Duplex Check Valve

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Ayten Tube Fittings, a well-respected manufacturer and supplier located in Addis Ababa, Ethiopia, specializes in high-quality Duplex Check Valves that are built to last. These valves are designed to resist corrosion and ensure efficient fluid control, allowing flow in one direction while automatically blocking any backflow. This guarantees smooth and safe operation within your systems. Crafted from top-notch Duplex Stainless Steel, they excel in high-pressure and corrosive environments. Ayten’s Duplex Check Valves are meticulously engineered for various industries, including oil and gas, petrochemical, chemical processing, marine, and power generation, offering long-lasting reliability, leak-proof performance, and low maintenance even in tough industrial settings.

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These Duplex Check Valves are made up of 22–25% chromium, 5–7% nickel, 3% molybdenum, and a touch of nitrogen to boost their strength and resistance to corrosion. Their unique duplex microstructure (ferritic-austenitic) provides impressive tensile strength (up to 750 MPa) and yield strength around 450 MPa, along with outstanding resistance to pitting, crevice corrosion, and chloride stress cracking. These valves maintain their shape and structural integrity even under extreme pressure and temperature changes. With their mechanical toughness and exceptional corrosion resistance, they are perfect for handling aggressive fluid systems and demanding industrial operations.

Duplex Check Valve Specifications

INSTRUMENTATION VALVES MATERIAL	DUPLEX 2205
INSTRUMENTATION VALVES SIZE	6 MM TO 50 MM and 1/8″ TO 2″
PATTERN FLOW	STRAIGHT
THREADS	BSPP, NPT, METRIC, BSPT,UNF, JIC
INSTRUMENTATION VALVES ORIFICE SIZE	2 MM – 40 MM
CONNECTION	SOCKET WELD END, TUBE END, THREADED, FLANGE END
INSTRUMENTATION VALVES BODY SHAPE	HEXAGON
EQUIVALENT BRANDS	PARKER, SWAGELOK, DK-LOK, STAUFF, OLIVER VALVES, HAMLET, HOKE
CRACKING PRESSURE	0.5 BAR
TYPE	SPRING TYPE, POPPET TYPE
RATING PRESSURE	20000 PSI, 1500 PSI, 10000 PSI, 3000 PSI, 6000 PSI, 15,000 PSI
MEDIA TEMPERATURE	(-50* C – 350*C ) AS PER PRESSURE RANGE
MEDIA	SEA WATER , HYDRAULIC AIR, OIL, GAS, WATER, HOT WATER , STEAM, COLD WATER , CHEMICAL
BODY TYPE	FORGED, BAR STOCK
INSTRUMENTATION VALVES PACKING DETAILS	WOODEN PALLET, BOX PACKING

Duplex Check Valve Chemical Composition

ELEMENT	DUPLEX 31803	DUPLEX 2205
C	0.030 max	0.030 max
NI	4.50 – 6.50	4.50 – 6.50
MN	2.00 max	2.00 max
S	0.020 max	0.20 max
FE	63.72 min	63.54 min
P	0.030 max	0.030 max
SI	1.00 max	1.00 max
MO	3.0 – 3.5	2.50 – 3.50
CR	22.0 – 23.0	21.0 – 23.0
N	0.14 – 0.20	0.08 – 0.20

Duplex Check Valve Mechanical Properties

Grade	Hardness(BHN)	UTS (MPa)	YS (MPa)	% Elongation
2205	293 max.	655 min.	450 min.	25 min.
31803	293 max.	620 min.	450 min.	25 min.

Top Duplex Check Valve Manufacturing Company in Addis Ababa

At Ayten Tube Fittings, we are the leading supplier, manufacturer, and exporter of Duplex Check Valves in Addis Ababa, Ethiopia. Our advanced manufacturing facilities, strategically located in the Ethiopia, allow us to deliver high-quality, customized solutions tailored to your specific needs. With an extensive inventory of over 16,000 tons of premium-grade duplex stainless steel materials, we are fully equipped to meet your demands efficiently. Our commitment to excellence and efficiency ensures that we consistently maintain sufficient stock to support your business requirements and provide reliable performance in critical applications.

Types of Duplex Check Valve

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Duplex Check Valve Equivalent Grade

STANDARD	UNS	WERKSTOFF NR.
Duplex 2205	UNS S31803 / UNS S32205	1.4462 / 1.4462

Largest Manufacturer and Supplier of Duplex Check Valve in Addis Ababa, Ethiopia

Ayten Tube Fittings is a leading supplier and stockist of premium Duplex Check Valves in Addis Ababa, Ethiopia. Our products are widely used across various industries, and we are dedicated to delivering exceptional service while ensuring complete customer satisfaction. With our advanced finishing techniques, we differentiate ourselves in the metal industry. We are committed to consistently providing top-quality Duplex Check Valves while efficiently meeting the diverse needs of our clients, ensuring reliability and durability in demanding applications.

We offer These Products as per DIN, ISO, JIS or ANSI Standard.

Duplex Check Valve Uses

Duplex Check Valves play a crucial role in various industries, including oil refineries, offshore platforms, chemical plants, power generation systems, water treatment facilities, and marine engineering. They effectively prevent reverse flow in pipelines that transport liquids, gases, steam, and other process media, which is essential for maintaining safety and efficiency in these systems. These valves shine in high-pressure and high-temperature settings, where issues like corrosion and mechanical stress can arise. Ayten’s Duplex Check Valves are perfect for pumping systems, cooling circuits, and process control pipelines, providing reliable one-way flow control, minimizing maintenance needs, and ensuring a long service life even in harsh, corrosive, and high-stress industrial environments.