The wafer style butterfly valve is designed to maintain a seal against bi-directional pressure differential to prevent any backflow in systems designed for unidirectional flow. It accomplishes this with a tightly fitting seal; i.e., gasket, o-ring, precision machined, and a flat valve face on the upstream and downstream sides of the valve.

Specification

Type: WBUT-VLV-JIS40 JIS

Basic Standard

Design and Manufacture: KS B 2813
Face To Face: KS B 2306
Flange End: KS B 1511
Inspection: KS B 2304