AV-WP-KA Sewage Air Release Valves Home » Products » AV-WP-KA Sewage Air Release Valves The AV-WP-KA valve has been designed for efficient discharge and intake of air from pressurized sewage systems where confined air (gases) could impair the system’s operation. Specification Sheet Catalog Catalog List Pricing Current Catalog: BEECO-2019 Downloads Downloads 2020 BEECO Cross Reference Chart AV-WP-KA Brochure Return to Products