protection

Product catalog summary

Overview: The document focuses on the protection of drinking water networks, addressing the risks of backflow and the systems designed to prevent it. Backflow, which can lead to contamination, occurs when the usual flow direction is reversed, drawing potentially polluted water into the system. The document emphasizes the importance of selecting appropriate protection systems based on the danger level of fluids involved and highlights European standards, particularly EN1717, which govern these choices.

Key Sections:

Backflow Risks: Backflow can occur due to siphoning or overpressure, posing a pollution risk to drinking water networks. The complexity of interconnected pipeline networks increases this risk.
Protection Systems: Various systems and devices are available to prevent backflow, including backflow preventers with controllable reduced pressure zones, disconnector valves, and check valves. The choice of system depends on the level of risk and the type of fluids involved.
EN1717 Standard: This standard provides guidelines for protecting drinking water against pollution in indoor distribution systems and outlines requirements for protective devices.
Backflow Preventers: Detailed descriptions of different types of backflow preventers, such as BA backflow preventers, are provided. These devices interrupt the water supply to prevent contamination and are equipped with safety mechanisms to handle pressure changes.
Installation and Maintenance: Proper installation and regular maintenance are crucial for the effectiveness of backflow preventers. The document provides technical information and installation advice for specific models like BA 2760 and BA 4760.
Accessories and Maintenance Kits: Accessories such as filters and valves are essential for the operation of backflow preventers. Maintenance kits are available to ensure annual performance checks, as required by antipollution standards.

Conclusion: Protecting drinking water networks from backflow is critical to maintaining water quality. The document outlines the necessary systems, standards, and maintenance practices to ensure effective protection against pollution.

Technical Specifications and Operational Details:

All-Electronic Control Unit: Designed for backflow preventers with diameters ranging from 15 to 250 mm, featuring a shockproof case, manual, calibration certificate, and maintenance procedure.
Contractual Replacement: Annual maintenance is recommended and provided free under the C.R.AN. contract, ensuring devices are verified by qualified personnel.
Disconnecteur BA 2760: Features a controllable reduced pressure zone, compact design, and high performance with a maximum working temperature of 65°C and pressure of 10 bar.
Functioning Principles: Normal operation allows water flow through open check valves, with discharge valves opening to release air in case of pressure loss to prevent backflow.
Technical Information: Devices protect installations from low or intermittent risk backflow, with special versions available for different connection types and materials.
EA Check Valves: Designed to protect drinking water systems from contamination, requiring installation with isolation means upstream and control means for sampling.
System 01 EA Check Valves: Space-saving design with brass casing and polyacetal components, with a maximum working temperature of 80°C and pressure of 10 bar.
Installation Advice: Install a stopcock upstream of check valves and ensure the area around the device is clear for maintenance and checks.
Maintenance and Testing: Valves must satisfy watertightness and opening pressure checks after testing cycles, with regular maintenance ensuring optimal performance and compliance with standards.

Technical Document Summary:

Specifications: Details various types of check valves, including EA, EB, and double check valves (EC & ED), with materials like ductile iron, bronze, stainless steel, and brass.
Procedures and Functions: Check valves function in any position with minimal energy loss and excellent watertightness, preventing water hammering and featuring inspection covers for easy maintenance.
Standards and Approvals: Products are approved by various European institutes, ensuring compliance with local sanitary regulations, with an emphasis on consulting local authorities for installation compliance.
Recommendations: Suggests using these valves for protection against contamination in drinking water systems, highlighting the importance of selecting appropriate products based on local sanitary regulations.
Key Data from Tables: Provides detailed dimensions, weights, and flow rates (KV) for different valve models, with specific references for each valve type indicating their size and material composition.
Contact Information: Danfoss Socla, located in Virey-le-Grand, France, provides contact details for further inquiries.

All SOCLA catalogs and technical brochures

Archived catalogs

Regulation
28 Pages
ON/off
2 Pages
Non return
28 Pages