The McAlpine White Screened Tank Breather ¾” – R31 provides a highly effective ventilation solution for domestic cold water storage tanks. Specifically, it offers a secure and reliable method to allow the water to breathe while protecting your water system from contamination.
Therefore, the McAlpine R31 suits plumbing modifications and installation projects that require safe water storage ventilation. Additionally, it acts as a screened breather specifically designed to fit into the lid of these installations and features a ¾” threaded male connection with a backnut, which simplifies installation and ensures a secure joint.
The R31 forms part of McAlpine’s trusted range of water storage cistern and overflow fittings. As a result, it delivers dependable, WRAS-approved operation across a wide variety of domestic plumbing applications and fits ¾” tank systems specifically.
Key Features & Benefits of McAlpine White Screened Tank Breather ¾” – R31:
Screened Protection: The fitting is designed with an internal screen to prevent bugs and insects from entering the water tank. Consequently, it provides a convenient and cost-effective plumbing solution when you need to protect against external contamination entering the water system.
WRAS Approved: Meets strict regulatory standards, ensuring it is safe and compliant for use with domestic cold water storage tanks.
Simple Integration: Functions as a dedicated tank lid breather, allowing you to ventilate cistern systems efficiently without needing complex modifications.
Secure Connections: Incorporates a ¾” threaded male connection complete with a backnut. Therefore, it contributes to a secure mechanical joint and fits securely into standard tank lids.
Trusted McAlpine Quality: McAlpine manufactures this component, ensuring dependable performance and high manufacturing standards.
Technical Specifications:
Product Type: Screened Tank Breather
Model: R31
Application: Cold water storage tank ventilation and insect protection
Connection: ¾” Threaded Male (BSP)
Manufacturer: McAlpine







