What is Cast Iron Wafer Butterfly Shutoff? A wafer design butterfly valve is developed to make the complete elimination of a control valve from a pipe simple, without impacting the honesty of the line. In the 'wafer' version, the value is pushed between or attached with flanges (what's good https://rylanpllpe.blogdon.net/understanding-the-perks-applications-industrial-piping-systems-sturdy-economical-circulation-control-option-shutoffs-for-cast-iron-wafer-butterfly-valve-53565780