This is a valve with an upgraded hard wedge and position indicator. Gate valve can be used with water flow and steam only for the switching on and off the pipeline.

DESIGNATION OF WATER ULTRAFILTRATION. Water ultrafiltration is used to remove proteins, high molecular organic compounds from liquids. The facilities are capable of partial retaining of bacteria and viruses. Mechanical fine-dispersed impurities may be also removed. The technique is of high demand in various sectors of industry thanks to its rather extensive potentialities: • Feed water treatment at facilities with demineralization filters and reverse osmos (ro) plants (boiler houses and plants, heat exchanging equipment); • Removal of bacteria and viruses from flows of water coming from open sources (treatment of drinking and process water); • Treatment of industrial waste waters; • Final stage of advanced treatment downstream of biological waste treatment facilities.

DESIGNATION Ozone is a colorless, slightly blue gas with harsh offensive odor. It has a strong oxidation capacity. Ozone generators included into water treatment facilities allow for removal of organics, oil products and surfactants from water. Ozonization of water flow improves its organoleptic properties (decrease in water color index, elimination of unpleasant odor and bad taste). Water is disinfected thanks to ozone oxidation capacity thus eradicating a majority of pathogenic microorganisms. Iron and manganese compounds may be also removed from water with the help of ozone.

DESIGNATION AND SCOPE OF APPLICATION OF REVERSE OSMOS TECHNOLOGY. Reverse osmos is the most promising and widely used water treatment and conditioning technology. A reverse osmos unit is capable of removing 0.001–0.0001 µm particles from water. Hardness salts, sulphates, nitrates, sodium ions, small molecules, coloring agents fall under this range. The use of pretreatment stages (mechanical treatment and micro-ultra and nano-filtration) is recommended for more efficient operation.

DESIGNATION OF DISK FILTERS. In water treatment systems mechanical filters are used as a preliminary stage. They are designed for removal of solid inclusions from incoming water flow.

Hydraulic tubing tongs К-4500.00.00.00.000-02, К-4502 are designed for making-up (turning-up) and breaking-out (turning-out) tubing with outer diameters: 2 3/8 " (60 mm), 2 7/8 " (73 mm), 3 1/2 " (89 mm), 3 3/4 " (95 mm), 4 " (102 mm), 4 1/8 "(105 mm), 110 mm, 4 1/2 " (114 mm) with right- and left-handed threads. This hydraulic tongs can be used under moderately cold climate conditions, UHL1, in the range of environment temperatures from - 45°C to + 45°C in accordance with GOST 15150, and do not require protection against atmospheric moisture.