Caliber Valves Pvt. Ltd. Manufactures SS-SP Ball Valves. Caliber Valves Pvt. Ltd. Is an ISO 9001-2000 certified company. The SS-SP Ball Valves are used in various industries. Specifications of SS-SP Ball Valves are: Complies: 5351 Sizes: mm to 50mm Mat: - ASTM A351 Gr.CF8/CF8M Trim: SI 304 / 316 Type: ingle Piece Rating: ass 150 / 300 Ends: Screwed