Starting at $2,189.05
  • Usually ships in 6-8 weeks



  • Stainless steel case
  • Inches of water differential ranges
  • Static pressure for ranges 160IW & lower – 145 psi above 160IW – 360 psi
  • External zero adjust
  • Available with open or solid front case styles
  • Optional liquid-filled case
  • 4in (100mm) or 6in (160mm) dial sizes


The Ashcroft F5509 / F6509 Differential Pressure Gauge are used for monitoring differential pressure between two separate pressure sources. Designed for harsh environments, these models provide high reliability and safety. A perfect solution for challenging application and installation requirements.