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Temptrol self-acting control valves from ARI-Armaturen are designed to modulate temperature control of steam, water and thermal fluid in heating and cooling applications.

The valves are said to be ideal for applications where modulating temperature control is required without the need for sophisticated algorithms, communications capability or auxiliary power.

Nick Davies, sales director at ARI-Armaturen’s UK headquarters in Tewkesbury, said: ‘These are very simple control systems, relying on the expansion and contraction of a fluid in a closed space transferring the movement to a valve stem/spindle.

‘This fluid expansion is constant across the selected range and results in proportional control with (theoretically) infinite turndown.

‘The proportional band of the system is dictated by the combination of application, valve size and everything else is simplified including sizing and selection, installation, process control and maintenance,’ he added.

The Temptrol range includes two port valves configured for heating or cooling applications and three port valves for mixing and diverting systems.

ARI-Armaturen said user benefits include: accurate control – equal percentage flow characteristic offers precise regulation even at low flow rates and stainless steel bellows sealing ensures low friction/minimum hysteresis; reliable and economic – small seat leakage (0.01 per cent from the nominal flow) and friction-free; easy to install and operate; and safe – over-temperature protection integrated within the actuator/capillary unit.

The Temptrol range is available with capillary length from 2-16m and other options include a bellows balanced model for applications requiring a higher shut-off pressure, sensors for pipe systems or air, brass or stainless steel sensor pocket and a manual control device with stroke indicator.

For more that 50 years ARI-Armaturen has been designing and manufacturing specialist valves used for isolating, securing, controlling and steam trapping across a wide range of industrial processes. Now firmly established in the UK, ARI products form a trusted part of the process line in chemical, petrochem, pharmaceutical, food processing, biofeeds, shipbuilding and building automation applications across the UK. ARI-Armaturen manufactures more than 10,000 products with more than 100,000 variants and most of our safety valves can be supplied on a next day basis. All designs undergo stringent in-house testing and the valves are renowned for their high operational safety and reliability based on leading-edge manufacturing technology. With an experienced team of process engineers based at our UK headquarters in Tewkesbury, Gloucestershire, ARI offers all the technical advice and assistance you need with delivery of technologically advanced products and solutions manufactured to international quality and safety standards.

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