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September 2008 <br />TECHNICAL BULLETIN <br />New Husky 5885 Pressure/Vacuum Vent Valve <br />Husky Corporation is pleased to introduce our new Phase One EVR approved <br />pressure/vacuum vent valve. Three precision valve assemblies are at the core of our vent <br />valve design. The first overpressure valve is diaphragm operated giving 10 times more <br />sealing force than gravity devices. It consistently opens at 2.5-6" of water column (WC) <br />pressure. The safety overpressure valve is designed to handle high pressure/ high flow <br />conditions. This valve will vent at a rate of 7900 SCFH c8 2 psi. The vacuum valve is <br />also diaphragm operated and provides 10 times more sealing force than gravity devices. <br />It consistently opens at 6"-10" of water (WC) vacuum. An internal wire mesh screen is <br />incorporated into the design of the 5885 vent valve to protect the pressure plate in the <br />event of an improper bulk drop. <br />The Husky 5885 is the only CARB approved Phase One EVR vent valve available for <br />use in California. The valve is identified with yellow colored labels one of which baldly <br />identities the vent valve as EVR approved. 1 <br />Our 4885 and 4620 pressure/vacuum vent valves are approved for non-EVR phase one <br />systems and are identified with green colored labels. This color coding method makes <br />vent valve identification easily determined from ground level. <br />2325 Husky Way • Pacific, MO 63069 • (636) 825-7200 • (636) 825.7300 (fax) • www.husky,com <br />