General Purpose Pressure Gauges

Dry pressure gauges for routine industrial duties in stable conditions. Compare six dial sizes, bottom- or back-entry connections and ranges for pressure or vacuum.

40mm Back Entry General Purpose Pressure Gauge - GNW Instrumentation

40mm General Purpose Pressure Gauges

50mm Bottom Entry General Purpose Pressure Gauge - GNW Instrumentation

50mm General Purpose Pressure Gauges

63mm Bottom Entry General Purpose Pressure Gauge - GNW Instrumentation

63mm General Purpose Pressure Gauges

80mm Bottom Entry General Purpose Pressure Gauge - GNW Instrumentation

80mm General Purpose Pressure Gauges

100mm Bottom Entry General Purpose Pressure Gauge

100mm General Purpose Pressure Gauges

160mm Bottom Entry General Purpose Pressure Gauge - GNW Instrumentation

160mm General Purpose Pressure Gauges

Gauge Accessories

Collection

11 products

40mm Bottom Entry General Purpose Pressure Gauge

From £17.33

40mm Back Entry General Purpose Pressure Gauge

From £17.33

50mm Bottom Entry General Purpose Pressure Gauge

From £17.33

50mm Back Entry General Purpose Pressure Gauge

From £17.33

63mm Bottom Entry General Purpose Pressure Gauge

From £23.10

63mm Back Entry General Purpose Pressure Gauge

From £23.10

80mm Bottom Entry General Purpose Pressure Gauge

From £36.75

80mm Back Entry General Purpose Pressure Gauge

From £44.10

100mm Bottom Entry General Purpose Pressure Gauge

From £33.08

100mm Back Entry General Purpose Pressure Gauge

From £33.08

160mm Bottom Entry General Purpose Pressure Gauge

From £44.10

Choosing the Right Gauge

General-purpose pressure gauges provide economical local indication for routine air, water and oil duties where operating conditions are stable and the specified wetted materials suit the medium.

The range covers compact 40 mm instruments through to larger 160 mm dials. Choose the size around both the available space and the distance from which the reading will normally be viewed.

When replacing a gauge, match the range, scale units, connection size, thread form and entry position. A similar case diameter does not guarantee that the instrument will fit or measure the correct pressure.

If vibration or pressure pulsation makes a dry pointer difficult to read, compare glycerine-filled pressure gauges. For alternative construction and wetted-material options, browse industrial pressure gauges or all stainless steel pressure gauges.

Replacing an Existing Gauge

Record the complete scale, dial size, thread form, connection size and entry position before ordering. Two gauges with the same case diameter may not be interchangeable.

Consider why the existing instrument needs replacement. Repeated pointer flutter may indicate vibration or pulsation; corrosion may indicate unsuitable wetted materials; a bent pointer can suggest that the selected range was too low.

A direct replacement should match the duty as well as the physical fit. Check the medium, temperature and expected pressure peaks before selecting the new gauge.

Dry Construction

A straightforward mechanical option for stable equipment where vibration and pressure pulsation are limited.

Six Dial Sizes

Choose from 40, 50, 63, 80, 100 and 160 mm dials to balance available space with viewing distance.

Connection Choices

Compare bottom- and back-entry models, then confirm the connection size and thread form for the installation.

Learn more

Applications

Suitable for routine monitoring and replacement work where the pressure, medium and operating conditions match the selected gauge.

Compressed air

Read local pressure on pneumatic equipment with a suitable range and connection.

Building services

Monitor water and service systems where the gauge materials suit the duty.

Machine maintenance

Replace routine pressure indicators after matching the original specification.

How to Choose

Record the working pressure, check material compatibility, choose a readable dial and match the complete connection arrangement.

Record the working pressure

Select a scale with room for expected pressure peaks.

Check the wetted materials

Confirm suitability for the air, water, oil or other medium in the system.

Choose a readable dial

Balance viewing distance against the space available.

Match the connection

Confirm the thread form, size and entry position before ordering.

Frequently asked questions

Practical answers to help with selection and replacement.

What does general-purpose mean?

It describes a gauge for routine local indication. Suitability still depends on the pressure, medium and installation.

Can I use a dry gauge on a pump?

Yes, where the medium and pressure suit the specification and pulsation is limited. A filled gauge or suitable snubber may be needed if the pointer fluctuates.

Are all dial sizes equally accurate?

No. The stated accuracy varies by size and model. Check the product specification when comparing alternatives.

What should I send GNW for a replacement?

A photograph of the dial and connection, the thread details and a description of the operating conditions will help identify the right option.