40mm All Stainless Steel Pressure Gauges

40mm all stainless steel pressure gauges provide compact local pressure indication for industrial equipment, machinery and process systems where space is limited. Their stainless steel case and internals make them a practical choice for demanding environments, including installations exposed to moisture, washdown, outdoor conditions or compatible process media.

These small industrial pressure gauges are suitable for replacement gauges, OEM equipment and maintenance use, with options to suit common pressure measurement and mounting requirements. Select the pressure range, connection type, entry position and dry or glycerine filled construction to match the existing installation or new system design.

4 products

40mm Back Entry All Stainless Steel Pressure Gauge

From £57.00

40mm Bottom Entry All Stainless Steel Pressure Gauge

From £50.00

40mm Bottom Entry Glycerine Filled All Stainless Steel Pressure Gauge

From £57.75

40mm Back Entry Glycerine Filled All Stainless Steel Pressure Gauge

From £65.10

40mm All Stainless Steel Pressure Gauges Overview

40mm All Stainless Steel Pressure Gauges are designed for reliable pressure indication in compact installations where corrosion resistance and durability are essential. Featuring a 304 stainless steel case and 316L stainless steel internals these gauges are suitable for aggressive environments and demanding process conditions. Available in bottom entry and back entry configurations they support panel mounting surface mounting and direct mounting.

Their compact size allows installation in space restricted areas while maintaining dependable performance. These gauges are widely used where standard brass based gauges are not suitable due to media compatibility or environmental exposure.

Compact Stainless Steel Gauges

40mm all stainless steel pressure gauges are used where a compact dial size is required with improved corrosion resistance compared with brass-wetted or standard case gauges. They are suited to local pressure indication on industrial equipment, process pipework, hydraulic systems and machinery where space is limited.

The stainless steel case and stainless steel internals make these small pressure indicators suitable for demanding environments, including areas exposed to moisture, washdown, outdoor conditions or compatible process media. Dry versions are typically used for stable pressure applications, while glycerine filled gauges can help damp pointer movement where vibration or pulsation is present.

When selecting a replacement gauge, match the pressure range, connection type, entry position and mounting style to the existing installation. For new equipment builds or maintenance stock, consider whether bottom entry, back entry, panel mounting, surface mounting or direct mounting is most appropriate for the equipment layout.

Compact 40mm Dial

A 40mm dial size supports local pressure indication in restricted spaces, control panels, compact machinery and small process assemblies.

Stainless Steel Construction

All stainless steel construction is suitable where corrosion resistance, environmental exposure or media compatibility are important selection factors.

Dry or Filled Options

Choose dry gauges for steady applications or glycerine filled versions where vibration and pressure pulsation may affect readability.

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Typical Applications

These compact industrial pressure gauges are used across process, maintenance and OEM environments where durable local pressure indication is required.

Process Pipework

Used for local pressure measurement on compatible process lines where stainless steel wetted parts and compact installation are required.

Hydraulic Equipment

Suitable for monitoring pressure on compact hydraulic systems, test points and machinery where vibration may require a filled gauge option.

Control Panels

Back entry and panel mounting configurations can be used where pressure indication is needed within instrumentation panels or equipment fascias.

Maintenance Replacement

Useful for replacing existing small dial gauges during planned maintenance, provided range, connection, entry position and media suitability are matched.

Choosing the Right Gauge

Select a 40mm stainless steel pressure gauge by matching the technical requirements of the installation, not only the dial size.

Pressure Range

Choose a range that suits the normal operating pressure and expected pressure peaks. Avoid selecting only by maximum system pressure without considering readability.

Connection and Entry

Check whether the installation needs bottom entry or back entry, and confirm the required BSP or NPT thread before ordering a replacement.

Dry or Glycerine Filled

Use dry gauges for steady pressure indication. Consider glycerine filled gauges where vibration, pulsation or moving machinery can cause pointer fluctuation.

Mounting Style

Confirm whether the gauge will be direct mounted, surface mounted or panel mounted so the connection orientation and accessories suit the installation.

Buyer Questions

Common questions about selecting and replacing 40mm all stainless steel pressure gauges for industrial use.

When should I choose an all stainless steel pressure gauge?

Choose an all stainless steel gauge where corrosion resistance, environmental exposure or compatibility with the process media makes a standard brass-based gauge unsuitable.

Are 40mm pressure gauges suitable for industrial use?

Yes, 40mm gauges are commonly used for compact industrial pressure indication where space is limited. Ensure the pressure range, connection and mounting style match the application.

Should I select a dry or glycerine filled gauge?

Dry gauges suit stable pressure applications. Glycerine filled gauges are generally preferred where vibration or pulsation can make the pointer difficult to read.

How do I replace an existing 40mm pressure gauge?

Match the dial size, pressure range, thread type, entry position, mounting arrangement and wetted material suitability before fitting a replacement gauge.