The dry screw pump design is based on the operating principle of screw but with twin screws to achieve the required compression. Two single-pieces, parallel, twin screws contained in a pump body, Compresses & transfers the gas by rotating twin screws. The pump body is cooled by water circulating through a jacket, cooling the compressed gas to discharge at low temperature. The temperature of the pump can be adjusted for process requirements by controlling the water flow rate and temperature. This will raise or lower the overall operating temperature of the gases being pumped. The compression ratio of the pump varies little over the operating pressure range, giving constant absorbed power. This enables the condition of the pump to be diagnosed by monitoring motor current.