Ashcroft F5509 / F6509 Differential Pressure Gauge

316L Stainless steel case and wetted parts, ±1.6% accuracy, high static pressure limits.

Starting at $2,243.78

Effective April 28th, 2025 Ashcroft has added a 7% surcharge to this product. The surcharge will appear as a separate line item on the order.


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  • Usually ships in 6-8 weeks
Product Manual Product Specs

Features

  • 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.

Ashcroft Type 330 Diaphragm Seal
Ashcroft Type 330 Diaphragm Seal

All welded flush mini diaphragm seal, metal construction prevents process media leakage, 1in process connection, 316L SS material.

Starting at $207.40
Ashcroft Type 311 / 312 Diaphragm Seal
Ashcroft Type 311 / 312 Diaphragm Seal

All-welded "midi" diaphragm seal with metal construction prevents process media leakage with 316L stainless top housing.

Starting at $284.20
Ashcroft Type 320 Diaphragm Seal
Ashcroft Type 320 Diaphragm Seal

Quick connect 316L stainless steel diaphragm welded to a 316L stainless steel top housing, fill/bleed connection.

Starting at $271.40
Ashcroft Type 100 Series Diaphragm Seals
Ashcroft Type 100 Series Diaphragm Seals

Threaded capsule diaphragm seal, the top housing & diaphragm capsule are interchangeable with all Ashcroft bottom housings.

Starting at $599.86
Ashcroft Type 310/315 Diaphragm Seals
Ashcroft Type 310/315 Diaphragm Seals

All-welded mini diaphragm seals for protecting transducers or gauges 3.5in or smaller from corrosion, plugging & freeze-up.

Starting at $109.81
Ashcroft Type 200 Series Diaphragm Seals
Ashcroft Type 200 Series Diaphragm Seals

Process connection ranging from 1/4 to 8in, fill/bleed connection is standard, includes removable top housing.

Starting at $460.47
Ashcroft Type 700 Series Diaphragm Seals
Ashcroft Type 700 Series Diaphragm Seals

For pressure instruments ranging from 30 inches H2O to 750 psi with large displacement actuators.

Starting at $628.29
Ashcroft Type 510 / 511 Diaphragm Seals
Ashcroft Type 510 / 511 Diaphragm Seals

All welded compact design with 316L SS housing material, adds 1/2 accuracy to the instrument it's attached to.

Starting at $407.82
Ashcroft Type 300 Series Diaphragm Seal
Ashcroft Type 300 Series Diaphragm Seal

Clamped diaphragm seals with an elastomeric or Teflon diaphragm between top & bottom housing with clamp rings.

Starting at $566.28
Ashcroft V01 Gauge Valve
Ashcroft V01 Gauge Valve

Isolates process from instrument assembly, 316L stainless steel construction, 6,000 psi max pressure.

Starting at $121.30
Ashcroft V01 Block and Bleed 2-Valve Manifold
Ashcroft V01 Block and Bleed 2-Valve Manifold

Isolates and bleeds the process from instrument assembly, 316L stainless steel construction.

Starting at $159.61
Ashcroft V02 Block and Bleed 2-Valve Manifold
Ashcroft V02 Block and Bleed 2-Valve Manifold

Isolates and bleeds the process from instrument assembly, 316L stainless steel construction.

Starting at $254.11
Ashcroft V01 3 Valve Manifold
Ashcroft V01 3 Valve Manifold

Isolates each port and equalize pressure for instrument maintenance, 316L stainless steel construction.

Starting at $223.46
Ashcroft V01 5 Valve Manifold
Ashcroft V01 5 Valve Manifold

Isolate and bleed the process for each port as well as equalize pressure for instrument maintenance.

Starting at $319.24
Ashcroft V02 Direct & Remote Mount Three-Valve Manifolds
Ashcroft V02 Direct & Remote Mount Three-Valve Manifolds

Isolates each port and equalizes pressure for instrument maintenance, 316L stainless steel construction.

Starting at $332.01
Ashcroft V03 3 Valve Manifold
Ashcroft V03 3 Valve Manifold

3-valve manifolds isolate each port and equalize pressure for instrument maintenance.

Starting at $230.80
Ashcroft V02 Direct & Remote Mount 5 Valve Manifold
Ashcroft V02 Direct & Remote Mount 5 Valve Manifold

5-valve manifolds isolate and bleed the process for each port as well as equalize pressure for instrument maintenance.

Starting at $619.24
Ashcroft 2198 MicroTube Siphon
Ashcroft 2198 MicroTube Siphon

Protection for pressure instruments from elevated temperatures, 800°F max temperature, 5000 psi max pressure.

Starting at $307.89
Ashcroft 1198 Finned Siphon
Ashcroft 1198 Finned Siphon

Protection for pressure instruments from elevated temperatures, 700°F max temperature, 3000 psi max pressure.

Starting at $356.18
Ashcroft V02 Low Pressure Ball Valve
Ashcroft V02 Low Pressure Ball Valve

Floating ball design provides bi-directional isolation, anti-blowout stem design, 1000 psi max pressure rating.

Starting at $57.45
Ashcroft V02 High Pressure Ball Valve
Ashcroft V02 High Pressure Ball Valve

Floating ball design provides bi-directional isolation, anti-blowout stem design, 6092 psi max pressure.

Starting at $395.84