Penstock

Penstocks are intake valves to control the flow of water in water supply, hydroelectric power and sewerage systems. Penstocks are normally equipped with a gate system and a surge tank. Flows are large with a major portion of the water supply flowing through the penstock system. Flow in penstocks is regulated by turbine operation and is nil when turbines are not in service. Control strategies include hot water wash, manual cleaning, antifoulant coatings, and desiccation.