Duplex Check Valve

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Curtis Tube Fittings, based in Manila, Philippines, is a leading manufacturer and supplier of high-quality Duplex Check Valves. Renowned for precision, durability, and reliable performance, Curtis Tube Fittings serves industries including oil and gas, petrochemical, water treatment, HVAC, and industrial piping systems. The Duplex Check Valves are manufactured using advanced casting and machining processes, ensuring accurate dimensions, smooth operation, and excellent corrosion resistance. With strict quality control and compliance with international standards, Curtis Tube Fittings delivers valves that provide dependable one-way flow control, making them a trusted choice for businesses seeking high-performance, long-lasting solutions for critical fluid handling applications.

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Duplex Check Valve Specifications
Duplex Check Valve Chemical Composition
Duplex Check Valve Mechanical Properties
Top Duplex Check Valve Manufacturing Company in Manila
Types of Duplex Check Valve
Duplex Check Valve Equivalent Grade
Largest Manufacturer and Supplier of Duplex Check Valve in Manila, Philippines
Duplex Check Valve Uses
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Duplex Check Valves are typically composed of duplex stainless steel, which combines high chromium and nickel content with molybdenum. This composition provides excellent corrosion resistance, high tensile strength, and superior mechanical durability. Duplex stainless steel exhibits enhanced resistance to pitting, crevice corrosion, and stress corrosion cracking, making it ideal for aggressive and high-pressure environments. The valves are engineered for smooth operation, with reliable sealing and minimal leakage. Their combination of strength, corrosion resistance, and durability ensures dependable performance in demanding industrial, chemical, and marine applications where safety and efficiency are critical.

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 Manila

Venton Tube Fittings is the premier supplier, manufacturer and exporter of (Duplex Check Valves) in Manila, Philippines. Our strategic manufacturing units placed in the Philippines allow us to supply high-quality solutions customized to your needs. We value Efficiency and Excellence. Ensuring that our products meet the highest industry standards. Maintaining a well-stocked inventory we are always ready to ship orders in time and reliably. Our dedication to customer satisfaction compels us to deliver strong and reliable solutions for a wide range of industrial uses.

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 Manila, Philippines

Venton Tube Fittings is a trusted and exporter of top-quality(Duplex Check Valves) Philippines. Our products are used widely across diverse industries, proving our commitment to excellence and customer satisfaction. Our unique finishing processes set us apart in the metal istockist ndustry. We assure premier product quality and reliability. Our dedication to innovation and precision, enables us to provide to the evolving needs of our clients while maintaining the highest standards of service.

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

Duplex Check Valve Uses

Duplex Check Valves are widely used across oil and gas, petrochemical, water treatment, HVAC, and industrial piping applications due to their ability to prevent backflow and ensure unidirectional flow. They are ideal for pipelines, pumps, and critical fluid transport systems where high pressure and corrosive conditions are present. Industries rely on these valves to protect equipment, maintain system efficiency, and prevent damage caused by reverse flow. With exceptional durability, corrosion resistance, and precision engineering, Duplex Check Valves provide a reliable solution for controlling fluid flow and ensuring safe, efficient, and long-lasting operation in demanding industrial environments.