The Widest Selection The Clearest View

Our Heritage

Rhodes are one of Great Britain's market leaders in the design and manufacture of sight flow indicators and sight glasses, having been producing indicators since 1951. Rhodes products can be found in process and petrochemical plants all over the world.

Rhodes Flow Indicators and Sight Glasses enable a visual check to the flow of liquids or gases through a pipeline. The pressure range available starts from full vacuum, up to 50 bar, with temperatures ranging from -150ºC up to 250ºC.

The Rhodes' product range has an international reputation for excellence and brings its own area of specialist expertise to markets right across the world. The standard range is well specified by major blue chip companies and is complemented by a design service to build bespoke items to specialist criteria.

Rhodes are proud to supply a wide variety of sight glasses and flow indicators available in various types, materials and port connections.

Quality & Customer Service Guaranteed

Rhodes Sight Flow Indicators are designed manufactured, and tested in dedicated production facilities based in the United Kingdom.

Rhodes employ a continuous programme of research and product development using the very latest innovations in manufacturing technology. Quality systems are accredited to ISO 9001 and 14001 and Rhodes has ensured that all products and standard documentation meet the Pressure Equipment Directive requirements.

The search for quality should mean more than just certificates. Each and every member of the Rhodes team strive to meet market and customer needs and specifications, aimed at providing a first class product combined with the highest level of customer service.

All Rhodes products are PED compliant and CE marked where applicable. Full certification and documentation available as required.

Product Applications

Oil & Gas

Oil & Gas





Process Plants

Process Plants

Liquid Storage and Transfer

The distribution of liquids frequently embraces many stages of filling and emptying vessels as well as flow through pipelines. Efficiency and stock control often require an operator to know the status of a vessel or pipe and Rhodes Flow Indicators have filled this need for many years. For more information on the application and duties for Rhodes Flow Indicators please view pages 30 and 31 of our latest catalogue.

Protection & Performance of Equipment

Rhodes moving member indicator models 400, 900 and 408 series provide operators with clear and easy indication of flow deviation, enabling quick and sure identification of flow failure with any cooling or lubricating liquid. Quick and easy identification of any flow issues is critical for both safe operation and prolonging the life of equipment.

Process Indication

Many processes, whether automated or manual, still require the judgement of the human eye to ensure product quality and consistency. Rhodes models within the 900 series enable operators to clearly see what is happening inside a pipe or process vessel.

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