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Duplex Steel Check Valves are designed to provide outstanding strength, excellent corrosion resistance, and dependable flow control in some of the toughest industrial settings. Crafted from high-performance duplex stainless steel, these valves boast a balanced austenitic-ferritic microstructure that offers remarkable protection against pitting, crevice corrosion, and stress corrosion cracking caused by chlorides. They are specifically engineered to prevent backflow, ensuring smooth and continuous fluid movement in high-pressure and corrosive environments. Commonly found in offshore industries, chemical plants, desalination facilities, and marine applications, these valves promise a long service life, structural integrity, and reliable performance in critical operations.
Duplex Steel Check Valves are made up of chromium, nickel, molybdenum, and nitrogen, which together provide impressive corrosion resistance and strength. Their unique duplex microstructure results in superior mechanical properties, such as high tensile and yield strength, excellent hardness, and enhanced resistance to stress corrosion cracking. These valves also demonstrate good toughness, fatigue resistance, and stability under high temperatures and pressures. With a high PREN value, the alloy ensures robust resistance to chloride-rich environments. Duplex Steel Check Valves maintain consistent structural performance and durability, making them perfect for demanding industrial applications that require long-term reliability.
| 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 Nasir Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel Check Valve in Manama, Bahrain, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Bahrain, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
Duplex Steel Check Valves are a go-to choice in industries that need reliable backflow prevention, corrosion resistance, and robust mechanical strength. You’ll often find them in offshore oil and gas systems, subsea pipelines, chemical processing facilities, desalination plants, and various marine applications. Thanks to their impressive resistance to chlorides, they’re perfect for seawater cooling lines, high-pressure pumps, and brine handling systems. These valves also play a crucial role in pulp and paper processing, wastewater treatment, fertilizers, and high-temperature industrial operations. Their ability to endure harsh chemicals and extreme pressures makes them essential for safe and efficient fluid control in critical processes.
