The ultra high pressure groove gate valve Z63Y-400 is a series of products developed in combination with API 6D and API 6A in accordance with GB/T20173 and JB/T5298; The pressure range is: PN1.6~PN70 MPa, the temperature range is: - 29~150 ℃, the caliber range is: DN25~DN200, and the end connection mode can be: single groove, double groove, and three groove; This product is mainly used in domestic coal mine underground emulsion comprehensive mining fluid supply and return system, as a hoist device.