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Al Vishwas Nickel Alloys is a highly regarded manufacturer and supplier located in Dubai, UAE, that focuses on producing premium Duplex Steel Check Valves built for demanding industrial uses. Known for its precise manufacturing, strict quality control, and reliable product performance, the company provides solutions that meet international engineering and safety standards. Their Duplex Steel Check Valves are engineered to deliver exceptional corrosion resistance, longevity, and operational efficiency, even under difficult conditions. Dedicated to customer satisfaction and technical excellence, Al Vishwas Nickel Alloys continues to be a trusted partner for industries requiring dependable flow-control products, guaranteeing durable performance and reliability.
Duplex Steel Check Valves are made from a precisely balanced blend of roughly 22–25% chromium, 5–7% nickel, 3–4% molybdenum, together with regulated nitrogen content. This distinctive two-phase ferritic-austenitic composition delivers outstanding protection against pitting, crevice corrosion, and stress corrosion cracking. From a mechanical standpoint, Duplex Steel features strong tensile and yield strength, superb fatigue resistance, and notable impact toughness, even at low temperatures. These properties allow the check valves to operate dependably under high pressure, varying temperatures, and corrosive environments, rendering them considerably stronger and more durable than many conventional stainless steel alternatives.
| Pressure rating | 150#,300#,600#,800#,1500# |
| Standards | API 600/BS1414,ASME B 16.25, ASME B 16.10, ASME B 16.5, API 598/BS EN 12266-1,ASME B 16.34 |
| End Connection | Flanged End,Screwed [NPT],Screwed Taper,Socket Weld, Screwed Parallel |
| Size | 1/8” to 16” |
| Grade | C | Mn | S | Cr | Si | P | Mo | Ni | Fe | N |
| Duplex Steel Check Valve | 0.030 max | 2.00 max | 0.020 max | 22.0–23.0 | 1.00 max | 0.030 max | 3.0–3.5 | 4.50–6.50 | 63.72 min | 0.14–0.20 |
| Grade | Density (g/cm 3) | Melting Point (°F) | Density (lb/in 3) | Melting Point (°C) |
| Duplex Steel Check Valve | 7.805 | 2588 – 2669 | 0.285 | 1420 – 1465 |
At Al Vishwas Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel Check Valve in Dubai, UAE, delivering advanced solutions for every one of your piping requirements. Our cutting-edge manufacturing facilities are strategically situated in the UAE, enabling us to keep an extensive stock of more than 16,000 tons of high-quality materials always available on hand. We are committed to providing exceptional products and services, guaranteeing dependability and excellence for our worldwide customers.
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Duplex Steel Check Valves are widely applied across industries that demand reliable flow control and resistance to corrosion. Within the oil and gas sector, they frequently appear on offshore platforms, pipelines, and processing units exposed to severe, chloride-heavy conditions. Chemical and petrochemical facilities rely on these valves for reactors, pressure systems, and chemical transfer lines that call for sturdy, leak-proof performance. They are equally vital in desalination plants, water treatment facilities, and numerous other settings where dependability and longevity are of the utmost importance.
