Butterfly Valve, Double Eccentric, Flanged Type, F4 MIRAB Butterfly valves are used for fluids such as raw water, drinking water, waste water, compressed air and neutral gases at temperatures up to 70° C and are designed with flow optimization to ensure minimum effects on the flow when the valve is open. This ensures that the whole system can be operated, with the lowest possible head loss coefficient. The valve discs of MIRAB butterfly valves are supported in the body with double eccentricity and Low friction bearings provide maximum radial support for higher shaft loads. The PTFE lined bearings having low coefficient of friction minimizes operating torque and reduces actuator size. They are slip-in place type, easy for assemble and disassembly. Corrosion protection of the body parts: Protection in accordance with quality assurance RAL-5015 or RAL-5005, at least 250 μm, epoxy coating, each “blue” coloured. Other coating options are available, please contact us for advice. Valve actuators: 1- Worm gearboxes with handwheel, 2- Spindel gearboxes with handwheel, 3- Electric rotary actuators, 4-Pneumatic Actuators, 5- Hydraulic Actuators Product group : Butterfly Valves (BV)، Fields of application : Water treatment، Water Distribution network، Water transmission، Fire protection network، Dams and hydropower، Irrigation، Industrial applications، Medium : Raw water، Drinking water، Industrial Wastewater، Sea water، Body : Ductile Cast Iron، Carbon steel, low alloy steel، Stainless Steel، Nickel Aluminum Bronze، Aluminum Bronze ، Disc : Nickel Aluminum Bronze، Aluminum Bronze، Ductile Cast Iron، Carbon steel, low alloy steel، Stainless Steel، Sealing : NBR، EPDM، Temperature °C : Up to 70 Size (mm) : 100 - 3000 Pressure (bar) : 6 - 64 Description : Design Standard: DIN EN 593 (DIN3354) Face to Face Dimension: DIN EN 558 -1 series 14 (DIN 3202 – F4) Flange Dimension: DIN EN 1092-2 (DIN2501)