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Butterfly Check

Shown here is the top-down view of a butterfly check valve which recently passed Irvine Ranch Water District (IRWD) Inspection and is now ready to install at the construction site of a new residential tract of homes. Note that the...

Butterfly Valve

This is a side angle view of a butterfly check valve. The metal disc which is held by the rod is called the butterfly (because it looks like a butterfly; the metal discs are like wings). Unlike a ball valve...