The ball valve uses a through-bored ball that rotates 90° to open or close the flow passage. In the open position, the full bore provides minimal pressure drop. In the closed position, system pressure forces the floating ball against the downstream seat ring, creating a self-energised seal. Ball valves in steel comply with EN 17292 for industrial ball valves.
Fergo offers a comprehensive range. The threaded ball valves KH104/KH105 (brass, PN40, DVGW) and KH109/KH113 (stainless steel, PN63) cover DN8 to DN100. The flanged ball valves KH155 are available in stainless steel, steel and GGG40, DN15–DN300. The weld end ball valves KH154 are fully in stainless steel 1.4408, PN63. The 3-way ball valves KL103/KL113 are available with L-port or T-port bore from DN15 to DN50. All series feature the ISO 5211 mounting interface for pneumatic and electric J4C actuators.
Designed for chemical processing, petrochemicals, power generation, water treatment, food and beverage, HVAC, drinking water and gas supply. A Y-strainer upstream is recommended.