The P550 series three-plunger pump can theoretically handle input power of up to 550 horsepower (400 kW). As an upgraded version of the P380 series three-plunger pump, it has a longer stroke and smaller volume change, increas-ing from 102 mm to 127 mm.
The P550 series three-plunger pump can theoretically handle input power of up to 550 horsepower (400 kW). As an upgraded version of the P380 series three-plunger pump, it has a longer stroke and smaller volume change, increas-ing from 102 mm to 127 mm. Therefore, it can deliver greater performance output, from a minimum pressure output of 10,877 PSI at 72.03 GPM (272.7 L/min at 750 Bar) to 18.8 GPM at the maximum pressure of 40,000 PSI (71.2 L/min at 2750 Bar).
Plunger Pump Parameters
Note:
1 Bar = 0.1 MPa
1 L/min = 0.06
1 kW = 1.36 hp
The flow value here refers to the "theoretical" flow and does notl take into account the efficiency reduction caused by the compressibility of water and the expansion of pressure-bearing compo/nents. Within this performance range, you can match your engine power according to your own needs. lt should be noted that factors such as plunger diameter and stroke are not considered here, so the flow will be larger than the actu al flow.
Performance Range Power
Fluid End Component Details
Serial Number
Description
Serial Number
Description
Serial Number
Description
1
Valve block
16
Cooling water connector
31
O-ring
2
40K Pressure gauge
17
O-ring
32
O-ring
3
Locknut
18
Elastic retaining ring
33
High-pressure pump plug
4
Connector
19
Low-pressure return water sealing seat
34
Pump outlet connector
5
Explosion-proof film holder
20
End face seal
35
Hinge screw
6
Hex socket cylindrical head screw
21
Sign
36
Cooling water seal joint
7
Packing box
22
Combined valve body
37
Cooling water end face gasket
8
Compression nut
23
Water intake valve
38
Cooling water connector
9
Plunger
24
Drain valve
39
Sealing plug
10
Plunger copper sleeve
25
Spring
40
O-ring
11
40K packing
26
Retaining ring
41
O-ring
12
Alloy ring
27
Locking circlip
42
Cooling water pipe
13
Anti-loosening pressure block
28
Circlip
43
Label nut
14
Hex socket flat head screw
29
washer
44
O-ring
15
Cooling water connector
30
Polyurethane Oil Seal
45
Shaft seal
Fluid End Parameters
Plunger Pump Model
Plunger Model Size
Flow rate at a specific rotational speed
Rated Working Pressure
Plunger Model
Diameter
Stroke
400 R P M/Min
450 R P M/Min
mm
mm
L/Min
Bar
P550-40k-#8
#8
18.54
127
41
46
2750
P550-40k-#9
#9
20.32
127
49
55
2750
P550-22k-#12
#12
30.5
127
111
125
1500
P550-15k-#15
#15
40
127
191
215
1000
1 Bar = 0.1 MPa = 14.5 psi
1 L/min = 0.06 mm³/h = 0.264 GPM
1 kW = 1.36 hp
The flow value here refers to the 'theoretical'"flow, without considering the efficiency reduction caused by the compressibility of water and the expansion of pressure-bearing components.
Here we only illustrate the conventional plunger matching data for this high-pressure pump. Within this range, you can also customize the required plunger parameters to meet your actual usage needs.
Performance Range 
Power
