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Air check valve assembly for powdered bulk product transport

  • US 4,445,533 A
  • Filed: 08/13/1981
  • Issued: 05/01/1984
  • Est. Priority Date: 08/13/1981
  • Status: Expired due to Fees
First Claim
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1. An air fluid check valve adapted for ready insertion therein and removal from the interior of a conduit assembly at a separable joint therein, the conduit assembly being adapted for use for instance on a bulk hauling transport vehicle for powdered solids, comprising a valve body having means thereon for locating the valve in generally centered condition in the interior of the conduit assembly at said joint, said body having an opening therethrough for the passage of fluid, a spring loaded valve plate pivotally mounted on said body and adapted to be urged in a direction to close said opening, but being pivotal to an open position upon application of predetermined fluid pressure in the conduit assembly to said valve plate, for permitting passage of fluid through said valve opening, resilient seal means adapted to coact in sealing relation with said valve body, for sealing the separable joint of the conduit assembly and for preventing leakage of fluid from interiorly of the conduit assembly externally of the valve, and wherein said seal means comprises a seal member adapted to encompass the conduit joint and to coact in sealing relation with said means on said valve body.

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