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  • All Weldon Regulators maintain steady fuel delivery during dramatic changes in fuel demand, such as WOT conditions, boost application and gear changes with precision pressure control
  • .281" bypass orifice
  • Fluorosilicone diaphragm
  • Flows up to 6 GPM
  • 1/8" NPT Gauge Port
  • 1/8" NPT manifold pressure reference port
  • Fuel pressure increases on a 1:1 ratio with boost
  • Two -10 pressure ports / -8 return port
  • Billet Aircraft Aluminum with MIL-SPEC anodizing
  • For use with all Weldon pumps as well as pumps from other manufacturers


Compatible Fluids:

  • Gasoline
  • Methanol
  • Diesel
  • Ethanol
  • Most racing fuels



  • A2046-17 1/8" Sintered Bronze Breather
  • A2044-15 Replacement Diaphragm Assembly

A2040 Series Bypass Regulators

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