Prv & Monobloc Manifold Assembly

Prv & Monobloc Manifold Assembly

PRV & Monobloc Manifold Assembly – Complete Safety Control Unit for Sealed Heating Systems

Product Summary

The PRV & Monobloc Manifold Assembly is a vital safety and control component used in sealed system boilers and unvented heating applications. This factory-assembled unit typically combines a Pressure Relief Valve (PRV) and essential isolation controls into a single manifold, helping regulate system pressure and maintain safe operation. It's ideal for both new installations and direct replacements, making it a go-to solution for heating engineers and experienced DIY users.

Whether you're repairing a leaking valve, addressing pressure irregularities, or carrying out routine maintenance, this assembly saves time and ensures reliability with a clean, consolidated design.

Key Features

• Integrated PRV and monobloc manifold – compact all-in-one safety control

• Simplifies installation – reduces pipework complexity

• 3 bar PRV included – protects sealed systems from overpressure

• Designed for direct replacement or new boiler setups

• Rugged construction for long-lasting reliability

• Includes seals and connections for quick, leak-free fitting

• Trusted by installers for fast servicing and fault resolution

Compatible Boiler Models

This PRV & Monobloc Manifold Assembly is commonly used in a variety of combi and system boilers, particularly those from leading brands such as:

• Worcester Bosch

• Ideal

• Vaillant

• Baxi

• Glow-worm

Always check your boiler model or consult your boiler manual to ensure compatibility.

When to Replace

• Visible leaks or signs of corrosion around the PRV or manifold

• Loss of system pressure or unexpected discharges from the PRV

• During annual servicing as a preventative maintenance measure

• After system over-pressurisation or replacement of the expansion vessel

Technical Specifications

• Pressure Relief Valve Rating: 3 bar (standard for domestic systems)

• Connection Type: Compression fittings (usually 15mm/22mm – check spec)

• Material: Brass manifold body with polymer and rubber seals

• Application: Sealed system heating / combi boiler circuits

• Function: Pressure control and system isolation