Non-return valve with anti-pollution protection class EA, 1 inch, female thread RV284-1A

Non-return valve with pollution prevention – installation protection and user safety

This non-return valve with pollution prevention, with a diameter of 1 inch and an internal threaded connection (GZ), is a key element protecting the water installation from backflow. Designed for direct mounting behind the water meter, it effectively protects both the supply installation and the water supply network from potential contamination. Its construction based on dezincification-resistant brass (DZR) guarantees durability and reliable operation for a long time.

Construction and practical application

The RV284-1A valve meets the requirements of EN 1717 standard, making it an ideal solution for protecting drinking water installations in places exposed to contact with fluids of category 2. It can be used in both industrial, commercial installations, and in residential buildings. Thanks to the possibility of horizontal mounting and low pressure losses, it provides ease of use and minimal impact on system performance. Kvs values are 4.1, 8.8 and 16.5 for different connection diameters, respectively.

Key features and benefits

• Backflow prevention: Prevents water from flowing back from the installation into the water supply network, protecting it from contamination.
• Durability and reliability: Made of dezincification-resistant brass (DZR), which ensures long-term operation even in difficult conditions.
• Compliance with standards: Meets the requirements of EN 1717 standard, guaranteeing safety and effectiveness.
• Easy installation: Simple construction facilitates installation and servicing.
• Low pressure loss: Minimal impact on system performance thanks to the optimal flow design.
• DVGW approvals: Confirm the high quality and safety of the valve insert.
• Wide application: Ideal for industrial, commercial and residential installations.
• Net weight: 0.2 kg - lightweight and easy to handle during installation.
• Connection length: 68 mm - compact dimensions allow installation even in limited space.
• Maximum working pressure: 25 bar - ensures safe operation in most standard water installations.

This valve is particularly recommended for use directly behind the water meter, where it acts as an effective protective barrier against potential hazards related to water backflow. Regular effectiveness tests (recommended every 12 months) ensure its reliable operation throughout its service life.