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Gas ejectors for two-stage liquid ring vacuum pumps GOV 3211, GOV 3212 GPV 4011 . . . GPV 6312

Gas ejectors for two-stage liquid ring vacuum pumps GOV 3211, GOV 3212 GPV 4011 . . . GPV 6312
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Gas ejectors for two-stage liquid ring vacuum pumps GOV 3211, GOV 3212 GPV 4011 . . . GPV 6312 - 1

Gas ejectors for two-stage liquid ring vacuum pumps GOV 3211, GOV 3212 GPV 4011 . . . GPV 6312 VACUUM TECHNOLOGY GPV G 1 133.73101.52.01 E 07/00 Operating pressure: 4 to 80 mbar Suction volume flow: 10 to 400 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 liquid ring vacuum pumps so that lower absolute pressures become possible (to 8 mbar). Fields 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 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. 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. Service liquid: water up to 15°C water up to 30°C Suction pressure: 8 ... 40 mbar 20 ... 80 mbar Series: GOV 3211,3212 GOV 3211, 3212 GPV 4011 - 6012 GPV 4311 - 6312 In case of particularly low suction the gas ejector GPV 5112 is available. Service liquid: water 15°C Suction pressure: 4 ... 12 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 ejectors for two-stage liquid ring vacuum pumps GOV 3211, GOV 3212 GPV 4011 . . . GPV 6312 - 2

2 Material design MATERIAL DESIGN Item COMPONENTS 81 88 0951 Casing 0.6025 1.4408 0960 Venturi tube holder 0.6025 0969 * Insert ring - 1.4541 0970 Motive nozzle hard rubber 1.4401 0975 Venturi tube In case of material design 88 the venturi tube holder is not in contact with the medium handled. * only in case of material design 88 Sectional drawing

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Gas ejectors for two-stage liquid ring vacuum pumps GOV 3211, GOV 3212 GPV 4011 . . . GPV 6312 - 3

3 Technical Data Suction pressure range 4 to 12 mbar Service liquid temperature up to 15°C gas ejector + liquid ring vacuum pump pump speed rated power of the motor of the liquid ring vacuum pump pressure at a suction volume flow = zero make-up water requirements in m3/h KB difference in temperature °C FB rpm kW mbar 5 2 GPV 5112 + LPH 55320 1450 11 ca. 2 0,95 1,55 2,7 Suction pressure range 8 to 40 mbar Service liquid temperature to 15°C gas ejector + liquid ring vacuum pump pump speed rated power of the motor of the liquid ring pressure at a suction volume flow = zero make-up water...

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Gas ejectors for two-stage liquid ring vacuum pumps GOV 3211, GOV 3212 GPV 4011 . . . GPV 6312 - 4

4 Performance graph of the combinations Suction pressure range: 4 to 12 mbar for service liquid temperatures to 15°C 10 1000 1 100 suction pressure suction volume flow 4 6 20 40 200 GPV 5112 + LPH 553201 8 1 speed: 1450 rpm 2 1000 100 200 400 600 mbar m³/h Suction pressure range: 8 to 40 mbar for service liquid temperatures to 15°C 1 10 100 1000 1 10 100 1000 suction pressure suction volume flow 4 20 200 400 2 4 20 40 200 400 m³/h GOV 3211 + LOH 250071 GOV 3212 + LOH 253091 GPV 4011 + LPH 450082 GPV 4012 + LPH 453162 GPV 5011 + LPH 55312 2 GPV 5012 + LPH 553202 GPV 6011 +LPH 653202 GPV 6012...

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Gas ejectors for two-stage liquid ring vacuum pumps GOV 3211, GOV 3212 GPV 4011 . . . GPV 6312 - 5

5 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 GOV 3212 + LOH 253091 GPV 5312 + LPH 553162 GPV 5311 + LPH 55312 2 GPV 5313 + LPH 553202 GPV 6311 + LPH 653202 GPV 6312 + LPH 653272 1speed: 2900 rpm 2speed: 1450 rpm 20 40 60 80 200 400 2 4 20 40 200 400 GPV 5311 + LPH 55312 2 GPV 4313 + LPH 453162 GPV 4312 + LPH 453112 GOV 3211 + LOH 250071 mbar m³/h For the suction volume flow the tolerance is 10 %.

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Gas ejectors for two-stage liquid ring vacuum pumps GOV 3211, GOV 3212 GPV 4011 . . . GPV 6312 - 6

6 Dimension table N1 = gas-inlet, N2 = gas-outlet, TG = motive gas inlet series + N1 / N2 TG b e w weight in kg for material design size 81 88 GOV 3211 DN 32 * G ¼ 36 22 230 3,5 4 GOV 3212 GPV 4011 G ½ 45 38 413 11,5 13 GPV 4012 G ¾ 50 55 555 16 20 GPV 4311 DN 40 315 11 12 GPV 4312 G ½ 45 38 413 11,5 13 GPV 4313 GPV 5011 G 1 55 55 653 20 25 GPV 5012 DN 32 * 54 70 714 23 30 GPV 5112 DN 50 GPV 5311 GPV 5312 G 1 55 55 653 20 25 GPV 5313 GPV 6011 47 GPV 6012 DN 65 DN 25 ** 70 85 790 35 GPV 6311 48 GPV 6312 * Flange suitable for counterflange as per DIN 2558 ** Flange suitable for counterflange...

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