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Two Stage Liquid Ring Two stage pumps are equipped with mechanical seals. The dynamically balanced rotor is supported by grease lubricated ball bearings. The impeller is mounted between the bearings, which results in less vibration, low noise, and easy accessibility to the shaft sealing. The two stage pumps contain two impellers running in series to achieve high vacuum. On these pumps, the discharge end from the first stage is directly ported to the inlet of the second stage. For dimension/curve information, please download the PDF datasheet on the right side of this page.

Literature

  

Product Details

Model No.   Suction & Dis- charge Motor RPM HP 19" Hg 277 Torr 369 mbar 20" Hg 252 Torr 335 mbar 22.5" Hg 188 Torr 251 mbar 25" Hg 125 Torr 166 mbar 27.5" Hg 61 Torr 82 mbar 28" Hg 49 Torr 65 mbar 28.7" Hg 31 Torr 41 mbar 28.9" Hg 26 Torr 35 mbar Average Service Liquid (GPM) 27LC ACFM 1-1/2 1750 7.5 64 64 65 67 66 63 52.5 47.5 2.2   SCFM       23 21 16 11 6 4 2 2 2.2 27C ACFM 1-1/2 1750 7.5 97 97.5 102 105 106 102.5 91 84 2.7   SCFM       36 33 26 18 9 7 3 3 2.7 210C ACFM 1-1/2 1750 10 127.5 127.5 131 134 131 126 110 100 2.8   SCFM       47 43 33 22 11 8 4 3 2.8 215C ACFM 2 1750 15 173 173 175 177 172 170 150 138 5.5   SCFM       63 58 43 30 14 11 6 5 5.5 220C ACFM 2 1750 20 234 234 236 238 232 224 180 162 7.0   SCFM       86 78 59 40 19 15 7 5 7.0 225C ACFM 2 1750 25 259 259 264 268 284 274 226 190 7.5   SCFM       95 86 66 45 23 18 9 6 7.5 240C ACFM 3 1750 40 395 395 400 410 395 380 315 270 8.2   SCFM       145 131 99 68 32 25 13 9 8.2 250C ACFM 3 1750 50 465 470 485 510 525 500 395 320 13.0   SCFM       170 156 120 85 43 33 16 11 13.0 260A ACFM 4" 1150 60 520 525 540 570 580 570 528 500 24   SCFM       190 174 134 94 47 37 22 17 24 275A ACFM 4" 1150 75 770 780 810 845 810 765 620 545 28   SCFM       281 259 201 139 66 49 25 19 28 * Materials Of Construction: Type 14 = Cast iron casing, 60T AISI 420 stainless steel coated impeller, AISI 420 stainless steel shaft and carbon/silicon/viton mechanical seals. Type 06 = AISI 316 stainless steel casing, impeller, AISI 420 stainless steel shaft and carbon/silicon carbide/viton mechanical seals.

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