Instruments

Established 1913

UK Manufacturer & Supplier of Pressure and Temperature Instrumentation

Industrial Non-Industrial

+44 (0)1946 816600

Fire sprinkler pressure gauge

Brannan fire sprinkler pressure gauge designed to provide a quick visual inspection of the water or air pressure within a fire sprinkler system, ensuring it is properly charged and ready to operate. These gauges allow inspectors to confirm that pressure levels are sufficient to control a fire and to identify issues like leaks or closed valves.

Posted 14th July 2026

Pressure and thermometer test plug kit

The Brannan test plug kit for quick, temporary readings of a system’s internal pressure and temperature without having to shut the system down or permanently install expensive gauges.

Posted 14th July 2026

Banner In house dial manufacture desktop

In-house-instrumentation-production

Brannan’s pressure gauges and thermometers can be found on construction builds around the globe. We have been manufactured gauges for many years at our factory in the UK and can offer customer own branding for small quantities.

Posted 14th July 2026

Precision instrumentation for mission-critical environments

In mission-critical environments, accurate pressure monitoring is essential for maintaining system performance, protecting equipment, and supporting operational resilience.

Posted 13th July 2026

Process Instrumentation Catalogue

The BRANNAN Process Instrumentation catalogue is now available to view.

Posted 20th January 2025

Who invented the Bourdon pressure gauge?

In 1852, Edward Ashcroft bought the US Patent of Bourdon’s design and he became a well-known gauge manufacturer. When Bourdon’s patents expired in 1875, Bernard Schaeffer of Magdeburg, Germany, began to manufacture gauges via his own company, Schaeffer and Budenburg.

Posted 17th February 2021

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Fire sprinkler pressure gauge

Pressure and thermometer test plug kit

In-house-instrumentation-production

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