We utilized the “Gardner Denver” PZ serial mud pump from the United State as reference and optimized the mud pump partly. The optimized pump features pleasing shape, advanced design, reasonable structure, and high efficiency. At power end, pinion shaft and bull gear are both of hard teeth, wear-resistant and transmission stable. Main parts at power end and all parts of fluid end are exchangeable with similar pumps from the United States.
 

Model	P-275	P-550	P-750	P-1000	P-1600	P-1600HL
Input power rating (KW)	205	410 (550HP)	559(750HP)	746 (550HP)	1193 (16000HP)	1193 (16000HP)
Rated pump speed (RPM)	175	145	145	130	115	115
Stroke Length (mm)	203(8”)	177.8(7”)	203.2(8”)	228.6 (9”)	279.4(11”)	279.4(11’)
Gear ratio	4.625	4.625	4.5	4.483	4.38	4.38
Rated speed of transmission shaft (RPM)	823	670	652	582	504	504
Max. working pressure (Kg/sq.cm)	219 (3118PSI)	352 (5000PSI)	352 (5000PSI)	352 (5000PSI)	352 (5000PSI)	527 (7500PSI)
Valve size (API)	4#	7#	7#	7#	7#	6#
Max. liner diameter (in)	Φ5’	Φ7’	Φ7’	Φ7’	Φ7’	Φ7’
Max. displacement (GPM)	357	507	580	585	632	632
Max. liner pressure (Kg/sq.cm)	79 (1122PSI)	118 (1673PSI)	140 (1996PSI)	186 (2639PSI)	275 (3905PSI)	275 (3905PSI)
Diameter of suction pipe (mm)	158 (6 1/4”’)	203.2 (8”)	254(10”)	254 (10”)	254 (10”)	254 (10”)
Diameter of discharge pipe (mm)	58 (2-9/32”)	100 (4”)	100 (4”)	100 (4”)	100 (4”)	100 (4”)
Overall dimensions (mm)	2900*1700*2000	3205*2250*2000	3650*2460*2520	4320*2500*2600	4380*2700*2700	4520*2790*3040
Weight (exclude  joint and pulsation dampener)	5,000KG	8,300KG	10,000KG	12,480KG	17,600KG	21500KG
Weight (include joint and pulsation dampener)	5,600 KG	10,800 KG	12,200KG	15,500KG	21,000KG	25,000KG