Model Number: D341-7 Key Specifications/Special Features: Product descriptionDouble flange type butterfly valveProduct featuresThis series of butterfly valves are suitable to be used for industrial pipeline as two-way open-closing and regulating devices.The scope of regulation is from 4o°to 90°fully open.If the valve is one-way used, the recommended pressure direction of closing is shown on fig.1. The disk is truss framed with two-plate and flow-resistant is lower.2. It has reliable sealing structure for two-way stopping without any leakage.3. The axle sleeves are self-lubricated bearing. Oiling is not need and friction drag is small during operation.4. Rubber sealing can be replaced on pipeline without removing the valve (DN>700).5. Several kinds of actuators with reliable performance and agile operation are supplied for the liser's selection. Wear-resisting and corrosion-resisting.Butterfly valve specifications:Body/disc: Duplex steel
Body seat: Stainless steel BS EN 10088 Grade 1.4057 (431)
Disc seat: EPDM
Shaft: Stainless steel BS EN 10088 Grade 1.4057 (431)
Flange standard: GB4216.3-84, BS4504, ANSI B16.1
Face to face: GB12221-89 series 13,BS5155,ANSI B16.10
Pressure test: GB/T 13927-92 Grade A(or on request)
Leakage: No visible detectable leakage