Indus Industrial Group supplies heavy-duty Double Flanged Double Eccentric (High Performance) Butterfly Valves engineered across large nominal diameters from DN100 to DN2400 in pressure classes PN10, PN16, and PN25 according to EN 593 and EN 1074-1/2 standards. Engineered with dual-shaft offset geometry that cams the disc away from the resilient EPDM seal ring during the first degrees of opening, these valves eliminate seal friction, seat scuffing, and operating torque spikes. Cast from high-tensile ductile iron (EN-GJS-500-7) with stainless steel body seats and self-locking worm gearboxes (IP67/IP68), they deliver bi-directional zero-leakage shutoff in major water transmission pipelines across Iraq.
| Pricing Verification | Commercial Quote on Demand (RFQ) |
| Governing Standards | EN 593 / EN 1074-1/2 / ISO 10631 / AWWA C504 |
| Face-to-Face Standards | EN 558-1 Series 14 (DIN 3202 F4) / Series 13 (BS 5155) |
| Nominal Diameter Range | DN100 to DN2400 (Large Transmission Diameters) |
| Pressure Ratings | PN10, PN16, PN25 (Bar) |
| Body & Disc Material | Ductile Iron EN-GJS-500-7 (min 420 MPa tensile strength) |
| Body Seat Surface | Continuously Welded Stainless Steel 316L (Micro-Finished) |
| Disc Seal Ring | High-Elasticity EPDM Rubber (WRAS drinking water approved) |
| Shaft Material | High-Tensile Stainless Steel AISI 420 / 431 / 316 (Two-Piece) |
| Operating Mechanism | Enclosed Worm Gearbox IP68 / ISO 5211 Electric Actuator Flange |
| Corrosion Protection | Fusion-Bonded Epoxy (FBE ≥ 250 µm) inside and outside |
| Sector & Division | Water & Wastewater (Div 01) |
| Parent Category | Flanged Butterfly Valves |
Major municipal water transmission lines, Tigris and Euphrates river raw water booster stations, water treatment plant filter gallery manifolds, thermal power plant cooling circuits, and reservoir dam outlet isolation lines across Baghdad, Erbil, Basra, Nineveh, and Wasit.
Double Eccentric Flanged Butterfly Valves represent the benchmark isolation and flow control technology for large-diameter municipal water conveyance, raw river water booster mains, and water treatment plant galleries across Iraq. Governed by EN 593, EN 1074-2, and ISO 10631 standards, the double offset geometry places the shaft axis behind the plane of the sealing seat (first eccentricity) and offset from the center of the pipe bore (second eccentricity). This mechanical camming action lifts the disc seal completely off the body seat within 5 degrees of rotation, preventing continuous frictional wiping, extending elastomeric seal life to over 25 years, and dramatically reducing required actuator torque.
The valve body and disc are cast from premium spheroidal graphite ductile iron (EN-GJS-500-7). The body seat features an integrally welded continuous 316L stainless steel cladding or nickel-chrome micro-finished ring that provides permanent cavitation and erosion resistance. The profile seal is manufactured from high-elasticity EPDM retained by a precision stainless steel retaining ring with adjustable set screws, allowing field seal adjustment or replacement without removing the valve from the pipeline.
Equipped with heavy-duty enclosed worm gear operators (IP68 submersible rated) or ISO 5211 direct actuator mounting pads, the valve provides smooth closing action that eliminates hydraulic water hammer transients. Coated with electrostatically applied blue fusion-bonded epoxy (min 250 µm, WRAS approved), these valves are physically staged at the Erbil Heavy Plant Yard, Baghdad Central Logistics Hub, and Basra Port Corridor with complete EN 10204 3.1 mill test certificates and hydrostatic hydro-test logs.
For diameters of DN300 and above, double eccentric butterfly valves are substantially lighter in weight, require only 25% of the face-to-face length of gate valves, and operate with significantly lower closing torque. This dramatically reduces chamber excavation dimensions, structural concrete costs, and actuator sizing.
Yes. The EPDM profile seal ring is clamped onto the disc perimeter by a stainless steel retaining ring secured with hex-socket bolts. Technicians can adjust sealing compression or replace the rubber ring directly inside the valve vault without removing the valve body from the pipeline.
Yes. Indus supplies complete automated butterfly valve packages equipped with certified multi-turn electric actuators (Auma, Rotork, or Indus Industrial actuation packages) with 400V 3-phase power, 4–20mA modulating cards, and Modbus/Profibus fieldbus integration.
