Duplex Check Valve

Home > Duplex Steel > Duplex Check Valve

Max Tube Fittings, a Delhi, India-based quality-focused manufacturer, provides high–quality Duplex Check Valves for industrial fluid control systems that have high corrosion resistance and mechanical strength requirements. Specifically made for non-return flow operations, these valves are built with Duplex stainless steel, fusing strength and corrosion resistance in the same material. Max Tube‘s duplex check valves prove to be extremely efficient in severe service conditions including offshore, chemical, and desalination plants. With a design emphasis on durability, sealing tightness, and pitting and stress corrosion resistance, these valves ensure long-term service in aggressive media, high-pressure environments, and hence Max Tube as an industry-friendly partner.

Duplex Swing Check Valve Supplier in Delhi, Duplex Check Valve Supplier Price List in Delhi, Duplex Inline Check Valve Manufacturer in Delhi, Duplex Socket Weld Check Valves In India, Duplex Swing Check Valves, Duplex Socket Connect Check Valves Price Exporter in Delhi, Duplex Check Valve Manufacturer in India, Duplex Socket Weld Check Valve in Delhi, India.

Max Tube Duplex Check Valves are constructed from Duplex Stainless Steel (grades such as UNS S31803 or S32205), which has high tensile strength (~620 MPa) coupled with excellent corrosion resistance, particularly to chlorides and acidic conditions. The valves are resistant to working pressures up to 6000 psi and temperatures up to 260°C. The valve design comprises precision-machined seating, corrosion-resistant springs, and strong sealing elements. Duplex steel has dual-phase microstructure, thus having more resistance to fatigue as well as providing excellent mechanical integrity. Each valve is checked on backflow prevention, leakage, and dimensions as per API/ASME standards.

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 Delhi

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

Duplex Check Valve, Duplex Swing Check Valve in Delhi, Duplex Sanitary Check Valve Price in Delhi, Duplex Socket Weld Check Valves Supplier in Delhi, Duplex Piston Check Valve Manufacturer in Delhi, Duplex Poppet Check Valve Price in India, Duplex Swing Check Valves Supplier and Manufacturer in India, Duplex Inline Check Valve in Delhi, India.

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 Delhi, India

Max Tube Fittings is a leading supplier and stockist of premium Duplex Check Valves in Delhi, India. 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

Applications of Duplex Check Valves include those sectors where mechanical strength as well as supreme corrosion resistance is important. Such applications include oil & gas offshore platforms, chemical processing plants, desalination units, marine systems, and power plants. These check valves ensure against backflow in fluid lines, safeguarding pumps, compressors, and instrumentation from backward pressure surges. Their duplex steel design suits them for chloride-containing or acidic fluids, high-pressure pipes, and corrosive industrial settings. These valves provide security and efficiency in seawater, brine, or chemical solution service systems, providing a reliable non-return flow control solution for demanding services.