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3G SERIES THREE SCREW PUMP 3G SERIES THREE SCREW PUMP
3G SERIES THREE SCREW PUMP 3G SERIES THREE SCREW PUMP
● Applacation:
It applies to deliver clean and non-corrosive medium which has lubricating property at temperature below ≤150℃、with the viscosity of 5-760cSt,The pump's working pressure range from 0.6MPa to 2.5MPa and flow capacity range from 0.6-123m3/h.
● Feature:
(1)Medium is delivered in axial direction continuously without agitation and pulsation.
 (2)Small vibration and low noise
 (3)High pressure and high efficiency
 (4)Simple structure, easy disassembly and assembly
 (5)Small volume and light weight
 (6)Slight wear and long life of the pump
● Structure:
The pumps are sealed generally by mechanical seal and driven by the motor through the claw coupling.
● Material:
The driving and driven screw 16MnCrS5,40Cr,45,38CrMoALA  Pump casing: HT200,QT450-10,ZCuSn10Pl,ZG270-500
Example of pump model
 Eg:3G25×4-46
 3G:three screw pump
 25:out-side diameter of the driving screw 25mm
 4:pitch number of the screw
 46:46° pitch angle of the screw
 R:heavy fuel oil
 r:light fuel oil
 W:high temperature heated oil
 N:high visc oil
 A:code of design improvement
 S:double suction

● According to the application modes three screw pump is divided into five series
Series
Main application Performancescope
Capacity m3/h Pre MPa
3G Lub oil visc3-20oE;temp≤80℃ 0.6-570 2.5
3GR Heavy feul oil visc3-50oE;temp≤120℃ 0.6-570 2.5
3GR Light feul oil visc1.2-5oE;temp≤120℃ 0.6-570 1.6
3GW High temp feul heated oil;temp≤150℃ 0.6-363 1.6
3GN High visc oil 100oE;temp≤80℃ 0.6-636 2.5

 ●
Functional date of 3G series screw pum

type
Pressure MPa Capacity Q Speed
r/min
(NPSH) rm Efficiency η % Motor
m3/h L/min Power kw Model
25×4-46 1.0 0.8 13 1450 4 62 0.75 Y802-4
2.5 0.6 10 60.6 1.5 Y90L-4
1.0 2.0 33 2900 4.5 59.4 1.5 Y90S-2
2.5 1.6 26 69 3 Y100L-2
   30×4-46 1.0 1.6 26 1450  4.5 63.5 1.1 Y90S-4
2.5 1.2 20 61 2.2 Y100L1-4
1.0 3.6 60 2900  60 2.2 Y90L-2
2.5 3.2 53 69 4 Y112M-2
36×4-46 1.0 2.8 46    1450    4.5 66 2.2 Y100L1-4
2.5 2.4 40 66.5 4 Y112M-4
1.0 6.5 108 2900 5 60.5 4 Y112M-2
2.5 6 100 72 7.5 Y132S2-2
42×4-46 1.0 4.8 80 1450 5 62 4 Y112M-4
2.5 4.2 70 73 5.5 Y132S1-4
1.0 10.5 175  2900  5.5 61 5.5 Y132S1-2
2.5 10 166 72 15 Y160M2-2
45×4-46 1.0 6.3 106  1450  5 70 3 Y100L2-4
2.5 5.9 99 74 7.5 Y132M-4
1.0 13.5 225  2900  5.5 60 7.5 Y132S2-2
2.5 13 217 75 15 Y160M2-2
   60×4-46 1.0 15.5 255  1450  5 71.3 11 Y160M-4
2.5 14.5 245 74 15 Y160L-4
1.0 32 533  2900  5.5 63 18.5 Y160L-2
2.5 31.5 525 77 37 Y200L2-2
70×2-46 0.6 24 400  1450  5 71 7.5 Y132M-4
1.0 23.5 390 75 11 Y160M-4
1.6 22.5 370 76 15 Y160L-4
 70×4-46 1.0 24.5 408  1450  5 72.5 18.5 Y180M-4
2.5 23.5 392 79 30 Y200L-4
 80×2-46 0.6 36.5 608  1450  5 72 11 Y160M-4
1.0 35 594 75.5 18.5 Y180M-4
1.6 34.5 575 76.5 22 Y180L-4
 80×4-46 1.0 37 617  1450  5.5 72 30 Y200L-4
2.5 35 590 78.1 45 Y225M-4
100×2-46 0.6 72.5 1208  1450  5 73 22 Y180L-4
1.0 71 1183 77 37 Y225S-4
1.6 60.5 1158 79 45 Y225M-4
100×4-46 1.0 72.5 1208 1450  5.5 73 55 Y250M-4
2.5 70 1165 78.5 75 Y280S-4
 S100×3-27 0.6 72 1196  1450  6 62 22 Y180L-4
1.6 70 1160 72 55 Y250M-4
2.5 69 1145 74 75 Y280S-4
S120×3-27 0.8 123 2055  1450  6 74.5 55 Y250M-4
1.5 120 2010 76 90 Y280M-4
2.5 115 1920 78.5 132 Y315M-4
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ag水果拉霸殊死