New Un-Used Howden WVR-Series Rotary Screw Compressor. Model: MK1G/WRV16318036. S/N: 1441. Contract No: J05319 R16505-1DMN. Hydraulic test pressure: 609 psig. Maximum working pressure lo/hi: 50/260 psig. Rotor diameter: 64.25 in. L/D Ratio: 1.8. Built-in volume ratio: 3.6. The Howden WRV oil injected compressor is a positive displacement, capacity controlled, oil flooded, rotary machine. Compression is achieved by the meshing of two helical rotors on parallel shafts. The male rotor has four lobes which mesh with six flutes in the female rotor, both rotors having the same outside diameter. Capacity control is achieved by means of a slide valve in the casing operated by a piston in a hydraulic cylinder mounted on the compressor. Overall dimensions: 45 in. L x 21 in. W x 22 in. H. (ACN258a)