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"Expect many enjoyable experiences!" David M. Armstrong
Did you know: Armstrong owns, operates and maintains 17 utility plants for Fortune 500 energy users.
Fixed Pivot Ball Float Air/Gas Vents
Armstrong offers fixed pivot air vents in both a small, high-quality economical design and a forged steel version with larger float and higher leverage. They use a single lever with a fixed pivot and viton seat, ensuring tight shutoff.
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