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The difference is the STANDARD FEATURES

  • High-strength steel construction
  • Stop rings to prevent plunger over travel
  • Solid bronze gland nuts for smoother operation
  • High cycle life Buna-N seals
  • High flow couplers
  • Collar threads are designed to carry full load
  • Burnished cylinders decrease friction
  • Precision ground, chrome-plated plungers
  • Solid bronze wear rings increase product life
  • Heavy-duty return springs provide consistent performance
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