Screwed/ Flanged Ended Safety Relief Valve is made from quality grade carbon steel, alloy steel, stainless steel, special materials. The Safety Relief Valve is available in the sizes ranging from ½ inch x 1 inch to 8 inches X 10 inches. The Safety Relief Valve comes with balancing bellows, plain or packed lever, open or closed bonnet. The Screwed/ Flanged Ended Safety Relief Valve provides discharge coefficient of 0.974.