UVHE

UVHE

The UVHE rank ejectors are used as attachment to the liquid ring vacuum pumps UVHD. The equipment, consisting of an ejector and liquid ring vacuum pump, is intended to exhaust air, gas, steam at a pressure from below 6 kPa absolute pressure up to 0,5 kPa absolute pressure.

Application

The UVHE rank ejectors are used as attachment to the liquid ring vacuum pumps UVHD. The equipment, consisting of an ejector and liquid ring vacuum pump, is intended to exhaust air, gas, steam at a pressure from below 6 kPa absolute pressure up to 0,5 kPa absolute pressure. Vacuum pumps with ejectors find their application in food, chemical, metallurgical and construction industry. They are intended to exhaust air, gases and vapors, mainly from water vapors. Vacuum pumps in the ZC, TC, AC version may exhaust gases which are chemically aggressive. Gases may be slightly contaminated by solid particles. The dimension of a solid grain can not exceed 0,1 mm.
Vacuum pumps with ejectors can be used in potentially explosive atmosphere. They are certificated to I M2 and II 2G IIC T4 atmosphere.

Construction

The ejector is a jet device. The propellant jet flow creates differences of suction pressure of the vacuum pump and of atmospheric pressure. Propellant is accelerated in the Laval nozzle and then it takes the driven gas through a mixing chamber and a diffuser to the vacuum pump suction.
The ejectors UVHE are always used with UVHD vacuum pumps.

ejector type vacuum pump type
40-UVHE-105 40-UVHD-105
40-UVHE-135 40-UVHD-135
40-UVHE-180 40-UVHD-180
50-UVHE-290 50-UVHD-290
50-UVHE-350 50-UVHD-350
50-UVHE-420 50-UVHD-420
100-UVHE-1000 100-UVHD-1000
100-UVHE-1300 100-UVHD-1300
100-UVHE-1600 100-UVHD-1600
Execution

LN – Nozzle and diffuser – plastic material, body – structural steel
YC – Nozzle and diffuser – plastic material, body – chromium-nickel steel
ZC – Nozzle and diffuser – plastic material, body – stainless chromium-nickel-molybdenum steel
TC – Nozzle and diffuser – plastic material, body – titanium
AC – Nozzle and diffuser – plastic material, body – nickel alloy

Selection of nozzle and diffuser material version is according to exhaust gas

Vacuum pumps

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