4. Pipes and tubular conduits
  5. With pressure compensators
  6. Variable capacity chambers

Essef Corporation

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Air relief valve for a pressure vessel

Gas separation: apparatus – Degasifying means for liquid – With control means responsive to sensed condition
Patent

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Antiseal arrangement for hydropneumatic pressure tanks

Pipes and tubular conduits – With pressure compensators – Variable capacity chambers
Patent

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Apparatus for changing vertical-axis extrusion dies

Plastic article or earthenware shaping or treating: apparatus – With apparatus assembly or dismantling means or with idle part – Including support or guide means for disassembled element
Patent

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Apparatus for rotationally casting a plastic tank liner having a

Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – Opposed registering coacting female molds
Patent

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Auxiliary flow path valve

Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
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