Duplex Check Valve

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Jassem Tube Fittings is a top-notch manufacturer and supplier located in Doha, Qatar, specializing in high-quality Duplex Check Valves that ensure reliable fluid control in industrial systems. With state-of-the-art manufacturing facilities and strict quality control measures, the company creates check valves that effectively prevent backflow, guarantee leak-free performance, and offer long-lasting durability. Jassem Tube Fittings is committed to meeting international standards and customer requirements, delivering valves that can endure tough operating conditions. Catering to the oil and gas, petrochemical, chemical processing, and power industries, the company provides duplex check valves that blend corrosion resistance, strength, and dependable operation throughout Qatar and the Middle East.

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Duplex Check Valves are crafted from duplex stainless steel, which boasts a well-balanced microstructure of austenite and ferrite. This alloy typically includes chromium, nickel, molybdenum, and nitrogen, giving it remarkable corrosion resistance, high tensile and yield strength, along with excellent fatigue and impact resistance. Duplex stainless steel is particularly resistant to stress corrosion cracking and maintains its mechanical stability even under varying pressure and temperature conditions. These characteristics ensure that duplex check valves are not only durable and robust but also capable of delivering reliable performance in demanding industrial settings, including high-pressure and corrosive fluid applications.

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 Doha

At Jassem Tube Fittings, we are the leading supplier, manufacturer, and exporter of Duplex Check Valves in Doha, Qatar. Our advanced manufacturing facilities, strategically located in the Qatar, 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 Doha, Qatar

Jassem Tube Fittings is a leading supplier and stockist of premium Duplex Check Valves in Doha, Qatar. 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 are essential for preventing backflow and ensuring unidirectional flow in critical industrial piping systems. They find common use in oil and gas pipelines, petrochemical plants, chemical processing facilities, water treatment systems, and power generation plants. These valves are designed to handle corrosive fluids, seawater, and high-pressure media with ease. You’ll often see them installed in process lines, pumping systems, and instrumentation setups, making them a vital component in maintaining the efficiency and safety of various industrial operations.