Fujitsu General America’s two larger refrigerant branch units simply installations and expand the heat recovery capability of its VR-II series Airstage VRF systems, the company explains. The new RBUs, which manage simultaneous heating and cooling in heat-recovery systems, can serve between eight and 12 zones. Previously, only four zones could be served by a single RBU. This advancement permits engineers, architects and installers to use fewer RBUs, and also expands the flexibility of heat-recovery systems, providing the opportunity to share thermal energy across more zones. www.fujitsugeneral.com

Danfoss’ AK-RC 251 Optyma control is designed to improve room efficiency by up to 30% and reduce installation time by up to 60%. Developed with new and existing systems in mind, the electronic controller eliminates the need for mechanical thermostats in cooling applications, along with defrost timers in freezer applications. The AK-RC 251 Optyma control can control compressors, solenoids, fans, lights, crankcase heaters and up to two defrosts. www.danfoss.us

The Model 170D-LF is a four-port POU valve designed with convenience in mind, the company says. Contractors can feed the faucet fixture with tempered water at ideal temperatures for handwashing applications as well as cold water from the integral "by-pass" feature, which is incorporated into the design. For those installers who do not want the cold water by-pass, every valve is equipped with a by-pass cap for easy shut off capability. The Model 170D-LF also features a tamper-resistant temperature locknut, and is ASSE 1070 certified. www.leonardvalve.com

GF Piping Systems’ Hycleen automation system is an automated balancing and flushing solution for improving potable water safety in premise plumbing. In large hot water distribution systems, stagnation, rough surfaces and temperatures below 122 °F can promote the formation of biofilms and the proliferation of Legionella bacteria. The Hycleen system provides hydraulic temperature balancing and water flushing with a preventive maintenance feature to avoid these problems, GF notes. The new system is particularly suited for buildings with larger hot water distribution systems found in hospitals, schools, offices, hotels and skilled nursing homes. www.gfps.com

Westinghouse’s new single-zone 36,000 Btu/h all-mounted mini-split heat pump system is available in the U.S. and Canadian markets. The 36,000 model features a base pan heater, wireless remote control, front LED display and five indoor fan speeds. www.westinghouseAC-USA.com

Oatey’s updated Drain Seal blocks unwanted odors, sewer gases and insects from entering a building through a drain. The enhanced design won’t restrict water flow or sacrifice drain performance, Oatey adds. The seal is engineered with a drainage system that not only prevents water from evaporating in the P-trap, but also allows for continuous water flow, which simultaneously inhibits ponding or pooling around a drain, the manufacturer explains. Available in 2” or 3” sizes and is compatible with most popular floor and shower drains. www.oatey.com