100mm Pressure Gauges

100mm pressure gauges provide clear local pressure indication for plant, pipework, panels and process equipment where readings need to be checked quickly during operation or maintenance. The larger dial face is useful for industrial pressure measurement duties where visibility is important compared with smaller compact gauges.

This range supports replacement gauges, OEM equipment and new industrial systems across mechanical services, building services, utilities and manufacturing environments. When selecting a gauge, consider the pressure range, connection position, thread type, mounting arrangement and suitability for the process media and operating conditions.

18 products

100mm Bottom Entry General Purpose Pressure Gauge

From £33.08

100mm Back Entry General Purpose Pressure Gauge

From £33.08

100mm bottom entry low pressure pressure gauge - GNW Instrumentation

100mm Bottom Entry Low Pressure Capsule Gauge

From £64.00

100mm Bottom Entry Industrial Pressure Gauge

From £72.45

100mm Bottom Entry Glycerine Filled Pressure Gauge

From £78.75

100mm Bottom Entry All Stainless Steel Pressure Gauge

From £79.00

100mm Back Entry All Stainless Steel Pressure Gauge

From £79.00

100mm Back Entry Industrial Pressure Gauge

From £82.95

100mm Back Entry Glycerine Filled Pressure Gauge

From £89.25

100mm Back Entry Glycerine Filled All Stainless Steel Pressure Gauge

From £89.25

100mm Bottom Entry Glycerine Filled All Stainless Steel Pressure Gauge

From £89.25

GNW200-MP 100mm Medium Pressure Digital Gauge

£146.00

GNW200-HP 100mm High Pressure Digital Gauge

£146.00

GNW200-UHP 100mm Ultra High Pressure Digital Gauge

£146.00

GNW200-VAC 100mm Digital Vacuum Gauge

£146.00

GNW200-LP 100mm Low Pressure Digital Gauge

£176.00

GNW200-C 100mm Digital Compound Pressure Gauge

£176.00

GNW200-ABS 100mm Absolute Digital Pressure Gauge

£176.00

100mm Industrial Pressure Gauges

100mm pressure gauges provide a larger dial face for clear local pressure indication on plant, pipework, panels and process equipment. The increased dial size can make readings easier to check from a short distance compared with smaller compact gauges, which is useful for maintenance teams and operators carrying out routine inspections.

This collection supports industrial pressure measurement requirements across building services, mechanical services, utilities, manufacturing and OEM equipment. Depending on the selected model, gauges may be suited to general industrial use, stainless steel construction, bottom entry or back entry mounting, and installations where visibility and practical replacement are important.

When replacing an existing gauge, match the pressure range, connection position, thread type, dial orientation and material suitability to the original installation before ordering. For new installations, consider the process media, operating environment, vibration, mounting arrangement and whether any pressure gauge accessories are required.

Clear 100mm Dial

The 100mm dial size provides easy-to-read local pressure indication for operators, engineers and maintenance teams working on industrial plant and services.

Mounting Options

Select a gauge with a connection style and entry position that suits the installation, including typical bottom or back entry arrangements where available.

Industrial Replacement Use

Suitable for planned maintenance, like-for-like replacement, OEM equipment builds and routine pressure measurement where a larger dial is preferred.

Learn more

Typical Applications

100mm dial pressure gauges are used where local pressure readings need to be clear, accessible and practical for routine inspection or maintenance.

Plant Pressure Monitoring

Used on industrial plant and process equipment to provide local pressure indication for operators and service engineers.

HVAC and Building Services

Suitable for monitoring pressure on mechanical services, heating systems, chilled water circuits and associated plant where the selected gauge matches the service.

Pumps and Compressors

Commonly fitted to pump sets, compressor equipment and packaged systems for checking system pressure during operation and maintenance.

OEM Equipment and Panels

Used by equipment builders and panel manufacturers where a clear analogue pressure indicator is required on machinery or control assemblies.

Choosing a 100mm Gauge

Select the gauge by matching it to the operating conditions, installation layout and required pressure measurement task rather than dial size alone.

Dial Visibility

Choose a 100mm dial where readings need to be checked quickly or from a short distance, especially on plant rooms, panels and equipment skids.

Pressure Range

Match the pressure range to the normal working pressure and expected maximum pressure of the system. Avoid selecting a range solely by the highest available scale.

Connection and Mounting

Check the thread type, entry position and mounting arrangement before ordering. Bottom entry and back entry gauges are not always interchangeable without altering the installation.

Media and Environment

Consider whether the gauge body and wetted parts are suitable for the process media and surrounding conditions. Where vibration or pressure pulsation is present, consider a damped or glycerine filled pressure gauge if appropriate.

100mm Gauge FAQs

These answers cover common selection and replacement questions for industrial 100mm pressure gauges.

What is a 100mm pressure gauge used for?

A 100mm pressure gauge is used for local pressure indication where a larger, clearer dial is helpful, such as plant equipment, pipework, HVAC systems, pumps, compressors and OEM machinery.

How do I replace an existing 100mm pressure gauge?

Match the pressure range, connection thread, entry position, dial orientation and material suitability. Also check whether the original gauge was dry, liquid filled, panel mounted or fitted with accessories.

Should I choose bottom entry or back entry?

Bottom entry gauges are commonly used on vertical pipework or standalone mounting points, while back entry gauges are often used on panels or front-facing equipment. Choose the arrangement that matches the installation.

When is a glycerine filled 100mm gauge useful?

A glycerine filled pressure gauge can help steady the pointer where vibration or pulsating pressure affects readability. Always confirm compatibility with the application and environment before selection.