Daftar Isi:
  • Gondang dam is a reservoir located on the river Melikan (Garuda), Karanganyar Regency, Central Java. This dam is planned to have a capacity of volume amounting to 9.15 million m2 on an area of 43.86 hectares. This dam was built for the purpose of irrigation rice field of 4,680 hectares (Karanganyar Regency and Sragen), as the raw water supply 200 liters/second, as conservation and sustainability of water, flood control, electricity generation micro hydro 0.2 MW and a new tourist attraction. Gondang dam is constructed on several main components: foundation, body of dams, canals, floodgate, spillway, reservoir, stilling basin and valves. This designing is conducted with an intention of producing Hollow Cone Valve accordingly to the conditions and needs of Gondang dam, Central Java. Data that obtained in this designing are factual. Designing methods that were used are valve concepts planning, valve concepts designing, valve construction designing, and details designing. The valve designing using a 56.5 m valve head results in valve maximum debit value of 5.3008 m3/s with valve total pressure of 56.5 tons/m2 and 3.669,27 kg of valve operating load as well as the required power is 0.75 kW.