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The AVDM-250 high-vacuum unit is a structure consisting of a vacuum diffusion oil-vapor pump, a nitrogen trap, a vacuum gate, a frame or a plate. The principle of operation of the AVDM-250 unit is based on the pumping action of a vacuum diffusion steam oil pump. When the AVDM-250 unit is operating, liquid nitrogen is poured into the trap. Condensation of working fluid vapors occurs on the elements of the freezing device cooled with liquid nitrogen. The frame (plate) is designed for mounting the components of the unit. The ends of the wires are connected to a connector mounted on the frame of the AVDM-250 unit.

The AVD-50/16 unit consists of a NVD-200 series-connected two-rotor vacuum pump and a 2NVR-60D plate-rotor vacuum pump. The pumps are connected to each other by means of an adapter, which acts as both a pipeline and a support unit. The AVD-50/16 unit can operate continuously at an inlet pressure of no more than 133 Pa (1 mm Hg) or pumping out one or more sealed vessels with a total volume of 3.5 m3 from atmospheric to maximum residual pressure for 8 hours.

The AVB-3 vacuum water ring unit consists of a 3BBH1-3M vacuum water ring pump and an EV-3M water ring vacuum ejector.

The AVDM-160 high-vacuum unit consists of a vacuum diffusion oil-vapor pump, a nitrogen trap, a vacuum gate, a frame or a plate. The principle of operation of the AVDM-160 unit is based on the pumping action of a vacuum diffusion steam oil pump. When the AVDM-160 unit is operating, liquid nitrogen is poured into the trap. Condensation of working fluid vapors occurs on the elements of the freezing device cooled with liquid nitrogen. The frame (plate) is designed for mounting the components of the unit. The ends of the wires are attached to the connector fixed on the plate of the AVDM-160 units.

The AVB-12 vacuum water ring unit consists of a 3BBH1-12M vacuum water ring pump and an EV-12 water ring vacuum ejector.

The AVD-150/63 unit consists of a series-connected two-rotor vacuum pump NVD-600 and a 2NVR-250D plate-rotary vacuum pump. The pumps are connected to each other by means of an adapter, which acts as both a pipeline and a support unit. The AVD-150/63 unit can operate continuously at an inlet pressure of no more than 133 Pa (1 mm Hg) or pumping out one or more sealed vessels with a total volume of 17.5 m3 from atmospheric to maximum residual pressure for 8 hours.

The AVB-25 vacuum water ring unit consists of a 3BBH1-25 vacuum water ring pump and an EV-25 water ring vacuum ejector

The AVDM-100 high-vacuum unit consists of a vacuum diffusion oil-vapor pump, a nitrogen trap, a vacuum gate, a frame or a plate. The principle of operation of the AVDM-100 unit is based on the pumping action of a vacuum diffusion steam oil pump. When the AVDM-100 unit is operating, liquid nitrogen is poured into the trap. Condensation of working fluid vapors occurs on the elements of the freezing device cooled with liquid nitrogen. The frame (plate) is designed for mounting the components of the unit. The ends of the wiring wires are connected to the connector fixed on the plate of the AVDM-100 unit.

The AVB-50 vacuum water ring unit consists of a 3BBH2-50 vacuum water ring pump and an EV-50 water ring vacuum ejector

The AVD-50/5 unit consists of a NVD-200 series-connected two-rotor vacuum pump and a 2NVR-5DM plate-rotor vacuum pump. 2NVR-5DM and NVD-200 pumps are installed on the lower and upper base of the frame and secured with bolts, nuts and washers. The pumps are connected to each other by means of a pipeline and a bellows assembly. By installing the rings during assembly of the unit, the size of the bellows assembly is set. The AVD-50/5 unit can operate continuously at an inlet pressure of no more than 133 Pa (1 mm Hg) or pumping out one or more sealed vessels with a total volume of 3.5 m3 from atmospheric to maximum residual pressure for 8 hours.