These hoses are very flexible allowing full flow. Abrasion & acid resistant available with or without wire reinforcement. Wire reinforcement type has coil of steel wire buried in hose to keep it from collapsing under full suction. Used in both suction & discharge hose. Flanged ends are drilled to bolt to companion flange using standard flat faced flanges. They provide a tight seal without a gasket since the flanges rotate freely. Alignment of bolt holes is easy, reusing installation time to minimum.