HG-Stahl Butterfly Valves are designed and manufactured in compliance with API 609, EN 558, and ISO 5752 standards. The leakage tests of the valves are conducted in accordance with EN 12266 or ISO 5208.

As sealing elements for Flanged Butterfly Valves, materials such as PTFE, NBR, CSM, FPM, CR, Q, and NR can be used. Besides these elements, which vary according to the properties of the fluid, HG-Stahl also offers metal-to-metal sealing solutions in its products.

Flanged Butterfly Valves ensure long-term functionality by selecting the right materials, such as stainless steel and its derivatives, based on the acidic properties of the fluid. In addition to standard steel or stainless materials, alternative materials with specific properties can also be requested.

Among these materials, some of the options we can offer to our solution partners include:

  • 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 Alloys (C95800, C95500, C95400, C63200)
  • Aluminum Bronze and Ceramic-Coated Butterfly Valves

With a wide range of material options, HG-Stahl Flanged Butterfly Valves deliver superior performance under various industrial conditions. HG-Stahl Flanged Butterfly Valves stand out with their durability and reliability, even in abrasive and harsh environments. They can be safely used, especially in the chemical, petrochemical, water treatment, and energy sectors.

At HG-Stahl, we offer products such as Concentric Butterfly Valves, Double-Offset Butterfly Valves, and Triple-Offset Butterfly Valves.

Despite their simple structure, butterfly valves provide high performance and reliability. Thanks to modern engineering techniques and advanced material technologies used in their design, these valves offer a wide range of applications in different industrial settings. Butterfly valves are especially preferred for transferring water, gas, and chemicals, standing out with their low maintenance costs and long service life. With their quick opening and closing capabilities, energy efficiency, and operational convenience, butterfly valves are widely chosen by many businesses.

Among HG-Stahl Butterfly Valve products, you can find the most suitable valve for your process requirements.