Parveen Industries Pvt. Ltd. Designs and manufactures Green Subs Black Nut Hammer Unions. The Green Subs Black Nut Hammer Unions falls in the category of the Treating Irons, Unions, Swivels and Circulating Heads. Parveen Industries Pvt. Ltd. Is an ISO 9001: 2000 certified company. These Green Subs Black Nut Hammer Unions have a ball seat incorporating a primary `O` ring seal with a metal secondary seal which assures perfect sealing in misalignment position. The degree of misalignment is up to 2 inch size is 40 and beyond 2 inch size it is 7 1 /20. This Green Subs Black Nut Hammer union is suited for use on high pressure lines. They are available in 10000 PSI with end threaded or butt- welded for welding.
