Importance

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Abstract

An improved high pressure fluid delivery system has a hollow fluid delivery shaft connected at its discharge end to a spray delivery assembly and rotationally driven relative to a hollow housing which internally supports the shaft. The discharge end of a high pressure fluid inlet adapter fitting and the inlet end of the shaft are sealingly interconnected within a seal cartridge removably carried by the housing in a readily accessible location, the inlet fitting and the seal cartridge being clamped to the housing by a cap member threaded onto the housing. High pressure fluid leakage past the seal cartridge into the housing is vented in a manner preventing significant internal fluid pressurization of the housing, thereby permitting it to be formed from a relatively lightweight material such as aluminum. High pressure fluid leakage past the seal cartridge toward the cap member is vented outwardly through a plurality of vent openings formed in the cap member.

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First Claim