Duplex Check Valve

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Iyle Tube Fittings, based in South Africa, is a reputable manufacturer and supplier of top-notch Duplex Check Valves. These valves are designed for reliable, leak-proof, and efficient unidirectional fluid control in various industrial and process piping systems. With a strong focus on precision engineering and durability, the company ensures that its products meet international quality standards, providing valves that boast robust mechanical strength, corrosion resistance, and long-lasting performance. Iyle Tube Fittings’ Duplex Check Valves are widely utilized in the oil and gas, chemical, petrochemical, marine, and power generation sectors, delivering dependable solutions for systems that need safe, efficient, and maintenance-free backflow prevention in challenging operational environments.

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Constructed from duplex stainless steel, Duplex Check Valves offer outstanding corrosion resistance, high tensile and yield strength, and excellent mechanical durability. The precision-engineered internal components, such as the disc and seat, guarantee smooth operation, leak-tight sealing, and reliable performance even under high-pressure and high-temperature conditions. Their sturdy construction ensures dimensional stability, wear resistance, and long-term integrity, making these valves perfect for industrial systems that demand durable, safe, and efficient reverse flow prevention in critical piping networks.

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 South Africa

At Iyle Tube Fittings, we are the leading supplier, manufacturer, and exporter of Duplex Check Valves in South Africa, Cape Town. Our advanced manufacturing facilities, strategically located in the Cape Town, 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 South Africa, Cape Town

Iyle Tube Fittings is a leading supplier and stockist of premium Duplex Check Valves in South Africa, Cape Town. 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 find extensive application in industries that require safe, reliable, and maintenance-free backflow prevention. In the oil and gas sector, they are essential for pipelines, refineries, and offshore systems. Chemical and petrochemical plants depend on them to handle aggressive or high-pressure fluids safely. The marine industry uses them in seawater, ballast, and process systems. Power generation facilities incorporate Duplex Check Valves in cooling, steam, and feedwater lines. Moreover, pharmaceutical, food processing, and industrial process plants also benefit from these valves, ensuring leak-proof and durable performance.