Super Duplex Check Valve

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Paul Tube Fittings is a top-rated USA-based manufacturer of premium quality Duplex Check Valves. With its track record of excellence and precision engineering, the company has been providing dependable valve solutions meant to satisfy stringent industrial applications. Specializing in manufacturing corrosion-resistant, long-lasting Duplex Check Valves suitable for high-pressure conditions, their products are relied upon by various industries for their reliability and adherence to international standards. Supported by highly experienced staff and a quality commitment, Paul Tube Fittings delivers customer satisfaction through high-quality products and prompt delivery throughout the United States and worldwide.

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Duplex Check Valves are made of Duplex stainless steel, normally UNS S31803 or S32205. The alloy presents an equal microstructure of austenite and ferrite, providing high strength and corrosion resistance. Mechanical properties are a tensile strength of 620 MPa (min) and yield strength of 450 MPa (min), and elongation of 25% with hardness up to 290 HB. The composition generally consists of 22% Chromium, 5-6% Nickel, 3% Molybdenum, and controlled Nitrogen. These properties provide strength, stress resistance corrosion cracking, and suitability in tough, high-pressure environments.

Super Duplex Check Valve Specifications

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

Super Duplex Check Valve Chemical Composition

Mn	C	Fe	P	Si	Cr	S	Ni	Mo	N
1.20 max	0.030 max	58.095 min	0.035 max	0.80 max	24.00 – 26.00	0.020 max	6.00 – 8.00	3.00 – 5.00	0.24 – 0.32
1.00 max	0.05 max	57.61 min	0.030 max	1.00 max	24.00 – 26.00	0.010 max	6.00 – 8.00	3.00 – 4.00	0.20 – 0.30

Super Duplex Check Valve Mechanical Properties

Melting Point (°F)	Melting Point (°C)	Density (g/cm 3)	Density (lb/in 3)
2460	1350	7.8	0.0281

Top Super Duplex Check Valve Manufacturing Company in Houston

At Paul Tube Fittings, we are the leading supplier, manufacturer, and exporter of Super Duplex Check Valves in Houston, USA. Our advanced manufacturing facilities, strategically located in the USA, allow us to deliver high-quality, customized solutions that meet your specific requirements. With an extensive inventory of over 16,000 tons of premium-grade Super Duplex materials, we are fully equipped to meet your demands efficiently. Our commitment to excellence and operational efficiency ensures that we consistently maintain sufficient stock to support your business needs, providing reliable solutions for demanding applications.

Types of Super Duplex Check Valve

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Super Duplex Check Valve Equivalent Grade

STANDARD	WERKSTOFF NR.	UNS
Super Duplex 2507	1.4410	S32750 / S32760

Largest Manufacturer and Supplier of Super Duplex Check Valve in Houston, USA

Paul Tube Fittings is a leading supplier and stockist of premium Super Duplex Check Valves in Houston, USA. Our products are widely utilized across various industries, and we are dedicated to delivering exceptional service while ensuring complete customer satisfaction. With our advanced finishing techniques, we stand out in the metal industry. We are committed to consistently providing top-quality Super Duplex Check Valves while efficiently meeting the diverse needs of our clients, ensuring reliability and durability in challenging applications.

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

Super Duplex Check Valve Uses

Duplex Check Valves are widely applied in applications requiring high corrosion resistance and strength, including oil and gas, chemical processing, desalination, and marine industries. They are used to prevent backflow in pipelines, safeguard pumps and compressors, and ensure pressure integrity in high-temperature and high-pressure systems. Their ability to resist chloride stress corrosion and erosion makes them perfectly suited for offshore platforms and subsea conditions. In addition, they are widely used in power generation facilities, wastewater treatment plants, and petrochemical facilities. Paul Tube Fittings’ Duplex Check Valves provide long-term reliability and safe operation within the toughest industrial processes.