A Rada “R” Series thermostatic mixing valve for thermostatic control of central recirculating hot water systems features a unique thermostatic return-limiting device that monitors returning water temperatures and eliminates dangerous overnight temperature creep, states the company. It has a flow-modulating internal design, so it can deliver up to 100 gallons per minute, as well as control temperature ±2 degrees F at flows as low as 1 gallon per minute, says the company.

Armstrong International Inc., 816 Maple St., Three Rivers, MI 49093; 616-273-1415; www.armstrong-intl.com.

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