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The operation of the NVDM-250 diffusion pump is based on the capture and transfer of the pumped gas by a steam jet flowing from the slit gaps of the steam line nozzles towards the outlet flange. The oil reflector of the NVDM-250 diffusion pump is a flange with a cooling tube passing through it, soldered to a cap located in the center of the flange. The NVDM-250 open-type diffusion pump heater is a metal housing with a ceramic base laid in it with a heating element in the form of a spiral made of nichrome wire. During the operation of the pump, it is necessary to monitor the flow rate and temperature of the cooling water, the level of the working fluid and its temperature. Replacement or refilling of the working fluid depends on the operating mode of the pump (inlet pressure, pumping duration, etc.) and the composition of the pumped medium. Therefore, the time after which the working fluid is replaced or refilled can be from 100 to 1000 or more hours. A large flow rate of the working fluid is observed when the pump is operating in the range of inlet pressures from 6.6 × 10-2 to 13.3 Pa (from 5 ×10-4 to 1 ×10-1 mmHg). Water at the inlet to the cooling systems of the housing and oil reflector must be supplied with a pressure of no more than 0.5 MPa (5 kgf / cm2) and temperature from plus 4°C to plus 25°C. The recommended cooling water consumption is 100+15 l/h and is regulated by the outlet water temperature, which should not exceed plus 400C. The water drain should be free (with a jet break). Not allowed: operation of the pump without water cooling, exceeding the maximum exhaust pressure of 33.3 Pa (0.25 mmHg) The level of the working fluid during operation, at which the parameters of the pump NVDM-250 are provided, must correspond to min 8mm, max 13mm. The volume of the filled working fluid is 0.55 l

The 2NVR-5DG UM4 pump is manufactured in the climatic version of UM 4 (i.e. for moderate climate) according to GOST standard 15150-69, but to be used at ambient temperature and pumped medium 283 K to 308 K (+10˚C to +35˚C). Electricity grid must meet the requrimemnts of GOST 13109-97. The 2NVR-5DG vacuum rotary vane pump meets the requirements of technical specifications TU 3648-006-00218526-2002. The 2NVR-5DG pump is refueled with VACMA OIL 100 working fluid. Monitoring of the level of the working fluid is ensured by the oil indicator, replenishment is neede when the level of the working fluid is below the minimum level of the oil indicator.

The complex includes: VEGA ProVac 2000 turbomolecular high vacuum pump; frequency converter; a set of mounting parts. For connection to the pre-vacuum pumping system, the pump is equipped with an ISO-KF40 exhaust flange. Pump cooling is combined. Based on the operating conditions, the complex can work both with forced air cooling and with water cooling. The working orientation in space is vertical.

Our company produces water-jet pumps not only according to our drawings, but also according to the customer’s drawings and technical specifications. How to order The Primelab water jet pump is an effective and simple device that allows you to pump out air from a desiccator, small reactor or evaporator, and organize the functioning of a vacuum line. It does not require electricity to operate, just connect to the water supply. The product is made of high quality heat-resistant tempered glass. The upper outlet is connected to the water supply using a flexible hose; water will be drained through the lower outlet. The side outlet is connected to the device in which it is necessary to create a vacuum. The pump is installed vertically. Tap water is supplied from top to bottom. The upper part of the pump gradually narrows, increasing the speed of water flow. The jet exits the nozzle at the central expansion. According to the laws of physics, as the speed of water flow increases, the pressure drops. Therefore, a vacuum is formed in the central expansion, which draws in air from the side outlet. This air is entrained by the falling water into the lower outlet tube. In this way, air is pumped out from the device or vessel connected to the pump.

the 2NVR-250D vacuum pump is manufactured in the climatic version of UM 4 (i.e. for moderate climate) according to GOST standard 15150-69, but to be used at ambient temperature and pumped medium 283 K to 308 K (+10˚C to +35˚C). Electricity grid must meet the requrimemnts of GOST 13109-97. The 2NVR-250D vacuum rotary vane pump meets the requirements of technical specifications TU 3648-006-00218526-2002. The 2NVR-250D pump is refueled with VACMA OIL 100 power fluid. The level of the working fluid is monitored by the oil indicator, replenishment is needed when the level of the power fluid is below the minimum level of the oil indicator.

The PL.HM03.01.60 Primelab vacuum diaphragm pump is suitable for creating a vacuum up to 60 mbar and a flow rate of 38 l/min. It has a dry design that does not require lubrication. Quite easy to use and does not create any inconvenience during operation. Its noise level does not exceed 75 dB. With a light weight of 6.9 kg, it has compact dimensions (289.5x160x200 mm), allowing the pump to be integrated into an already equipped space. Complies with IP20 protection class. The PL.HM03.01.60 Primelab vacuum diaphragm pump is supplied in the following package: vacuum pump, cable, instructions, passport, packaging (vacuum regulator and spare parts are not included in the kit and must be ordered separately). Warranty and post-warranty service is available in Russia.

Pumping out steam-gas mixtures is allowed only when the gas-ballast device is open. The NVR-4,5D vacuum plate-rotary pump is manufactured in the climatic version of UHL 4 (i.e. for moderate and cold climate) according to GOST standard 15150-69, but to be used at ambient temperature and pumped medium 283 K to 308 K (+10˚C to +35˚C). It meets the requirements of technical specifications TU 3648-006-00218526-2002, designed and manufactured taking into account the requirements of GOST R 52615-2006. The quality of electricity grid must meet the requirements of GOST 13109-97.

The use of a 2VVN1-12M(H) water-ring vacuum pump for pumping out water-gas mixtures is allowed only if the bulk of the water is separated and discharged at the pump entrance. Failure to comply with this requirement may lead to unacceptable overload of the electric motor and destruction of the working parts of the 2VVN1-12M(N) pump. The 2VVN1-12M(N) vacuum water ring pump is manufactured in the climatic version of UHL 4 and O4 (i.e. for moderate and cold climate) according to GOST standard 15150-69, meets the requirements of technical specifications TU 3648-015-00218526-2000, designed and manufactured taking into account the requirements of GOST R 52615-2006. The quality of electricity must meet the requrimemnts of GOST 32144-2013.

The use of a 2VVN2-50(H) water-ring vacuum pump for pumping out water-gas mixtures is allowed only if the bulk of the water is separated and discharged at the pump entrance. Failure to comply with this requirement may lead to unacceptable overload of the electric motor and destruction of the working parts of the 2VVN2-50(H) pump. The 2VVN2-50(H) vacuum water ring pump is manufactured in the climatic version of UHL 4 and O4 (i.e. for moderate and cold climate) according to GOST standard 15150-69, meets the requirements of technical specifications TU 3648-015-00218526-2000, designed and manufactured taking into account the requirements of GOST R 52615-2006. The quality of electricity must meet the requrimemnts of GOST 32144-2013.

The chemical-resistant diaphragm pump PL.HM03.01.45 is designed for a wide range of industrial and laboratory tasks, mainly related to pumping vapors/gases. The pumping speed is 38 l/min with a maximum residual pressure of 45 mbar. The device has fairly compact dimensions. Operates from a standard 220 V power supply. Does not require special preparation before use. Post-warranty and warranty service is available throughout the Russian Federation. Characteristics Valve(s) material Standard: chloroprene copolymer NO-68-1 (TU 38 0051166-98) A country Russia Power, W 180 Overall dimensions, L×W×H, mm 289x140x200 Protection class acc. to DIN EN60529 IP20 Noise level, dB no more than 75 Nutrition 220 V/50 Hz Ultimate vacuum, mbar abs. 45 Excess pressure, bar. maximum allowable 0.5 Productivity, l/min 38 Fitting, inch (mm) External diameter, 9 mm. Maximum current, A 1.2 Device weight, kg 7.6 Working chamber material PTFE (polytetrafluoroethylene) Equipment Vacuum pump, cable, instructions, passport, packaging (vacuum regulator and spare parts are not included in the kit and must be ordered separately).

The use of a 2VVN1-6M(H) water-ring vacuum pump for pumping out water-gas mixtures is allowed only if the bulk of the water is separated and discharged at the pump entrance. Failure to comply with this requirement may lead to unacceptable overload of the electric motor and destruction of the details of the 2VVN1-6M(H) pump. The 2VVN1-6M(H) vacuum water ring pump is manufactured in the climatic version of UHL (i.e. for moderate and cold climate) 4 and O4 according to GOST standard 15150-69, meets the requirements of technical specifications TU 3648-015-00218526-2000, designed and manufactured taking into account the requirements of GOST R 52615-2006. Electricity grid must meet the requrimemnts of GOST 32144-2013.

The diaphragm vacuum pump PL.HM02.01.10 has extremely high chemical resistance. The working chambers are made of fluoroplastic, and other parts have a fluoroplastic coating. Complies with protection class IP20. Uniqueness: The versatility of the pump allows you to connect the working chambers in three ways and thereby influence the technical characteristics.