Special Design Butterfly Valves, also referred to as Tailor Made Butterfly Valves, are specially designed and manufactured according to your process. These valves can feature different valve lengths, special valve control systems, special sealing elements, or products made of special materials.

Depending on the connection types, our butterfly valves are available in flanged or wafer options, and the designs are made in compliance with API 609, EN 558, and ISO 5752 standards. In Special Design Butterfly Valves, materials and thicknesses far beyond the standard can be used. To determine these accurately, design validations are carried out using CAE simulations with the finite element method. Leakage tests of the valves can be performed according to EN 12266 or ISO 5208.

Special Design Butterfly Valves are designed to operate for many years by selecting the right material, such as stainless steel or its derivatives, according to the acidic value of the fluid. Besides standard steel or stainless steel materials, materials with different properties can also be requested.

HG-Stahl’s Special Design Butterfly Valves are ideal for industrial applications with high precision and special requirements. HG-Stahl Butterfly Valves are customized to meet customer needs and provide high performance, durability, and a long service life. These valves enhance reliability by operating flawlessly even under the most challenging conditions.

Special Design Butterfly Valves are engineered to deliver superior performance, especially in complex and demanding industrial environments. Their high temperature and pressure resistance, chemical resistance, and excellent sealing properties make them reliably usable in sectors such as petrochemicals, energy, water treatment, and mining. Optimized with modern engineering techniques, these valves increase process efficiency while reducing maintenance costs. Special Design Butterfly Valves also include high-performance butterfly valves.

Among the materials we can offer to our solution partners are Titanium Alloys (Titanium Gr.2, Gr.3, Gr.5, Gr.6, Gr.7, Gr.12), Zirconium Alloys (Zirconium 702, 705), Bronze Alloys (C95800, C95500, C95400, C63200), Nickel Alloys (Inconel 600, 625; Hastelloy B, B-2, B3, C276, C-22, C-4, G; Incoloy 800, 800H, 825; Monel 400, K500; Nickel 200, 201), Duplex Stainless Steel Alloys (C95800, C95500, C95400, C63200), Aluminum Bronze, and Ceramic Coated Butterfly Valves.

Special Design Butterfly Valves can be produced in soft-seated or metal-seated forms. This variety allows butterfly valves to be used in different industrial applications and provides solutions suitable for all types of process needs.

At HG-Stahl, we design and manufacture butterfly valve products such as Concentric Butterfly Valves, Double-Offset Butterfly Valves, Triple-Offset Butterfly Valves, Wafer-Style Butterfly Valves, Lug-Style Butterfly Valves, Double-Flanged Butterfly Valves, and Butt-Weld Butterfly Valves.

These tailor-made butterfly valves are offered to our end-users in a way that suits your process.