Product Description Features I,Compact structure and reasonable design. The valve has fine stiffness, with small flow resistance. Ⅱ,The gate of the valve with flow guide hole is always fitted with the sealing face whether in full open or full close conditions to have the seal surface protected without being directly eroded by the medium so as to extend service life. Ⅲ,When fully opened, the valve's channel is smooth and linear, with an extremely small flow resistance and no pressure loss, and the pipeline can be cleaned with hair-ball through it. Ⅳ,The part materials and flange dimensions may be selected according to current working condition and customer's requirement, so that meet the requirements of various engineering. Technical Data Size: NPS2~36 Pressure Ratings: Class150 ~ Class1500 Temperature: -29℃~450℃ Design Standard: API 6D Face to Face: API 6D Flange Ends: ASME B 16.5 Butt-welding Ends: ASME B16.25 Test and Inspection: API 6D ,ISO 5208 Notes: The sizes of serial valve flange and butt-welding dimensions can be designed according to customer's requirement.