Sioux Chief ProCheck 4 in. D X 4 in. D Slip Plastic Swing Valve VEL-B It has a locknut with

It has a locknut with an elastomer no caulk gasket

PERMATABS is a trademark of C & H Enterprises

Swedged sides for strength

minus the rust and tiny splinters

Trusted by generations for its famous streak free shine

Sioux Chief ProCheck 4 in. D X 4 in. D Slip Plastic Swing Valve VEL-B It has a locknut withThis 4 inch ABS Hub x Hub Backwater Valve provides unrestricted flow and a threaded access that seals hand tight and allows for easy maintenance and inspection. Used to prevent backup in sewer lines. Hub x hub connection type. UPC: 739236313713 Manufacturer Part No: 869 S4APK Brand Name: Sioux Chief Sub Brand: ProCheck Inlet Diameter: 4 in. Outlet Diameter: 4 in. Material: Plastic Valve Type: Swing Product Type: Valve Mounting Orientation: Horizontal