Description: The Gruvlok Series 8700 is a grooved-end butterfly valve designed for commercial piping systems ranging from 2" to 8". The patent-pending valve features an off-set disc and ergonomic ...

A "fragile" Gretchen Walsh shook off a stomach bug to power to a dominant victory in the 100m butterfly final at the world championships in Singapore on Monday.

Gretchen Walsh defied illness in the United States camp to power to a dominant victory in the 100m butterfly final at the world championships in Singapore on Monday.

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