Yibengfa D71X-16P Wafer Butterfly Valve: Dimensions and Technical Parameters
It combines a compact wafer body with a resilient seat for bubble-tight shutoff at low pressure. While “Yibengfa” operates as a valve industry platform rather than a single manufacturing brand, the technical data below reflects the standard D71X-16P specification shared across reputable Chinese valve makers and is directly applicable for selection and procurement.The main Butterfly Valve product names of China Butterfly Valve Network include:Electric Desulfurization Flange Butterfly Valve,Fire Signal Butterfly Valve,Flange Soft-sealed Butterfly Valve,Flange Insulation Butterfly Valve,Flange Ceramic Hard-sealed Butterfly Valve,Flange Metal Sealed Swing Butterfly Valve,Groove Butterfly Valve,Hydraulic Control Butterfly Valve,Hydraulic Control Check Butterfly Valve.
Technical Parameters
The D71X-16P carries a nominal pressure rating of PN16 (1.6 MPa). Shell test pressure is 2.4 MPa, and seal test pressure is 1.76 MPa. The valve body is constructed from CF8 (304 stainless steel), with a CF8 disc and a 420 stainless steel stem. The standard seat material is EPDM rubber, suitable for media temperatures from -40 to 125 degrees Celsius, making it appropriate for water and neutral liquids. The design standard is GB/T 12238, with structural length per GB/T 12221, flange connection per GB/T 9113, and pressure testing per GB/T 13927. The valve is operated by a lever handle and is designed for installation between two pipeline flanges.
Dimensions
Dimensions are given in millimeters. For DN50 (2 inch): face-to-face length L is 43, flange outer diameter D is 165, bolt circle D1 is 125, with 4-18 bolt holes, and handle height H is approximately 63. For DN65 (2.5 inch): L 46, D 185, D1 145, 4-18 holes, H 70. For DN80 (3 inch): L 46, D 200, D1 160, 8-18 holes, H 83. For DN100 (4 inch): L 52, D 220, D1 180, 8-18 holes, H 105. For DN125 (5 inch): L 56, D 250, D1 210, 8-18 holes, H 115. For DN150 (6 inch): L 56, D 285, D1 240, 8-22 holes, H 137.
Summary
The D71X-16P wafer butterfly valve offers a PN16 rating, 304 stainless steel wetted parts, and EPDM seating for water and neutral liquid service up to 125 degrees Celsius. Dimensions are available from DN50 through DN150 with standard flange drilling. For project procurement, confirm the specific manufacturer’s material certificates and pressure test reports, as dimensional tolerances and seat material options may vary slightly between suppliers.
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