High Vacuum pumps

Model : OD-65D, OD 80, OD-114D, OD-150D, OD-250D, OD 500, OD 350 , OD 1000

HHV’s  Diffstack Pumps are designed and manufactured to suit the needs of both industrial and laboratory applications. These Diffstack pumps are offered in sizes  65 mm, 114 mm, 150 mm,  250 mm , 500 mm and 1000 mm diameters. The superior pumping speed of Diffstack Pumps makes them exclusively suitable for Vacuum Furnaces, Space Research, vacuum coating of lenses, Thin Film Deposition and several other industrial applications. These pumps are capable of achieving vacuum in the range of 10^-6 to 10^-7 m.bar.

The main body is fabricated from stainless steel in the shape of a cylinder and water cooling copper coils are wrapped around the body.

The jet assembly consists of metallic nozzles aimed downwards facing the pump inner body so as to cool the vapor molecules emerging from these nozzles. The oil boiler, with external flat type heating coil for burst free evaporation, is located at the bottom of the pump and it holds specified quantity of oil for efficient working of the pump. An ultimate vacuum in the range of 5 x 10^-7 m.bar can be achieved by using Dow Corning 704 Silicon Fluid, as this fluid does not oxidize by air and is chemical resistance which eliminates frequent replacements.

These pumps are built in with water cooled cap over the jet assembly so as to trap the back streamed oil vapors thus producing clean and better ultimate vacuum over conventional Diffusion pump. Other features is, pump is built in with High vacuum valve such that it can be used as high vacuum pumping unit with suitable backing pump.