Temperature-limiting safety valves

Published:  08 July, 2009

Taconova, Danfoss

Taconova now offers two ranges of high-limit safety control valves from Danfoss to limit the temperature of secondary hot water in large-scale heating and DHW systems.

These flow-mounted STLV and STFL series valves can cut off primary hot water to a plate heat exchanger if the secondary temperature of, for example, the DHW is too high. The valve remains shut until it is manually re-opened.

The STLV comprises a pressure-balanced valve with a soft sealing cone and actuator, while the STLV/(AVT) device has a pressure actuator, regulating valve, safety thermostat and two impulse tubes. Available from 15 to 25 mm screwed and 32 to 50 mm, these valves are designed to limit temperature in a range from 45 to 110įC.

The STFL series is identical in function, but supplied in sizes up to 150 mm.

Up to two temperature controllers and one temperature limiter are available in each valve category.

For more information on this story, click here: July 09, 177

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