Indus Industrial Group supplies heavy-duty Concentric and Eccentric Double Flanged Ductile Iron Reducers engineered across nominal diameters from DN80 to DN2000 in pressure classes PN10, PN16, PN25, and PN40 according to EN 545 and ISO 2531 standards. Cast from premium spheroidal graphite ductile iron (EN-GJS-500-7) with blue fusion-bonded epoxy (min 250 µm), concentric flanged reducers provide smooth hydraulic transitions in vertical and horizontal pressurized water mains, while eccentric flanged reducers maintain flat top alignment on horizontal pump suction nozzles to prevent air pocket cavitation across Iraqi pumping stations.
| Pricing Verification | Commercial Quote on Demand (RFQ) |
| Governing Standards | EN 545 / ISO 2531 / BS EN 545 / EN 1092-2 |
| Nominal Diameter Range | DN80 to DN2000 (Large & Small Flange Sizes) |
| Configurations | Concentric (Symmetric) / Eccentric (Flat-Top / Flat-Bottom) |
| Pressure Classes | PN10, PN16, PN25, PN40 (Bar) |
| Material Grade | Spheroidal Graphite Iron EN-GJS-500-7 (min 420 MPa tensile strength) |
| Elongation at Break | ≥ 7% to 10% |
| Surface Protection | Fusion-Bonded Epoxy (FBE ≥ 250 µm) WRAS Certified |
| Flange Drilling | EN 1092-2 / ISO 7005-2 (PN10 / PN16 / PN25 / PN40) |
| Factory Hydrostatic Test | 1.5 × PN rating (100% individual casting test) |
| Operating Temperature | -10°C to +55°C continuous duty |
| Sector & Division | Water & Wastewater (Div 01) |
| Parent Category | Ductile Iron Flanged Fittings |
Centrifugal pump suction and discharge nozzle transitions, water treatment plant chemical dosing headers, flow meter vault diameter reductions, and booster station manifold headers across Baghdad, Erbil, Basra, Mosul, and Karbala.
Concentric and Eccentric Flanged Ductile Iron Reducers represent the essential diameter-transition fittings for high-pressure pump suction and discharge manifolds, water treatment plant filter piping, and municipal flow meter chambers across Iraq. Governed by EN 545, ISO 2531, and BS EN 545 standards, these fittings are cast from spheroidal graphite iron (EN-GJS-500-7) with high structural tensile strength (≥420 MPa) and high fatigue resistance. In heavy pump stations pumping river water from the Tigris, Euphrates, or Zab rivers, pumps must operate continuously without vibration or cavitation.
The concentric reducer features a symmetrical tapered transition that smoothly changes fluid velocity with minimal head loss in pump discharge lines and vertical risers. The eccentric reducer features a flat horizontal side and an inclined opposite side. When installed on horizontal centrifugal pump suction lines with the flat side oriented on top (flat-top), it completely prevents air bubbles from gathering at the top of the pipe and being sucked into the pump impeller, eliminating destructive pump cavitation, impeller pitting, and bearing failure.
Both flanges are integrally cast and precision-drilled strictly according to EN 1092-2 and ISO 7005-2 in PN10, PN16, PN25, and PN40 pressure ratings. Finished with holiday-free fusion-bonded epoxy (FBE min 250 µm, WRAS approved), Indus flanged reducers are staged across our Erbil Heavy Yard, Baghdad Depot, and Basra Port Hub with full EN 10204 3.1 inspection certification.
Installing a concentric reducer creates a pocket at the top where entrained air collects into a large bubble. When this bubble enters the pump suction eye, it causes instant cavitation and pump de-priming. Installing an eccentric reducer flat-side-up keeps the pipe crown completely flat, preventing air accumulation.
Yes. Indus supplies custom dual-pressure flanged reducers (e.g., small flange PN25 and large flange PN16) engineered specifically for pump discharge manifolds where high pump head transitions to lower pipeline distribution pressure.
Indus stocks all standard flanged reduction steps (e.g., DN150×100, DN200×150, DN250×200, DN300×200, DN400×300, DN500×400, DN600×500) at our Erbil, Baghdad, and Basra facilities for 24-hour dispatch.
