Gas ejector for single-stage liquid ring vacuum pumps GEV 25 . . . GEV 1800
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Gas ejector for single-stage liquid ring vacuum pumps GEV 25 . . . GEV 1800 - 1

Gas ejector for single-stage liquid ring vacuum pumps GEV 25 . . . GEV 1800 VACUUM TECHNOLOGY GPV G 2 133.73102.55.01 E 05/99 Operating pressure: 8 to 80 mbar Suction volume flow: 5 to 1050 m³/h CONSTRUCTION TYPE Sterling SIHI gas ejectors are simple and sturdy vacuum gas ejectors with following particular characteristics: Adaptable to different operating conditions by adequate material selection Simple installation into the suction line of liquid ring vacuum pumps Low noise service which is free of maintenance and deficient in vibration APPLICATION Sterling SIHI gas ejectors extend the operating range of Sterling SIHI liquid ring vacuum pumps so that lower absolute pressures become possible (to 8 mbar). Field of application are e.g.: Chemistry and pharmacy for distilling and degassing Electric industry for impregnation and drying Plastics industry for degassing etc. The gases which are to be handled may be vapour saturated or aggressive. Sterling SIHI gas ejectors are used wherever the vacuum attainable by a liquid ring vacuum pump is not sufficient and where danger of running in cavitation is immenent for the liquid ring vacuum pump. Even if the suction side of the ejector is closed, the liquid ring vacuum pump is protected against cavitation. GEV 150 + LEM 150 NOTE The characteristics of the suction volume flow of the gas ejectors depend on essentially on the suction capacity of the liquid ring vacuum pump and therefore on the vapour pressure ant temperature of the service liquid used. To meet with the different conditions, we offer 2 construction series. Type: A B Service liquid: water to 15°C water to 30°C Suction pressure: 8 . . . 40 mbar 20 . . . 80 mbar POLLUTION CONTROLL: To reduce the exhaust blast the motive gas can be removed from the separator. The standard combinations described in this catalogue list are optimal in view of suction volume flow, power absorption and service charges. Other combinations of gas ejectors and liquid ring vacuum pumps can be applied. Details on request.

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Gas ejector for single-stage liquid ring vacuum pumps GEV 25 . . . GEV 1800 - 2

2 Material design GEV 25 and GEV 50 GEV 90...GEV 150 GEV 250...GEV 425 GEV 350...GEV 450 Item COMPONENTS 0S 4F 0R 0B 4B 0A 4B 0970 Motive nozzle 1.4571 hard rubber 1.4571 2.0401 1.4571 0975 Venturi tube 2.0401 1.4571 0951 Casing EP-resin glass-fibre reinforced 0.6025 1.4408 0.6025 1.4408 0960 Venturi tube holder not available 0.6025 0.6025 0969 Insert ring not available 1.4571 not available 1.4571 GEV 600...GEV 1800 GEV 91...GEV 161 Item COMPONENTS 0A 4B Item COMPONENTS 0A 4B 0970 Motive nozzle 2.0401 1.4571 17.40 Motive nozzle 2.0401 1.4571 0975 Venturi tube 17.50 Venturi tube 0951 Casing...

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Gas ejector for single-stage liquid ring vacuum pumps GEV 25 . . . GEV 1800 - 3

3 Technical Data Suction pressure range 8 to 40 mbar type A service liquid temperature up to 15 °C Suction pressure range 20 to 80 mbar type B service liquid temperature up to 30 °C gas ejector + liquid ring-vacuum pump pumpspeed rated power of the motor of the liquid ring vacuum pump pressure at a suction volume flow = zero mbar mbar make-up water flow for differnce in temperature m³/h rpm kW type A type B 2°C 5°C GEV 25 + LEM 25 2800 0,75 8 -* 0,11 0,06 GEV 50 + LEM 50 1,5 0,19 0,11 GEV 91 + LEM/L 91 AZ/AB 2900 2,2 10...12 0,35 0,22 GEV 126 + LEM/L 126 AZ/AB 3 5...6 8...9 0,4 0,26 GEV 161...

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Gas ejector for single-stage liquid ring vacuum pumps GEV 25 . . . GEV 1800 - 4

4 Performance graph of the combinations Suction pressure range: 8 to 40 mbar for service liquid temperatures up to 15°C 1 10 100 1000 1 10 100 1000 suction pressure suction volume flow 2 4 20 200 400 mbar 2 4 20 40 200 400 m³/h GEV 25A+LEM 251 GEV 50A+LEM 501 GEV 90A+LEM/L 912 GEV 125A+LEM/L 1252 GEV 150A+LEM/L 1502 GEV 250A+LEM/L 250 2 GEV 325A+LEM 3252 GEV 425A+LEM 4252 1speed: 2800 rpm 2speed: 1450 rpm 6 8 40 60 80 10 100 1 10 100 1000 suction pressure suction volume flow 2 6 20 40 200 mbar m³/h 4 GEV 91A+LEM 911 GEV 126A+LEM 1261 GEV 161A+LEM 1612 8 400 20 40 60 80 1 speed: 2900 rpm 2...

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Gas ejector for single-stage liquid ring vacuum pumps GEV 25 . . . GEV 1800 - 5

5 Performance graph of the combinations Suction pressure range: 8 to 40 mbar for service liquid temperatures up to 15°C 100 500 900 1 10 100 1000 suction pressure suction volume flow m³/h mbar GEV 350A+ LEH 3501 GEV 450A+LEH 4501 GEV 600A+LEH 6002 GEV 800A+LEH 8002 GEV 900A+LEH 9002 GEV 1200A+LEH 12003 GEV 1500A+LEH 15003 GEV 1800A+LEH 18003 1speed: 1450 rpm 2speed: 1460 rpm 3speed: 975 rpm 2 4 6 8 20 40 80 200 400 300 700 1100 60 If a combination gas ejector - liquid ring vacuum pump is applied in the range from 40 mbar to 1013 mbar, the motive gas flow can be shut off. Then the suction...

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Gas ejector for single-stage liquid ring vacuum pumps GEV 25 . . . GEV 1800 - 6

6 Performance graph of the combinations Suction pressure range: 20 to 80 mbar for service liquid temperatures up to 30°C 1 10 100 1000 10 100 1000 suction pressure suction volume flow GEV 25B+LEM 251 GEV 50B+LEM 501 GEV 90B+LEM/L 912 GEV 125B+LEM/L 1252 GEV 150B+LEM/L 1502 GEV 250B+LEM/L 2502 GEV 325A+LEM 3252 GEV 425B+LEM 4252 1speed: 2800 rpm 2speed: 1450 rpm 20 40 60 80 200 400 mbar 2 4 20 40 200 400 10 100 10 100 1000 suction pressure suction volume flow GEV 91B+LEM 911 GEV 126B+LEM 1261 GEV 161B+LEM 1612 1 speed: 2900 rpm 2 speed: 1460 rpm 20 40 60 80 200 400 mbar 20 40 60 80 If a...

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Gas ejector for single-stage liquid ring vacuum pumps GEV 25 . . . GEV 1800 - 7

7 Performance graph of the combinations Suction pressure range: 20 to 80 mbar for service liquid temperatures up to 30°C 100 1000 10 100 1000 suction pressure suction volume flow GEV 350B+ LEH 3501 GEV 450B+LEH 4501 GEV 600B+LEH 6002 GEV 800B+LEH 8002 GEV 900B+LEH 9002 GEV 1200B+LEH 12003 GEV 1500B+LEH 15003 GEV 1800B+LEH 18003 1speed: 1450 rpm 2speed: 1460 rpm 3speed: 975 rpm 20 40 60 80 200 400 mbar 200 300 400 600 500 m³/h 700 800 If a combination gas ejector - liquid ring vacuum pump is applied in the range from 80 mbar to 1013 mbar , the motive gas flow can be shut off. Then the...

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