The 869-6P from Sioux Chief is a 6” PVC Backwater Valve. 

Features:

• Threaded top valve cover seals hand-tight and provides easy access for maintenance, inspection and repair;
• Molded flapper seals better than O-ring and can be removed for cleaning or replacement without removing the entire valve;
• Notches on the valve prevent wrong re-installion of the carrier and flapper;
• Valve is intended for standard (non-bury) installations. For shallow-depth bury, see part# 869-S3PS;
• For shallow or deep-bury applications, use 10" SCH40 pipe to make an extension;
• For GRAVITY FLOW applications only;
• UPC listed;
• Design in accordance to ASME A112.14.1-2003;
• Made in the USA.

Technical Specifications:

• Connection: 6" SCH40 Hub (Solvent Weld PVC);
• Backflow pressure: up to 10 psi;
• Valve height: 9-3/4";
• Valve width: 15-3/8";
• Valve material: PVC;
• Flapper material: Elastomer overmolded polypropylene;
• Valve lid material: Impact resistant HDPE.