A penstock is a heavy-duty flow control device designed to regulate or isolate water in channels, sewage systems, and industrial environments. It is built from corrosion-resistant materials such as stainless or duplex steel and engineered plastics, ensuring durability and minimal deflection (typically < 2 mm). Seal arrangements meet stringent standards, and leakage rates surpass those set out in AWWA C561. Penstocks can be operated manually, via gearbox, electrically or pneumatically, and are custom-designed for your application.