McAlpine R28-NRV Overflow Non-Return Valve | 19mm – 23mm One Way Check Valve

McAlpine R28-NRV Overflow Non-Return Valve | 19mm – 23mm One Way Check Valve

Features

The McAlpine R28-NRV Overflow Non-Return Valve provides a vital safety solution for preventing unwanted backflow in your drainage system. This high-quality check valve features a sensitive internal flap that allows water to exit while blocking air, foul smells, or back-surges from entering. Because it uses a universal compression connection, it securely fits all overflow and condensate pipes between 19mm and 23mm (3/4″). This fitting is particularly effective for boiler condensate lines and cistern overflows where preventing cross-contamination or “blow-back” is essential. Consequently, you achieve a professional, compliant installation that protects your property from damp and odours.

• Reliable one-way check valve prevents backflow and stops foul odours
• Universal compression fitting adjusts to fit 19mm, 21.5mm, and 23mm pipework
• Essential for boiler condensate, air conditioning, and cistern overflow systems
• Compact R28-NRV design allows for easy installation in tight or awkward spaces
• Trusted McAlpine construction ensures long-term durability and chemical resistance

Technical

• Brand: McAlpine
• Model Code: R28-NRV
• Size Compatibility: 19mm – 23mm (3/4″)
• Type: Non-Return Valve (NRV) / Check Valve
• Connection Type: Universal Compression
• Material: High-Grade Polypropylene
• Colour: White
• Application: Condensate Lines, Overflows, and Waste Discharge

Details

Many standard overflow systems allow cold air or foul smells to travel back up the pipework into your home, and this often creates an unpleasant and unhygienic environment. Additionally, heavy rain or blockages in the main drain can cause water to surge back through the overflow, which leads to potential flooding. This McAlpine R28-NRV Valve solves these issues because the integrated non-return flap creates a physical barrier against backflow. Moreover, the universal compression seal ensures a watertight fit on various pipe sizes without the need for messy glue. Therefore, you protect your living space from back-draughts and water damage while you maintain a high-performance drainage system.

Brand:

• McAlpine

MPN:

• R28-NRV