The DRS-Q series is a double acting penstock that is specifically designed to function reliably in an aggressive environment. The structure of the penstock made entirely of stainless steel 316L makes it possible to design it in larger dimensions and at higher pressures. The unique spindle system with internal thread prevents contamination and guarantees low maintenance costs and a long service life. Custom dimensions can be produced on request. According to BS 7775, it is recommended to apply a safety factor of 1.25 to the required torque.