Super duplex TTV lugged butterfly valves made from UNS S32750 with a shaft constructed from 904L stainless steel offer exceptional corrosion resistance and mechanical strength, making them well-suited for demanding industrial applications. The use of UNS S32750, a super duplex stainless steel, provides enhanced durability and corrosion resistance compared to conventional stainless steels.

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Key features and benefits of Super Duplex Lugged Pattern Butterfly Valves.

Key Features

The combination of UNS S32750 super duplex stainless steel for the valve body and 904L stainless steel for the shaft results in a dual-material construction that maximises durability.

Key Features

The lugged design of these butterfly valves offers practical advantages in terms of installation and maintenance. Featuring threaded inserts on either side of the valve body, the lugged design allows for direct bolting to the piping system without the need for additional flanges.

Key Features

UNS S32750 provides enhanced strength and corrosion resistance, while 904L stainless steel, known for its resistance to a variety of corrosive media, reinforces the valve shaft. This dual-material approach ensures a robust and reliable performance, even in harsh operating conditions.

All Butterfly Valves come as standard with a Top Notch Lock Plate. Adjustable at set degrees throughout the Valve travel cycle. Are your current supplies as good? We very much doubt it.


Body Material:	UNS S32750
Disc Material:	UNS S32750
Seats Material:	NBR
Shaft Material:	904L
Top Flange Material:	CF8M

Does super duplex rust?

Among the numerous outstanding attributes of super duplex stainless steel, its remarkable corrosion resistance stands out prominently. Additionally, it can withstand temperatures of up to 150 degrees without succumbing to corrosion or cracking.

Is super duplex stainless steel better than SS316?

When comparing super duplex stainless steel to 316, a substantial enhancement in performance is evident. Super duplex stainless steels exhibit three to four times higher yield strength and approximately twice the resistance to pitting corrosion, all while being priced at less than twice the cost.

What is a super duplex?

2205 Stainless Steel surpasses the standard marine grades 316 and 316L, representing a recent advancement over the past 10-20 years by metallurgists. This stainless steel variant not only exhibits superior strength compared to the conventional marine grade 316 but also delivers significantly enhanced corrosion resistance.

What is the pressure rating of super duplex stainless steel?

2507 Super Duplex Stainless Steel Tubes have a tensile strength of 1,00,000 psi and yield strength of 70,000 psi. Super Duplex Welded Pipes are high in demand due to their low cost but are considered weaker compared to the other pipes.

What is the composition of super duplex stainless steel?

Alloy 2507 is a super duplex stainless steel with 25% chromium, 4% molybdenum, and 7% nickel designed for demanding applications which require exceptional strength and corrosion resistance, such as chemical process, petrochemical, and seawater equipment.

What is a duplex valve?

Valves crafted from 2205 Stainless Duplex Steel consist of a duplex-grade steel characterized by both high strength and excellent corrosion resistance, thanks to the presence of austenitic and ferritic phases in its microstructure. This metallurgical composition renders these steels highly versatile for use across a broad spectrum of applications.

What's the difference between duplex and super duplex?

Super Duplex stainless steels incorporate a higher alloying addition of 25% chromium, in contrast to duplex stainless steels, which are based on an alloying addition of 22% chromium. This augmentation in chromium content directly enhances the pitting corrosion resistance of the material.

What are the benefits of Super Duplex?

Super Duplex is a dual-phase alloy consisting of austenitic and ferritic structures, incorporating iron, chromium, nickel, and molybdenum. It exhibits excellent resistance to pitting, impressive tensile strength, and elevated resistance to stress corrosion cracking at moderate temperatures, surpassing conventional austenitic stainless steels in performance.

Is super duplex stainless steel?

Super duplex stainless steel, an extension of duplex stainless steel, distinguishes itself with increased chromium content at 25%, nickel content at 7%, and molybdenum content at 4%. With higher concentrations of these elements, it exhibits superior corrosion resistance compared to standard duplex stainless steel.

Does super duplex corrode?

One standout attribute of super duplex stainless steel is its remarkable resistance to corrosion, allowing it to withstand temperatures of up to 150 degrees without succumbing to corrosion or cracking.

Material	Applications	Temperature
EPDM	Water, Sea Water, Alcohols, Organic Salt Solutions, Mineral Acid Solutions, Mineral Based Alkalines	-20°C +110°C
High Temperature EPDM	Super Heated Water	-20°C +130°C
NBR Buna	Mineral & Vegetable Oils, Gas, Non Aromatic Hydrocarbons, Animal Fats, Vegetable Fats, Air	-10°C +80°C
Hypalon	Mineral Acid Solutions, Organic & In-Organic Acids, Oxidising Solutions	-10°C +80°C
Viton	Acids, Fats, Hydrocarbons, Vegetable & Mineral Oils, Fuels	-5°C +180°C
Polyisoprene	Water, Alcohols, Abrasive Substances (Call To Check), Ketones,	-10°C +60°C
Silicone	Low & High Temperature Resistance Applications	-30°C +150°C
High Temp Silicone	Super Heated Water	-50°C +160°C
Epichlorohydrin	Ozone Resistance, Hydrocarbons, Aromatic Oils	-25°C +145°C