Indus Industrial Group supplies heavy-duty Triple-Offset Metal-to-Metal Seated High-Pressure Butterfly Valves engineered across nominal diameters from DN150 to DN1600 in pressure classes PN25 and PN40 (ASME Class 150 and 300) according to API 609 and EN 593 standards. Featuring an advanced conical geometry with three distinct shaft and seat offsets, these valves achieve completely frictionless disc rotation until the final point of mechanical contact. Equipped with laminated stainless steel and graphite seal rings seating against solid Stellite body seats, they provide bi-directional zero-leakage shutoff in high-head pumping mains, power plant steam/water circuits, and refinery cooling lines across Iraq.
| Pricing Verification | Commercial Quote on Demand (RFQ) |
| Governing Standards | API 609 Category B / EN 593 / ASME B16.34 / ISO 5208 |
| Nominal Diameter Range | DN150 to DN1600 (Flanged Metric & Inch Standards) |
| Pressure Ratings | PN25, PN40 (ASME Class 150, Class 300) |
| Body Materials | Cast Carbon Steel ASTM A216 WCB / Ductile Iron EN-GJS-500-7 / SS CF8M |
| Body Seat Surface | Hard Stellite Grade 6 Weld Overlay (Cavitation resistant) |
| Disc Seal Ring | Laminated Stainless Steel 316 + Flexible Graphite Interlayers |
| Shaft Material | Precipitation Hardened Stainless Steel 17-4PH / Duplex 2205 |
| Firesafe Compliance | API 607 / ISO 10497 / EN ISO 10497 Certified |
| Flange Drillings | EN 1092-2 / EN 1092-1 / ASME B16.5 Class 150 / 300 |
| Operating Temperature | -29°C to +400°C (Extreme industrial thermal range) |
| Sector & Division | Water & Wastewater (Div 01) |
| Parent Category | Flanged Butterfly Valves |
High-head raw river water pumping mains, thermal power plant boiler feed and cooling lines, oil refinery water circuits, deep reservoir dam outlet works, and surge-sensitive high-pressure municipal mains across Baghdad, Erbil, Basra, Baiji, and Wasit.
Triple-Offset Metal-Seated Butterfly Valves (TOV) represent the pinnacle of rotary valve engineering for severe-service, high-pressure water conveyance, thermal power generation, and oil & gas facilities across Iraq. In demanding applications where working pressures reach 25 to 40 Bar, fluid temperatures exceed standard elastomeric limits, or abrasive river sand rapidly destroys rubber seals, conventional resilient-seated butterfly valves suffer catastrophic failure. The triple-offset geometry eliminates all sliding friction: Offset 1 places the shaft behind the seat plane; Offset 2 offsets the shaft from the pipe centerline; Offset 3 angles the seat cone axis away from the pipe axis, transforming the sealing contact into a right-angle mechanical wedging action with zero rubbing.
The valve body is cast from high-tensile ductile iron (EN-GJS-500-7), cast carbon steel (WCB), or stainless steel (CF8M) with an integrally welded hard Stellite alloy body seat. The seal ring mounted on the disc consists of multi-layer laminations of stainless steel (AISI 316) interleaved with high-purity graphite, delivering certified bi-directional zero leakage (Rate A per ISO 5208 and API 598) and firesafe certification (API 607). The one-piece high-strength stainless steel shaft (17-4PH / AISI 431) features blow-out proof design.
Operated by enclosed heavy-duty worm gearboxes or electric/pneumatic actuators, the valve opens and closes with exceptionally low torque and zero seal wear. Staged at our Erbil Heavy Plant Yard, Baghdad Central Logistics Depot, and Basra Port Hub, Indus supplies triple-offset butterfly valves with full EN 10204 3.1 material test certificates, firesafe certificates, and hydrotest logs.
The three distinct angular and axis offsets create an elliptical, conical sealing path. The disc seal only contacts the seat at the exact point of final mechanical closure. Because there is zero rubbing during opening or travel, the metal seal will not gall, wear, or degrade, lasting decades in harsh abrasive Iraqi water.
Yes. Indus triple-offset valves are engineered with symmetrical sealing profiles that achieve certified bi-directional zero leakage (Rate A per ISO 5208) holding full rated pressure (25 or 40 Bar) from either side.
Every valve is delivered with an authentic EN 10204 3.1 Mill Test Certificate, hydrostatic pressure test report, API 607 firesafe certificate, and torque calculation sheet for actuator verification.
