Products

JSC EZTM has manufactured hot blast valves for the last 50 years. All blast furnaces of the former USSR as well as others in ARE, Algeria , Turkey, India, Finland, Poland, Yugoslavia, France are equipped with them. Production of valves has been constantly improved through the extension of service life, reduction of heat loss within the valve, and the increase in overhaul operation inspections.

At present JSC EZTM manufactures hot-blast valves with diameters of 900, 1100, 1300, 2000 mm. The above-mentioned valves are manufactured for operation in conditions of water cooling and evaporative cooling and are equipped with different drives: electro-mechanic or hydraulic.

According to their technical parameters the quality of JSC EZTM valves are very competitive with those of "Zimmermann & Jansen"(Germany) and "Armatury Group"(Czech Republic) manufacturing origins.

These valves have the following features:

• disk, flow section of the body and  the inner surface of the cover have the  refractory coating  which considerably  reduce heat loss in the valve;
• design features of the disk provide high density of locking of the valve;
•  the most  heat-loaded elements of the valve construction have minimum quantity of welds  in the zone of high temperatures in order to provide high  operate reliability  of the valve;
• the gland seal of ducts which supply and discharge cooling agent to the valve disk is manufactured from an ecological clean graphite which ensures its advantages under service condition;
• advanced technological equipment of valve production provides their high quality.

The hot-blast valves can be used as cut-off valves for separation of gаs burners from air heaters in the “for blast” mode.

TECHNICAL DATA

a -water cooling;

b -evaporative cooling;

Б – unpowered valve;

Г – hydraulically driven valve;

П – electrically driven valve