Check valve FERRO ZZM6 with brass closing element 2" — backflow valve

FERRO ZZM6 is a 2" check valve with a brass closing element designed to prevent backflow in plumbing, heating and pump systems. Intended for inline installation, the valve provides one-way fluid flow control to protect pumps, boilers and downstream equipment from reverse flow. The brass closing element offers reliable sealing and corrosion resistance in typical water supply and central heating applications.

Advantages

The FERRO ZZM6 combines a durable brass internal closing element with a compact 2" body to deliver reliable non-return performance. Its construction minimises leakage and wear under normal operating conditions, while the brass component improves sealing consistency and reduces the risk of corrosion compared with some other closing materials. The inline design simplifies installation in straight pipe runs and supports compatibility with common plumbing systems.

Suitable for

• Hot and cold water supply lines
• Central heating systems and boiler protection
• Pump discharge lines to prevent reverse flow
• Domestic and light commercial plumbing installations

Key specifications

• Nominal size: DN 50 (2 inches)
• Closing element material: brass
• Function: non-return (check) valve for one-way flow
• Installation type: inline, horizontal or vertical orientations as allowed by system design
• Application media: potable water and heating water (typical fluids for plumbing and heating systems)

How to use

Install the FERRO ZZM6 in the pipeline with the flow arrow pointing in the direction of desired fluid movement. Ensure pipe ends are clean and properly prepared for the selected joining method. Tighten connections to the recommended torque to avoid distortion of the valve body or sealing surfaces. Verify correct orientation and support adjacent piping to prevent stress on the valve. After installation, pressurise the system and check for leaks around connections; cycle the system if necessary to confirm one-way operation.

Usage recommendations

Use in water-based systems only and avoid exposure to aggressive chemicals or media not compatible with brass. For best performance, follow local plumbing codes and manufacturer guidance for pressure and temperature limits. Periodically inspect for signs of wear, scaling or leakage and service or replace the valve if sealing becomes compromised.