Hydro Prokav Pumps [India] Pvt. Ltd. Manufactures Rotary Lobe Pumps. Hydro Prokav Pumps [India] Pvt. Ltd. Is an ISO 9001 certified company. The Rotary Lobe Pumps are operated with two synchronized rotors which rotate against each other build chambers towards the casing of the pump. These are applied in food and cosmetic products which can be pumped by lobe rotor pumps.