Pelton Wheel or Pelton Turbine is a Tangential Flow Impulse Turbine. This Turbine is used for High Heads and is named after L.A.Pelton. The water strikes the bucket along the tangent of the tangent of the runner. The energy available at the inlet of the turbine is only Kinetic Energy. The pressure at the inlet and outlet is atmospheric pressure. The nozzle increases the kinetic energy of the water flowing through the penstock. At the outlet of the nozzle, the water comes out in the form of a jet and strikes the buckets (vanes) of the runner. Pelton Wheel Turbine is used for High Heads. Pelton Wheel Turbine has a Specific Speed less than 30(S.I) for single jet and between 30 and 60 (S.I) for multi-jet.