Clean check extendable backwater valves prevent sewage backup into a residence or building as a result of a plugged sewer system, excess volume in the system or groundwater flooding. They are designed to be installed easily outside a home, business or other structure, without using a costly manhole, and are readily accessible for maintenance or cleaning.

• No manhole required
• Installs discretely outside - up to 12 ft below ground level
• Above ground outdoor maintenance accessibility eliminates hidden access indoor applications and the sewer odor and mess of indoor maintenance
• The extendable valves consist of a tee shaped valve body, a top collar and a bottom collar with a replaceable PVC flapper attached
• In the event of back pressure, the flapper blocks the reverse flow and prevents a sewage backup

Standards/Certifications: CSA certified, ICC compliant, IPC certified, IRC listed, UPC/IAPMO listed

Applications: For preventing sewage backup into plumbed structures as a result of a plugged sewer system, excess volume in the system or groundwater flooding

• Catalog https://www.plumbers-supply-co.com//ASSETS/DOCUMENTS/ITEMS/EN/UNI-PS22760_Cat.pdf