Boiler Water Flow Sensor Switch – Ariston Baxi Beretta 125-250V

Boiler Water Flow Sensor Switch – Ariston, Baxi Main Four & Beretta Compatible

Keep your home heating system running at peak efficiency with this precision-engineered Boiler Water Flow Sensor Switch. Designed specifically for Ariston, Baxi Main Four, and Beretta boilers, this brass-bodied sensor ensures accurate water flow detection and reliable switching performance — all in a straightforward plug-and-play design that makes installation simple.

Made in Mainland China.

Key Features

• Wide Voltage Compatibility: Rated for 125–250V operation, making it suitable for a broad range of boiler electrical configurations.
• Maximum Voltage Rating: Up to 250V maximum for safe and stable long-term performance.
• Accurate Flow Detection: Enables precise water flow monitoring to keep your boiler operating efficiently and consistently.
• Durable Brass Construction: Built from high-quality brass for excellent corrosion resistance and long service life in demanding heating environments.
• Easy Installation: Designed for straightforward fitting — no specialist tools required, making DIY boiler maintenance accessible.
• Boiler-Brand Specific Fit: Engineered to meet the specifications of Ariston, Baxi Main Four, and Beretta boiler systems for a reliable, compatible replacement.
• Black Finish: Sleek, functional aesthetic that blends naturally within your boiler housing.

Specifications

Package Contents

• 1× Boiler Water Flow Sensor Switch

Important Notes

• Actual color may vary slightly from product images due to monitor brightness and lighting conditions.
• Please allow for minor measurement deviations due to manual measurement.
• Always ensure the boiler is fully powered down and depressurised before installation. If in doubt, consult a qualified heating engineer.

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For guidance on safe boiler maintenance and home heating system safety, refer to the U.S. Consumer Product Safety Commission – Carbon Monoxide & Heating Safety Resources.

Learn more: Water metering

Frequently Asked Questions

Q: Which boiler models is this water flow sensor switch compatible with?

A: This boiler water flow sensor switch is specifically designed for use with Ariston, Baxi Main Four, and Beretta boilers. It operates at a rated voltage of 125–250V, making it suitable for a wide range of these boiler electrical systems. If you are unsure whether your specific model is compatible, please check your boiler's documentation or consult a qualified heating engineer before purchasing.

Q: Is this sensor switch easy to install myself?

A: Yes — this boiler water flow sensor switch is designed for straightforward installation. However, it is strongly recommended that you power down your boiler completely and release any system pressure before attempting installation. If you are not confident working with heating systems, please engage a qualified heating technician or plumber to carry out the replacement safely.

Q: What material is the boiler water flow sensor switch made from?

A: The sensor switch body is constructed from durable brass, which provides excellent resistance to corrosion and heat — ideal for the demanding conditions inside a residential or commercial heating boiler. Its black finish gives it a neat, unobtrusive appearance inside the boiler housing.

Q: What does this sensor switch actually do in a boiler system?

A: The water flow sensor switch monitors the movement of water within the boiler circuit. When it detects adequate water flow, it signals the boiler to operate normally. If flow drops below the required threshold, it can trigger a shutdown to protect the boiler from running dry or overheating — helping to maintain the overall efficiency and longevity of your heating system.