The Wavin OsmaS ABS AAV WT 110 4S304W is a high-quality air admittance valve for 110 mm soil and waste systems. Designed to prevent unpleasant odors and maintain proper airflow, it ensures reliable, leak-free performance while simplifying installation in residential and commercial plumbing systems.
The Wavin OsmaSoil 4S310G SW/S Vent Cowl Grey is a high-performance venting solution for 110mm soil stacks. Designed for push-fit installation, it prevents debris and rainwater ingress while allowing effective air circulation within soil systems.