40mm Pressure Gauges

40mm pressure gauges provide compact local pressure indication for industrial equipment where space is limited. This small dial format is commonly used on pneumatic systems, hydraulic units, compressors, control panels, test rigs and OEM machinery requiring routine pressure measurement close to the point of use.

Choose from suitable industrial pressure gauges for replacement gauges, maintenance stock or new equipment builds. When selecting a gauge, check the pressure range, process connection, mounting style and media compatibility, and consider glycerine filled options where vibration or pressure pulsation may affect readability.

8 products

40mm Back Entry All Stainless Steel Pressure Gauge

From £57.00

40mm Back Entry Industrial Pressure Gauge

From £46.20

40mm Back Entry Glycerine Filled Pressure Gauge

From £51.45

40mm Bottom Entry Industrial Pressure Gauge

From £42.00

40mm Bottom Entry Glycerine Filled Pressure Gauge

From £39.95

40mm Bottom Entry All Stainless Steel Pressure Gauge

From £50.00

40mm Bottom Entry General Purpose Pressure Gauge

From £17.33

40mm Back Entry General Purpose Pressure Gauge

From £17.33

Compact Industrial Pressure Gauges

40mm pressure gauges provide local pressure indication where panel space, equipment size or installation access is limited. Their compact dial size makes them a practical choice for pneumatic equipment, hydraulic systems, compressors, test rigs and OEM machinery requiring clear, routine pressure measurement at the point of use.

This collection supports buyers looking for small dial pressure gauges for replacement, maintenance stock or new equipment builds. Options may include dry gauges for stable operating conditions and glycerine filled pressure gauges where vibration or pulsation can affect pointer readability.

When replacing an existing gauge, match the pressure range, process connection, mounting style and media compatibility before ordering. For demanding environments, consider whether a stainless steel pressure gauge or compatible pressure gauge accessory is required for the wider installation.

Compact Dial Size

A 40mm dial is suited to equipment where space is limited, while still providing local pressure indication for routine checks and maintenance.

Dry or Filled Options

Dry gauges suit stable applications, while glycerine filled versions can help improve readability where vibration or pressure pulsation is present.

Replacement Friendly

Useful for maintenance teams and OEM buyers replacing small pressure indicators, provided the pressure range, connection and mounting arrangement match.

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Typical Applications

These compact gauges are used across industrial equipment where local pressure measurement is required close to the process, machine or control panel.

Pneumatic Equipment

Used on air lines, regulators, control panels and pneumatic machinery for quick visual confirmation of operating pressure.

Hydraulic Units

Suitable for compact hydraulic power packs and maintenance points where a small gauge is needed for local pressure indication.

Compressors and Air Systems

Applied on compressor packages, receiver connections and compressed air equipment where space-saving pressure monitoring is required.

OEM Machinery

Commonly specified on machine builds, test equipment and process skids where compact instrumentation supports operator checks and commissioning.

Choosing a 40mm Gauge

Select a compact pressure gauge by matching it to the operating conditions, installation layout and the existing equipment specification.

Pressure Range

Choose a range that suits the normal working pressure of the system and allows clear reading during routine operation.

Connection and Mounting

Check the thread type, connection position and mounting arrangement against the existing gauge or equipment design before replacing.

Dry or Glycerine Filled

Use dry gauges for steady conditions and consider glycerine filled gauges where vibration, pulsation or pointer movement may affect readability.

Media and Environment

Confirm the gauge materials are compatible with the process media and surrounding environment, especially in damp, dirty or corrosive areas.

40mm Gauge FAQs

Common questions from engineers, maintenance teams and buyers selecting compact pressure gauges for industrial equipment.

What is a 40mm pressure gauge used for?

A 40mm pressure gauge is used for compact local pressure indication on equipment such as pneumatic panels, hydraulic units, compressors and OEM machinery.

Can I replace an existing gauge with a 40mm gauge?

Yes, if the pressure range, connection thread, connection position, mounting style and media compatibility match the existing installation.

Should I choose a dry or glycerine filled 40mm gauge?

Dry gauges suit stable applications. Glycerine filled gauges are often selected where vibration or pulsating pressure could make the pointer harder to read.

Are 40mm gauges suitable for hydraulic systems?

They can be used on hydraulic equipment when the selected gauge has a suitable pressure range, connection and material compatibility for the system.