P5500/P6500 Diaphragm type pressure gauge

P5500/P6500 Diaphragm type pressure gauge

The Ashcroft® P5500/P6500 stainless steel diaphragm pressure gauge has become an industry standard.

The Ashcroft® P5500/P6500 is a diaphragm style process pressure gauge designed for challenging low pressure processes with high overload protection. Utilizing a unique “dry cell” mechanism, it has no system fill fluid with may pose hazards in certain applications. Pressure connections include threaded and flange mounting options, ranges as low as 25 mbar and optional ATEX approvals.

Key Features

External zero adjustment (optional)

All-stainless steel movement

Rugged stainless steel construction

Overpressure protection up to 10 times full scale (optional)

Selection of wetted materials

Electrical contacts (optional)

Markets & Applications

Hydrogen and Technical Gases


Pumps and Compressors

Vacuum Pumps

Chemical and Petrochemical


Gas Measurement; Burners

Food and Beverage

Oil and Gas

Machine Automation

Leak Detection

  • Specifications
  • Downloads

Wetted Parts Material

Stainless steel 316L (1.4404)

PTFE coated

PFA coated

Hastelloy C

Ingress Protection

IP66 / NEMA 4X

Process Connection Style

Flange according to ASME B16.5

Flange according to EN 1092-1


Case or Body Material

Stainless steel 316L (1.4404)

Case Style

Open front case with blow out (S1)

Solid front with full rear blowout back (S3)

Dial Size

100 mm

160 mm

Process Connection Location


Switch Style

Magnetic spring contacts

Inductive NAMUR contacts


1.6% of span (class 1.6)



Pressure Type

Gauge pressure


Liquid fill

Throttle screw


16 mbar ... 600 mbar



1 ... 25 bar / 375 psi

Data Sheets
Installation + Maintenance
Declaration of Conformity
Industry Brochures
Product + Technical Information
Drawings + Models
Safety Data Sheets

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