Backflow preventer valve class EA. With supervision option. Connections with internal thread 1 ¼" 304570

The Caleffi EA class backflow preventer is a reliable protection for water installations against contamination. Designed for use in potable water systems, it protects against backflow, preventing potential network pollution. Its brass construction guarantees durability and corrosion resistance, making it an ideal choice for both professional installers and end-users.

This valve has internal thread connections with a diameter of 1 1/4 inch (32 mm), which facilitates installation in existing systems. The pressure class PN 10 ensures safe operation under typical conditions. Using a backflow preventer is not only meeting legal requirements, but above all, caring for the health and safety of users.

Construction and application

The EA class check valve with supervision option is designed to protect the water installation from backflow of contaminated water. Made of brass, it has an internal parallel gas thread (BSPP) with a diameter of 1 1/4 inch. Therefore, it finds application in residential, commercial and industrial buildings where protection against contamination of drinking water is required. Its construction based on a stainless steel spring and EPDM and NBR seals guarantees reliable operation even under variable pressure conditions. The valve meets the EN 13959 standard, confirming its compliance with European safety standards.

Advantages and benefits

• Protection against contamination: Prevents contaminated water from flowing back into the water supply network, protecting user health.
• Durability and reliability: Made of high-quality brass and equipped with stainless steel elements and EPDM/NBR seals, it ensures long-lasting and trouble-free operation.
• Easy installation: Internal thread connections facilitate integration with existing installations.
• Compliance with standards: Meets the requirements of EN 13959 standard, guaranteeing safety of use.
• Supervision option: Allows control of the valve's condition and proper operation.
• Versatility: Suitable for use in various types of water installations – from domestic to industrial.
• Pressure resistance: Pressure class PN 10 ensures safe operation under standard conditions (maximum working pressure: 10 bar).