Product Description
Model Code Explanation
Product Overview
The PN and PNL series slurry pumps are single-stage, single-suction slurry pumps (available in vertical and horizontal configurations). They feature long service life, simple structure and reliable operation.
Parameter Range
Flow Q: 7–1430 m3/h
Head H: 12–160 m
Instructions for Use
These pumps are used in mining, metallurgy, municipal construction, chemical, printing and dyeing and other industries for handling various slurries containing quicksand, small mud lumps and similar media. They can also be used in rural areas for pumping river sludge, pond sludge, manure and slurry-like beverages, as well as in cities and factories for transporting ore slurry, drawing yellow sand and mud from underground, etc.
Structure Description
The PN pump is a single-stage, single-suction horizontal centrifugal pump. The inlet is horizontal and axial, and the outlet is vertical and upward. The pump mainly consists of the casing, impeller, wear plate, shaft, bearing bracket (or bearing housing), stuffing box (or shaft seal housing) and other parts. The impeller can be of open or closed type, and the pump casing can be a single-wall casing or a double-wall construction with a liner.
The PNL pump is a single-stage, single-suction vertical slurry pump and is a variant of the PN pump. The suction inlet faces downward, and the discharge outlet leads vertically upward through the discharge pipe.
Product Features
1. The wetted wear parts are made of wear-resistant cast iron, providing long service life.
2. The clearance between the impeller and the wear plate can be adjusted in time to maintain high operating efficiency.
3. For pumps of 4″ and above, the shaft bearings are directly mounted in a horizontal, split bearing bracket, which allows easy disassembly, timely adjustment, and improved bearing operating conditions with a water-cooled coil installed in the oil bath. For models 1PN, 2PN, 3PN, 2PNL and 3PNL, the direction of rotation is clockwise when viewed from the motor end, while for 4PN and 6PN it is counterclockwise when viewed from the motor end.
Performance Parameters
|
Model
|
Flow
|
Head
|
Speed
|
Required NPSH
|
Pump efficiency
|
Power
|
Pump weight
|
Port size
|
|
|
Shaft power
|
Rated motor power
|
Suction
|
|||||||
|
m3/h
|
m
|
r/min
|
m
|
%
|
kW
|
kg
|
mm
|
||
|
1PN
|
7.2
|
14
|
1430
|
0.53
|
21
|
1.3
|
3
|
120
|
50
|
|
12
|
13
|
30
|
1.41
|
||||||
|
16
|
12
|
35
|
1.5
|
||||||
|
2PN
|
30
|
22
|
1450
|
1.32
|
33
|
5.45
|
11
|
150
|
96
|
|
47
|
19
|
39
|
6.25
|
||||||
|
58
|
17
|
39
|
6.9
|
||||||
|
2PNL
|
30
|
22
|
1450
|
1.32
|
33
|
5.45
|
11
|
250
|
62
|
|
47
|
19
|
39
|
6.25
|
||||||
|
58
|
17
|
39
|
6.9
|
||||||
|
3PNL
|
54
|
26
|
1470
|
2.35
|
32
|
12
|
22
|
450
|
125
|
|
108
|
21
|
42
|
14.7
|
||||||
|
151
|
15
|
37
|
16.7
|
||||||
Notes
(1) Disassembly and assembly should be carried out according to the general assembly drawing.
(2) The slurry inlet pipe should not have sharp bends and should be inclined downward as far as possible (at an inclination of about 30°) to facilitate air release.
(3) The operating cycle should be monitored and spare parts and bearings replaced regularly to prevent failures.
(4) The pump should not be operated with an excessively low slurry inflow, to avoid vibration and sedimentation of the slurry.
(5) When the pump is stopped, flush it with clean water to prevent blockage.
(6) For this pump type, except for 1PN and 2PN whose discharge outlet is horizontal, all other models have a vertically upward discharge outlet.
(7) The PN pump must be supplied with a certain amount of shaft sealing water. The sealing water flow is generally 1–3% of the working flow, and the sealing water pressure should be about 1 kgf/cm² higher than the working pressure.
(8) For models 1PN, 2PN, 3PN, 2PNL and 3PNL, the direction of rotation is clockwise when viewed from the motor end. For 4PN, 6PN, 8PN, 10PN and 12PN, the direction of rotation is counterclockwise when viewed from the motor end.
(9) In general, this pump is best installed in a flooded suction, self-priming configuration. For 1PN, 2PN and 3PN pumping ambient-temperature slurry, the installation position of the pump (the horizontal centerline of the pump shaft) should be 1–3 m of water column below the upper surface of the slurry being pumped.
(10) The pump must not be allowed to run backward when stopped.
OEM & Custom Solutions
Chaodun Pump provides full OEM customization, including branding, structural modification, and material upgrades. Available in cast iron and stainless steel variants for specific working media. We support export logistics, custom packaging, and large-scale industrial orders.
FAQs for Overseas Buyers
1. What types of PN/PNL pumps are available?
The series includes both horizontal (PN) and vertical (PNL) single-stage slurry pumps.
2. What materials are used for construction?
Wear-resistant cast iron is standard, with stainless steel options available upon request.
3. What industries use PN/PNL mud pumps?
They are used in mining, metallurgy, municipal drainage, agriculture, and chemical industries.
4. How to maintain pump efficiency?
Adjust the impeller clearance regularly and ensure clean water flushing after operation.
5. Can it handle high-viscosity slurry?
Yes, it’s suitable for slurry with small solids, sand, and mud.
6. What is the power range?
From 1.3kW to 16.7kW, depending on model and operating conditions.
7. Does Chaodun Pump offer OEM service?
Yes, full OEM and branding customization are available for global distributors.