Fully welded gate valves - Type S43.3

  • Fully welded gate valve design
  • Non-rising stem
  • Underground design

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Fully welded gate valves of type S43.3 are designed for use in a range of pipe diameters (DN 50-400) and pressure ratings (PN 16-100). These valves feature a non-rising stem and an underground design, with options for welded or flanged connections. They are constructed from various materials, including A350 LF2, A694 F52, and Stellite, ensuring durability and performance in temperatures ranging from -46°C to 100°C. The valves are suitable for applications requiring reliable shut-off and flow control, with specific dimensions and weights provided for different sizes. The valves are available with handwheel and gear options, and are ideal for use in environments where reliable and durable shut-off is essential.

Use Cases

  • Typically used in hydrogen and related industrial applications.

Capabilities

  • Designed for DN 50–400 pipeline sizes
  • Supports pressure ratings PN 16–100
  • Operates with medium temperatures from -46 °C to 100 °C
  • Supports welded end connections (EN 12627) and optional flanged connections (EN 1092-1)
  • Available with handwheel or gear actuator depending on size
  • Constructed with materials including A350 LF2, A694 F52, and Stellite overlays for mechanical durability
Vexve Oy Vexve Oy is a manufacturing company specializing in valves for energy infrastructure and is developing hydrogen-ready flow-control solutions. The company’s broader business is based on fluid-control components and application engineering, with equipment selected according to media compatibility, pressure and temperature range, leakage requirements, connection standard, actuation, and the architecture of the surrounding system. The business is mainly B2B and specification-driven, with components selected or engineered to match the operating conditions and standards of the surrounding hydrogen equipment or plant. For hydrogen, the company applies this flow-control expertise to the specific valves, regulators, fittings, manifolds, or related assemblies identified in its hydrogen offering, rather than to hydrogen production as a standalone activity. Its welded ball and butterfly valves can be adapted for hydrogen distribution and sector-coupling networks. The company brings district-energy and gas-valve manufacturing expertise to emerging hydrogen pipeline infrastructure. Within the hydrogen value chain, Vexve Oy therefore serves mainly as a component supplier to equipment OEMs, plant builders, gas-system integrators, test facilities, and infrastructure operators.

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