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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

Furniture for laboratory work. Table-sink on a support pedestal made of metal LAB-M MO ME 75.60.90 PP Width: 750 Depth: 600 Height: 900 Equipment: table top – a single module made of polypropylene. Attention! It is not recommended to use it for work with oil and petroleum products (fuel oil, bitumen, etc.) The inner size of the bowl – 500*400*290 mm

Design features: Programmable microprocessor temperature controller; Three programs of ten steps with the ability to set temperature, temperature change rates and exposure time; Manual heating mode with timer with sound notification and auto-off; Durable ceramic muffle; Semi-open heaters on four sides of the chamber; Backlit graphic display; Automatic shutdown of heating when opening the door; Sound and light alarm when the current temperature exceeds the limits of the permissible interval; Highly efficient thermal insulation of the housing; The furnace body is made of high-quality sheet steel and painted with heat-resistant powder paint. Technical specifications: Maximum heating temperature, °C +1300 Temperature stability in steady-state thermal mode, °C ± 10 Warm-up time to the maximum temperature, no more than 120 min Dimensions of the working chamber, WxHxD, not less than 200x110x285 mm Overall dimensions, WxHxD, not more than 505x565x655 mm Rated supply voltage, V 3300

The LA-160 nitrogen filling trap is installed on the inlet flange of the diffusion pump and is designed to reduce the flow of working fluid vapors into the pumped volume by condensing them on the elements of the freezing device cooled with liquid nitrogen.

The table is based on a reinforced O-shaped, collapsible metal frame made of steel shaped tube, rectangular and square cross-sections. The back wall is covered with a metal shield. The table is mounted on adjustable screw bearings, allowing the table to be installed horizontally, regarding the floor unevenness. Frame cover: high-quality powder-polymer paint perfectly protects the base of the table from the effects of any aggressive liquids. The cover of the frame is easily cleaned with disinfectant solutions. The working surface of the Laminate table is a waterproof chipboard plate covered with chemically resistant and heat-resistant plastic.

A set of devices is used to determine the oil content in oil paraffins in accordance with the State Standard 9090 and is intended for placement in a liquid bath BNTI 05 04.

Furniture for laboratory work. Hanging drying rack for dishes Length, mm: 400 Height, mm: 500 PACKAGE CONTENTS housing – 10 mm thick polypropylene 27 bulb holders with a diameter of 10mm (18pcs. 125mm long, 9pcs. 185mm long) suspension fasteners included

Furniture for laboratory work. Laboratory table Working surface: TRESPA TopLab 6mm, on a substrate of wood-containing material (plywood 15mm, melamine 16mm), edged around the perimeter of PVC edge 2mm. Length, mm: 1600 Depth, mm: 600 Height, mm: 900(1800) EQUIPMENT rack support racks – aluminum profile painted with powder paint (RAL 1001) the top panel of the rack with a depth of 190mm – metal painted with powder paint (RAL 1001)

A 900 mm high table with a 900×640 mm countertop is made of porcelain stoneware, monolithic ceramics, stainless steel, chipboard or plastic. Designed for standing work. It can be equipped with various superstructures, sliding and hanging bollards. Overall dimensions 900x640x900 mm

The 2NVBM-160(R)/1000 booster pump is a structure consisting of housings, a steam pipe, a trap and a heater. The alignment of the steam line in the 2NVBM-160(R)/1000 pump housing is carried out by a rod inserted into the hole of the hood (oil reflector) and screwed into the upper part of the steam line. The required effective speed of action of the pre-vacuum pump (pumps) at a pressure of 93 Pa (0.7 mm Hg) at the outlet of the booster pump 2NVBM-160(P)/1000 is not less than 15 l/s. The maximum residual pressure of the 2NVBM-160(P)/1000 pump, measured by the PMI-2 manometric ionization converter with nitrogen filled into its trap, is no more than 1.3×10-3 Pa (1×10-5 mm Hg). The pressure of cooling water at the inlet to the 2NVBM-160 pump should be from 0.2 to 0.5 MPa (from 2 to 5 kgf/cm2). The drain from the pump must be free with a jet break. Cooling water consumption is 145 l/h. The total amount of working fluid for the 2NVBM-160(P)/1000 pump is 5 liters., the level of working fluid should be between the upper and lower risks of the level gauge. 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, so the time after which the working fluid is replaced or refilled can be 100 hours or more. A large flow rate of the working fluid is observed when the pump is operating in the input pressure range from 1.33 to 13.3 Pa (from 1·10-2 to 1·10-1 mm Hg). The operating mode of the pump in the range from 13.3 Pa (0.1 mmHg) to the maximum residual pressure is cyclically irregular.

Industrial drying cabinet SNOL (SHS) 200/5-I2 V is designed for drying, tempering, aging, thermal testing and other types of heat treatment of various materials in an air environment at temperatures up to 500 ° C with forced air convection in stationary conditions.