McAlpine TUNVALVE FOR CISTERN WITH S/OF

McAlpine Tunvalve Straight-Through Non-Return Valve (19/23 mm)

Product Description

The McAlpine Tunvalve is a straight-through non-return valve designed to prevent backflow and foul odors within plumbing systems. It accommodates boiler or air-conditioning condensate, cold-water cistern discharge, or overflow flows by channeling liquid into waste pipes without allowing reverse air or odors to return into premises.

Key Features

• Connection Size: Universal 19 / 23 mm push-fit connectors – compatible with most standard waste or soil pipes

• Valve Type: Non-return (one-way) valve that allows condensate to flow through while blocking backflow

• Material: Transparent polypropylene body allows visual inspection, with an integrated O-ring seal for leak protection

• Installation Orientation: Designed for vertical installation only and must be placed in a visible position for maintenance

Advantages

• Protects Against Odors: Efficiently prevents foul air from entering building via waste pipework

• Visible Inspection: Clear body lets users confirm proper valve operation and locate blockages easily

• Quick & Tool-Free Fit: Push-fit connectors provide secure fitting without adhesive or threaded joints

• Durable Construction: Corrosion-resistant polypropylene ensures long-term performance in moist environments

Recommended Applications

• Condensate Discharge: Ideal for boiler or AC unit condensate into soil or waste pipe systems

• Cistern or Tank Overflow: Suitable for overflow protection where backflow prevention is needed

• Domestic & Light Commercial Use: Applicable in houses, apartments, offices, or retail buildings

Summary

The McAlpine Tunvalve combines effective one-way protection, simple installation, and inspection capability in a compact, clear-bodied valve. Perfect for ensuring safe, odor-free condensate or overflow drainage in both residential and commercial plumbing setups.