3G Marine Three Screw Pump

Applications:

1. 3G three screw pump high pressure oil pump is a kind of positive displacement rotary pump with the properly meshing in pump block.

2. It could be used to transfer non-corrosive oil or lubricated liquid that similar to oil, and the double jacket one could pump heavy oil, bitumn, resin.

3. Pump is with double jacket casing which can be heated by hot steam, thermal oil, etc to reduce the viscosity of fluids with easy solidification.

4. Widely used in oil and gas field, shipbuilding, petrochemical industry, thermal power plant, etc.

◆ 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.

◆Material: The driving and driven screw 16MnCrS5,40Cr,45,38CrMoALA　Pump casing:　HT200,QT450-10,ZCuSn10Pl,ZG270-500.

◆ According to the application modes three screw pump is divided into five series:

Series	Main application	Performance scope
Series	Main application	Capacity (m3/h)	Pressure (MPa)
3G	Lub oil visc3-20oE;temp≤80℃	0.6-570	2.5
3GR	Heavy fuel oil visc3-50oE;temp≤120℃	0.6-570	2.5
3GR	Light fuel oil visc1.2-5oE;temp≤120℃	0.6-570	1.6
3GW	High temp fuel heated oil;temp≤150℃	0.6-363	1.6
3GN	High visc oil 100oE;temp≤80℃	0.6-636	2.5

Model Explanation

for example 3G25×4-46
3G: three screw pump
25: out-side dizmeter of the driving screw 25mm
4: potch 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

Performance Parameter

Model	Pressure (Mpa)	Capacity		Speed (r/min)	NPSH (m)	Efficiency (%)	Motor
Model	Pressure (Mpa)	m3/h	L/min	Speed (r/min)	NPSH (m)	Efficiency (%)	Power (kw)	Model
25×4-46	1.0	0.8	13	1450	4	62	0.75	Y802-4
	2.5	0.6	10	1450	4	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	2900	4.5	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	1450	4.5	61	2.2	Y100L1-4
	1.0	3.6	60	2900	5	60	2.2	Y90L-2
	2.5	3.2	53	2900	5	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	1450	4.5	66.5	4	Y112M-4
	1.0	6.5	108	2900	5	60.5	4	Y112M-2
	2.5	6	100	2900	5	72	7.5	Y132S2-2
42×4-46	1.0	4.8	80	1450	5	62	4	Y112M-4
	2.5	4.2	70	1450	5	73	5.5	Y132S1-4
	1.0	10.5	175	2900	5.5	61	5.5	Y132S1-2
	2.5	10	166	2900	5.5	72	15	Y160M2-2
45×4-46	1.0	6.3	106	1450	5	70	3	Y100L2-4
	2.5	5.9	99	1450	5	74	7.5	Y132M-4
	1.0	13.5	225	2900	5.5	60	7.5	Y132S2-2
	2.5	13	217	2900	5.5	75	15	Y160M2-2
60×4-46	1.0	15.5	255	1450	5	71.3	11	Y160M-4
	2.5	14.5	245	1450	5	74	15	Y160L-4
	1.0	32	533	2900	5.5	63	18.5	Y160L-2
	2.5	31.5	525	2900	5.5	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
70×4-46	2.5	23.5	392	1450	5	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
80×4-46	2.5	35	590	1450	5.5	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
100×4-46	2.5	70	1165	1450	5.5	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

Structure

Photo

3G Marine Three Screw Pump

Our Certification

3G Marine Three Screw Pump