4. Valves and valve actuation
  5. Tube compressors

Red Valve Co. Inc.

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Air diffuser valve

Fluid handling – Line condition change responsive valves – Direct response valves
Patent

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Asymmetrical check valve

Fluid handling – Line condition change responsive valves – Direct response valves
Patent

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Check valve with oversized bill

Fluid handling – Line condition change responsive valves – Direct response valves
Reexamination Certificate

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Deformable sleeve for a pinch valve

Valves and valve actuation – Tube compressors
Patent

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Diffused aeration method

Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate

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