The Vintage Ashton Valve Co. Westinghouse 6" 150 PSI Railroad Valve is a rare and collectible piece of American industrial history. Made in Wilmerding, Pennsylvania by Westinghouse, this valve holds a special significance for collectors of railroadiana and transportation memorabilia. With a unique design and a country of origin of the United States, this valve is a valuable addition to any collection. The item is 6" dia x 2-1/8" thick with glass face and brass case. See photos as part of description. Ask any questions.