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| Viking's new dry valve  Viking Corporation has added a new dry valve to its quality line of fire protection systems. The new model G-4000 dry valve, which is cULus Listed and FM Approved, offers many design and installation advantages including simplified trim, reduced weight, and a compact size. The new G-4000 dry valve includes an innovative external reset feature. To reset the valve, the installer simply re-establishes air pressure to the system and then pressurizes the valve's unique priming chamber. In a fire condition, system air pressure is lost and the priming chamber compresses allowing water to pass through the valve and into the sprinkler system piping. The new dry valve has a pressure rating of 250 PSI (17,2 bar) and features a strong, lightweight, ductile iron body with black E-coat.The new G-4000 dry valve is available in a four-inch size and includes complete, factory-installed trim components. The complete G-4000 dry valve assembly includes the valve and trim package as well as the water supply control valve, alarm pressure switch, and air supervisory switch. A 12 inch (0,3 m) section of piping is also included to facilitate installation and future servicing of the valve. write your comments about the article :: © 2008 Construction News :: home page |