Sarjan Watertech India Pvt. Ltd. Offers Rotary Vane Pump for Commercial Purposes. Sarjan Watertech India Pvt. Ltd. Is an ISO 9001:2000 certified company. Rotary Vane Pump for Commercial Purposes ensure high pumping stability for light gases, low noise, minimal oil back streaming, and a long operating life. Rotary Vane Pump for Commercial Purposes is available with single phase and three phase motors.