The AQ4L has been added to Alfa Laval's AlfaQ Series of ARI-certified plate heat exchangers. The Air-Conditioning and Refrigeration Institute certification verifies that the heat exchanger is in accordance with ARI Standard 400, an independent verification that the heat exchanger will perform as specified. The AQ4L features a 4-inch port and is designed for the HVAC cooling market. According to the company, the product's extra-long plate is constructed to achieve the close-temperature approach required by HVAC applications. The AQ4L is also suitable for all HVAC duties including free cooling, pressure interceptors and building interchangers.

Alfa Laval Inc., 5400 International Trade Drive, Richmond, VA 23231; (866) 253-2528; www.alfalaval.us.