Caleffi 6 Bar Prv Circlip Conn F0000412 Alternative

Caleffi 6 Bar Prv Circlip Conn F0000412 Alternative

Caleffi 6 Bar PRV with Circlip Connection – F0000412 Alternative

Product Summary

The Caleffi 6 Bar Pressure Relief Valve (PRV) with Circlip Connection is a high-performance safety valve designed to protect pressurised heating and hot water systems from overpressure damage. As an alternative to Caleffi part number F0000412, this valve delivers the same level of dependable pressure relief performance and is ideal for use in sealed heating circuits, thermal stores, and unvented systems where a 6 bar pressure rating is required.

Whether you're performing a system upgrade or replacing a failed component, this circlip-type PRV offers quick installation, secure fitment, and long-term durability.

Key Features

• 6 bar pressure rating – suitable for high-pressure heating and hot water systems

• Direct replacement for Caleffi F0000412 – ensures full compatibility and reliable operation

• Circlip connection design – quick, tool-free installation with secure sealing

• Robust brass body – resists corrosion and thermal stress

• Factory-calibrated for precise relief control

• Suitable for both horizontal and vertical mounting orientations

• Compatible with many OEM and aftermarket sealed system configurations

Compatible Systems & Models

Commonly used in or compatible with:

• Sealed heating circuits with higher pressure requirements

• Unvented hot water cylinders and thermal stores

• High-pressure commercial heating systems

• OEM system kits where F0000412 or equivalent is specified

Please check your boiler or cylinder technical documents to confirm part compatibility.

When to Replace

• Continuous or intermittent leaking from PRV outlet

• System pressure rising above safety threshold (6 bar) without relief

• During scheduled system servicing or pressure component upgrade

• Fault diagnosis indicating worn or stuck PRV

• When replacing expansion vessels or other safety valves

Technical Specifications

• Manufacturer: Caleffi (alternative part)

• Original Reference: F0000412

• Pressure Rating: 6 bar

• Connection Type: Circlip

• Body Material: Brass

• Mounting: Horizontal or vertical

• Application: Domestic and commercial heating & hot water systems