Model Number: D43R-6 Key Specifications/Special Features: Product descriptionDouble flange type butterfly valveProduct featureThis 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 40° 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-lubricanted 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 specification:Body/disc: ductile iron BS EN 1563 EN-GJS-400-15Body 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