Attwood Scupper Valve alt-bmd30781 This is a non-locking black

This is a non-locking black plastic cap designed to fit Seachoice 32011 and Perko 1313 and 1314 series deck mount fill plates

Convenient tie downs keep booms in place

heavy-duty PVC bladder

The arm has a socket at both ends that accommodates ball bases

Attwood Scupper Valve alt-bmd30781 This is a non-locking blackMounts on transom slightly above water line to provide a water exit for boats with self bailing cockpits. Flapper valve opens outward to allow water out of boat when necessary but seals back to prevent water from entering. Acetal construction. Accommodates 3875B thru transom thru hull connector (screw holes must be drilled for installation). Use as a replacement valve for 3881 thru transom scupper. Caution: Thru hull connectors are designed for