Many resilient seated butterflies will follow this bolting chart .
However, there is a LARGE variety in common bolting that are used on bufferfly valves. Please confirm your manufacture and model number– a help but not exhaustive list is provided below for a few common types.
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Please always check the thread pitch of your butterfly valve, particularly larger valves! Over 1″ bolts often require a UN8 thread pitch, which is unfamiliar to many people. Please contact us for help with your butterfly valves.
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ABZ Valve
Bray
Centerline
Dezurik
Flowseal
Keystone
Jamesbury
Milwaukee
Nibco
Pratt
Sureseal
Tri-Centric