ENPRESS LLC announces the addition of three standard size composite pressure vessels, available with standard inlet options of 2.5″ (63.5 mm) NPSM or four-inch (101.6 mm) UN threads: 14×30, 14×54 and 14×65. All sizes available with Vortech” Bottom Distributor Plate, which eliminates gravel under-bedding, allows for reduction of backwash rates up to 30 percent and offers savings on salt and water usage. For ease of use, the riser does not come out when the valve is removed and serviced. Also available are NSF-approved 14×47 DI exchange vessels with 4.5″ (114.3 mm) buttress-top openings. Made of high-impact and abuse-resistant plastic, the base is designed to remain attached to the vessel. All residential and light commercial vessels are backed by an exclusive manufacturers 10-year limited warranty and are 100 percent Made in the USA. Non-permanent tank installations for conventional DI applications are backed by a five-year, pro-rated limited warranty.www.enpress.com