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Graco Hydra-Cat Proportioning System

Accurately proportion plural-component materials

Fixed Ratio Hydra-Cat proportioners accurately pump plural-component materials by powering two or three positive displacement pumps from a common air motor. This assures that the stroke rate and stroke length of all pump lowers are identical, providing constant proportioning. Models with two identically-sized lowers provide balanced pumping forces which prevents premature packing wear. Models with three pump lowers and cylinders of various sizes can be selected to provide a wide variety of mix ratios.

Features and Benefits

  • Severe Duty lowers for wear-resistance and durability
  • Multiple pump lower configurations achieve a wide variety of mix ratios
  • Two-pump lower offers a consistent 1:1 mix ratio
  • Three-pump lower provides mix ratios above 1:1 for balanced pumping
  • Teflon packings are standard on Hydra-Cat lowers

Key Applications

  • Farm and construction equipment
  • Truck and bus
  • General metal fabrication
  • Foam and elastomerics
  • Sealants and adhesives

Key Materials

  • Epoxies
  • Polyurethanes
  • Waterbornes
  • Acid-catalyzed wood finishing materials
  • Stains, lacquers and varnishes