: 123 × 70 × 76.5 mm
- Weight: 580g
- Wire length is adjustable for custom routing in tight spaces
- OEM-Grade Quality Certification:
Complies with TS16949 / ISO 9001, ensuring strict quality control, traceability, and compliance with global automotive manufacturing standards.
How It Works: Reliable Fluid Regulation Under Stress
The Valvola dell'acqua in ottone operates via an electric rotary actuator that rotates the internal ball or disc valve element by 90°, either opening or closing the flow path. When powered:
- Positive polarity → Opens the valve
- Negative polarity → Closes the valve
In 5-wire (Temp Feedback) mode, the actuator sends position data back to the HVAC control unit, enabling closed-loop control and fault detection (e.g., stuck valve, low torque).
The brass body prevents deformation under thermal cycling, while the waterproof actuator ensures consistent performance even in wet or dusty environments—such as construction sites or winter road conditions.
🔍 Real-World Application: In a 2023 field test by a Chinese bus manufacturer, brass valves reduced HVAC system failures by 68% compared to ABS models over a 12-month period, primarily due to improved resistance to corrosion and pressure surges.
Applications
This valve is widely used in:
- Heavy-Duty Trucks & Engineering Vehicles (cranes, excavators, dump trucks)
- Commercial Buses & Coaches (especially in cold climates)
- Refrigerated Trailers & Mobile Cold Rooms
- Mobile Heating Units (for construction sites, emergency shelters)
- Marine HVAC Systems (boats, ferries)
- Aftermarket Upgrades for older vehicle fleets needing higher durability
It is particularly effective in dual-climate systems, engine pre-heating circuits, and hybrid cooling loops where reliability under stress is non-negotiable.
Technical Specifications
| Parameter | Specification |
|---|---|
| Valve Body Material | Solid Brass (CuZn37) |
| Actuator Protection | IP67 Waterproof Shell |
| Alimentazione | DC 12V / DC 24V |
| Medio | Cold / Hot Water |
| Operating Temp | -5°C to +100°C |
| Ambient Temp | -30°C to +80°C |
| Storage Temp | -40°C to +85°C |
| Max Diameter | DN20 |
| Leakage Rate | <1 L/h (zero leakage at factory) |
| Flow Characteristic | On/Off |
| Rotation Angle | 90° ±2° |
| Interface Form | Hoop (flanged) |
| Installazione | Horizontal or upright |
| Dimensioni | 123 × 70 × 76.5 mm |
| Peso | 580g |
| Wire Length | Adjustable |
| Manutenzione | Maintenance-free |
| Certificazioni | TS16949 / ISO 9001 |
Why Choose Our Brass Water Valve?
Our Brass Water Valve sets the benchmark for durability, safety, and performance in demanding fluid control applications. Key advantages include:
- ✅ Corrosion-Resistant Brass Body: Lasts 3–5x longer than plastic valves in aggressive environments
- ✅ Waterproof Actuator: Prevents electrical failure in wet or dusty conditions
- ✅ Zero Leakage Guarantee: Factory-tested for <1 L/h leakage
- ✅ High-Temperature Tolerance: Safe for hot water up to 100°C
- ✅ Flexible Control Options: 2-, 3-, or 5-wire compatibility
- ✅ No Maintenance Required: Reduces labor costs and unplanned downtime
- ✅ Global Compliance: Meets ISO, TS16949, and AEC-Q100 standards
Whether you’re equipping a new fleet of construction vehicles or upgrading an aging bus HVAC system, our Brass Water Valve delivers unmatched reliability and long-term value.
Conclusion
The Valvola dell'acqua in ottone is more than just a flow control component—it’s a critical enabler of reliable thermal management in high-stress mobile environments. With its solid brass construction, waterproof actuator, and proven performance, it stands as the preferred choice for OEMs and fleet operators who demand maximum durability, zero leakage, and consistent operation.
From heavy-duty trucks to marine HVAC systems, this valve ensures that every drop of coolant or hot water flows exactly where it’s needed—when it’s needed.
Engineered for Toughness. Built for Longevity.
Upgrade Your System with the Most Durable Brass Water Valve on the Market.
