The main structural features of 815 and 830 series American Standard butterfly valves are clamped and flanged triple eccentric structure, while the main structural features of 815 and 830L series butterfly valves are lugs around the valve body and single flange structure with screw holes. 815 and 830 series butterfly valves are widely used in petroleum, chemical industry and industrial environmental protection, water treatment, high-rise buildings, water supply and drainage pipelines. Its characteristics are: due to the use of three eccentric structure, reliable sealing performance, to ensure that the butterfly plate does not touch the sealing seat when opening, eliminating the uneven load on the sealing seat, prolonging the service life, to ensure reliable sealing performance, high temperature resistance, wear resistance, corrosion resistance and other advantages.

Adopted standard

Design standard: API609-83

Flange connection size: ANSI B16.5

Structure length: ANSI B16.10-1992

Pressure test: API598-82