Temperature-limiting safety valves
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 110°C.
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.