Wholesale distributor of pressure, temperature, flow, and level instrumentation since 1989.
BLUEline float switch
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Harwil L-21N Level Switch
Harwil® type L-21N industrial level switches are low cost, high performance switches made from highly durable plastics. Commonly used on restoration tanks for carpet cleaners, they feature a variable liquid differential and a single point pump up/pump down level control. Interchangeable differential band modules, for all non L-21+ versions, allow for 5 minute on-site switching of differentials. The unit below has a 5″ differential and fits most Hydramaster and BLUEline models. Other differential lengths and configurations available. Please call or request a quote.Data Sheet
Manufacturer Series Harwil L-21N/15A/5/AA/3FT(16-3)/.030F