PGY Series Horizontal Slurry Pumps | Heavy Duty High Head Pump
Changyupump PGY series horizontal slurry pumps are designed for high head and severe wear conditions. Maximum head reaches approximately 100 meters. Double casing construction allows easy replacement of wetted parts without dismantling piping. Oil-lubricated bearing assembly ensures long-term reliability. Discharge sizes from 40mm to 400mm. Wetted parts available in high chrome alloys (BTMCr27, Cr28, Cr33) and duplex stainless steel. Common applications: mining, mineral processing, coal washing, FGD, and chemical slurries.
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Plage de débit: |
117m³/h ~ 976 m³/h |
|---|---|
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Gamme de têtes: |
21.1 m ~ 101.6 m |
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Puissance du moteur: |
22 kW ~ 560 kW |
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Vitesse: |
730 / 980 / 1480 r/min |
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Customizable Materials: |
BTMCr27 / BTMCr28 / BTMCr33 / Austenitic stainless steel / Duplex stainless steel / Other corrosion-resistant alloys |
What is a horizontal slurry pump?
A horizontal slurry pump is a pompe centrifuge designed to convey abrasive or corrosive slurries containing solid particles. Unlike standard clean-water pumps, its hydraulic components, flow-passing parts, and bearing system are all designed for heavy-duty applications.
The PGY series features a single-stage, single-suction, horizontal centrifugal design. The pump body employs a double-casing design: the outer layer withstands pressure, whilst the inner flow-passing components are replaceable. This design eliminates the need to dismantle the inlet and outlet piping during maintenance, making on-site replacement of wear parts highly convenient.
The impeller diameter directly determines the head. The PGY series can achieve a maximum head of approximately 100 metres. Discharge diameters range from 40 mm to 400 mm, covering common applications from fine-particle to tailings conveyance.
Le pompes à boues manufactured by Changyu Pump are truly capable of continuous operation in the field.
Applications of Horizontal Slurry Pumps
The PGY series is designed for heavy-duty industrial applications where abrasive solids, corrosive slurries, and high-density tailings challenge pump lifespan and maintenance intervals. Built with double casing, oil-lubricated bearings, and high chrome alloy wetted parts.
Supports compatibles :
Iron tailings, copper concentrate, coal slurry, heavy medium suspension, phosphate slurry, limestone slurry, gypsum slurry (FGD), red mud, alumina slurry, slag slurry, ash water, sand-containing slurry, low-pH process slurries (pH≥1), oxygen-containing corrosive slurries, and high-concentration mineral tailings
Mining & Mineral Processing
Ore concentrate transport, tailings disposal, mine dewatering, heavy media circulation in coal washing plants, and mill discharge.
Metallurgy & Smelting
Alumina production (red mud), steel mill scale slurry, smelter wastewater with fine solids, and slag handling.
FGD (Flue Gas Desulfurization)
Specifically for wet FGD systems requiring high chrome or duplex stainless steel materials to handle chloride ions and low pH.
Chemical & Fertilizer
Phosphoric acid process slurry (pH≥1), titanium dioxide production, and corrosive chemical slurries with suspended solids.
For applications not listed above or requiring specific operating conditions:
We recommend contacting Changyupump to obtain a solution tailored to your actual slurry composition, particle size distribution, pH value, temperature, flow rate, head, and on-site flushing water availability.
Nous fournissons une documentation technique complète, des conseils de sélection et une assistance technique pour vous aider à trouver la solution la mieux adaptée à votre application de boue spécifique. Des conceptions personnalisées sont disponibles pour répondre à des exigences particulières en matière de hauteur de chute, de débit ou de corrosion.
Besoin d'une réponse rapide ou d'un devis personnalisé ? Notre équipe répond dans les 24 heures avec un soutien personnalisé.
Courriel : [email protected]
WhatsApp : +86-13651913727
Advantages of the Horizontal Slurry Pump
High Head
The PGY series features a design with a larger impeller diameter, delivering a maximum single-stage head of approximately 100 metres. For applications requiring long distances or significant elevation differences, there is no need to connect multiple pumps in series, resulting in a simpler system.
Flow-passing components made from high-chromium alloys
We do not use a single material across the board. BTMCr27, BTMCr28 and BTMCr33 are selected to suit different levels of corrosion and wear. For example, BTMCr28 is used for FGD applications where pH is below 4, whilst BTMCr33 is used for strong acids containing oxygen. Other options include austenitic stainless steel and duplex stainless steel.
Dual-casing structure
The outer casing bears the pressure, whilst the inner flow components (impeller, sleeve, and front and rear wear plates) can be replaced individually. During on-site replacement, there is no need to disconnect the inlet and outlet piping, significantly reducing maintenance time.
Flexible shaft seal solutions
Auxiliary impeller + packing seal: Low-pressure flushing water is sufficient, with simple maintenance
Packing seal only: When no auxiliary impeller is present, higher-pressure flushing water is required
Double-face mechanical seal: Zero-leakage requirement
Auxiliary impeller + mechanical seal: Reduces seal chamber pressure, requiring lower flushing water pressure
PGY Series Horizontal Slurry Pump – Section View, Parts & Technical Data
This section shows how the PGY horizontal slurry pump is built. Exploded view with numbered components. Wetted parts material table (BTMCr27 / Cr28 / Cr33 / duplex SS). Complete model list with flow, head, speed, and motor power. Download the full PDF for field selection or maintenance reference.
Exploded View & Component List
Exploded view below shows PGY wet-end structure. Each numbered part matches field replacement items. Use this for maintenance ordering or assembly reference.
Wetted Parts Material Selection
Material selection determines pump life in abrasive or corrosive slurries. PGY offers graded high chrome alloys and stainless options. Choose by pH, oxygen content, and chloride level.
Material Table：
| Material Code | Description | Dureté | Applicable Conditions |
|---|---|---|---|
| BTMCr27 | 27% chromium corrosion-resistant white iron | ≥56HRC | Wear-resistant white iron providing excellent performance under corrosive conditions |
| BTMCr28 | 28% chromium low carbon high chrome white iron | ≥45HRC | Particularly suitable for FGD and other corrosive applications where pH is below 4 |
| BTMCr33 | 33% chromium erosion and corrosion resistant alloy, high chrome low carbon | ≥35HRC | Handles oxygen-containing slurries with pH not lower than 1, such as phosphoric acid processes |
Other Available Materials
Other wetted parts materials include corrosion-resistant alloys such as austenitic stainless steel, stainless steel, and duplex stainless steel. If other materials are required, please contact us.
Engineer‘s Notes
- BTMCr27: Standard wear-resistant choice for iron ore, copper ore, coal slurry, and neutral or mildly corrosive conditions.
- BTMCr28: Specifically designed for FGD applications where slurry pH < 4 and chloride content is present.
- BTMCr33: Used for severe combined corrosion and wear, such as phosphoric acid slurry (pH ≥ 1) and oxygen-containing media.
- Duplex Stainless Steel: Recommended when chloride concentration is extremely high or when high chrome alloys cannot tolerate the chemical environment.
Shaft Seal Type
Shaft seal is one of the most critical components in a centrifugal slurry pump. PGY offers four sealing options. Selection depends on flushing water pressure, leakage requirement, and site conditions.
Gland packing with auxiliary impeller double seal
The auxiliary impeller acts as a turbine, reducing the pressure of slurry escaping from the rear of the impeller. The gland packing seal serves as a secondary seal, where multiple packing rings are compressed by the stuffing box and wear-resistant sleeve, requiring only low-pressure flushing water.
This is the standard sealing type for PGY pumps, offering easy maintenance and low cost.
Gland packing seal
Where an impeller is not applicable, a soft gland packing seal is used. Several soft packing rings are compressed by the stuffing box and wear-resistant sleeve.
Since there is no auxiliary impeller to reduce pressure by centrifugal action, higher-pressure flushing water must be introduced into the packing through a water seal ring to cool the packing and prevent casing leakage.
Garniture mécanique
A mechanical seal consists of a stationary face and a rotating face, which are pressed together under mechanical and hydraulic forces to prevent leakage.
It provides the best sealing performance and is used in zero-leakage conditions.
The PGY pump adopts a double mechanical seal, requiring the flushing water pressure to be higher than the pressure in the sealing chamber.
Mechanical seal with auxiliary impeller
An auxiliary impeller is installed between the mechanical seal and the impeller. The auxiliary impeller acts as a turbine, reducing the pressure in the sealing chamber. Therefore, this sealing arrangement requires a lower flushing water pressure than a conventional mechanical seal, as long as a good water flow is maintained.
Important Note
The above types of shaft seals require appropriate flushing water. The flow rate and pressure of the flushing water will depend on the pump parameters. For other special shaft seal options, please contact us.
Shaft Seal Selection Guide
| Type de joint | Flushing Water Pressure Requirement | Leakage Level | Recommended Application |
|---|---|---|---|
| Gland packing with auxiliary impeller | Faible | Slight dripping | Standard configuration; sites with limited water pressure |
| Gland packing only | Haut | Slight dripping | Applications where auxiliary impeller is not applicable |
| Double garniture mécanique | Higher than seal chamber pressure | Aucune fuite | Strict environmental requirements; no drip allowed |
| Mechanical seal with auxiliary impeller | Lower than conventional mechanical seal | Aucune fuite | Zero leakage required but flushing water pressure is limited |
Additional Note
The flow rate and pressure of the flushing water will depend on the pump parameters. For other special shaft seal options, please nous contacter.
Download PGY Product PDF
Need complete technical data for field selection or project documentation? Download the full PGY series PDF. Includes all performance tables, material specifications, seal options, dimensional drawings, and maintenance parts list.
Why choose Changyu Pump?
Because we understand slurry pump applications better than anyone else
1. Validated under real-world conditions
Our material and sealing configurations are based on genuine customer feedback and experimental data. BTMCr28 was developed specifically for low-pH conditions in FGD systems, whilst BTMCr33 withstands corrosion in phosphoric acid slurries with a pH of 1 or higher. These improvements stem from real-world feedback from mines, power stations and chemical plants.
2. Material Selection Based on the Medium
Although all referred to as ‘high-chromium alloys’, Cr27, Cr28 and Cr33 differ in both price and performance. We will ask specific questions: What is the pH level? Are the particles sharp or rounded? etc., before recommending the appropriate material. We provide every customer with the pump offering the best value for money.
3. Traceable Performance Data
Every PGY pump is accompanied by performance test records before leaving the factory. Actual measured values for flow rate, head, efficiency and NPSHr are available for verification; we do not simply provide a theoretical curve diagram.
4. Rapid Spare Parts Response
We maintain stock of commonly used flow-through components (impellers, wear plates, shaft sleeves) covering most specifications. In urgent cases, we dispatch within 24 hours.
5. Flexible Sealing Solutions – No Need for Site Modifications
We customise pumps to suit your site conditions. Low water pressure? Opt for a secondary impeller with packing. Requiring zero leakage? Choose a double-ended mechanical seal. Need both low water pressure and zero leakage? Combine a secondary impeller with a mechanical seal. One pump body, four sealing options – no need to modify your pipework. We can meet your requirements.
For further services and customised solutions, contact us today.
Courriel : [email protected]
WhatsApp : +86-13651913727
How to Select the Right Horizontal Slurry Pump
Four Questions to Filter Out Unsuitable Pumps
Selection is not about picking the max flow from a catalog. Answer these four questions in order, and you will narrow down to 2-3 candidate models.
Question 1: What is the slurry composition?
- Solid particle type (sharp / rounded), concentration (wt%), maximum particle size
- pH value, chloride content, oxygen presence or not
| État de la boue | Matériau recommandé |
|---|---|
| pH ≥ 6, neutral or mildly corrosive | BTMCr27 |
| pH < 4, FGD or chloride-containing | BTMCr28 |
| pH 1~4, oxygen-containing (e.g., phosphoric acid) | BTMCr33 |
| High chloride or strong acid | Duplex stainless steel |
Question 2: What are the hydraulic parameters?
- Design flow rate (m³/h)
- Required head (m)
- Must check: NPSHa > pump NPSHr
PGY single-stage head reaches approximately 100 meters maximum. If required head exceeds 70 meters, prioritize high-head models such as 150PGY-50 or 200PGY-65. If head is below 40 meters, consider speed reduction or smaller impeller options to avoid motor oversizing.
Question 3: What is the on-site flushing water condition?
| Flushing Water Pressure | Leakage Requirement | Recommended Seal |
|---|---|---|
| Low pressure (<2 bar) | Slight dripping allowed | Gland packing with auxiliary impeller (standard) |
| High pressure (≥3 bar) | Slight dripping allowed | Gland packing only |
| Any pressure | Aucune fuite | Double garniture mécanique |
| Low pressure (<2 bar) | Aucune fuite | Mechanical seal with auxiliary impeller |
Question 4: What is the site maintenance practice?
- Is periodic gland packing adjustment acceptable?
- Are spare parts replaced in-house or outsourced?
- Is there budget for stocking common wetted parts?
If on-site maintenance capability is limited, choose gland packing with auxiliary impeller – the simplest to maintain. If maintenance-free operation is required, mechanical seal is more suitable, but stable flushing water supply must be guaranteed.
Selection Summary
| Priority | Decision Item | Action |
|---|---|---|
| 1 | Slurry pH / chloride content | Determine material (Cr27/Cr28/Cr33/duplex SS) |
| 2 | Flow rate + head | Determine model and speed |
| 3 | Flushing water pressure + leakage requirement | Determine seal type |
| 4 | NPSHa vs NPSHr | Check cavitation margin |
If you still have uncertainty after answering these four questions, contact changyupump directly. Tell us your slurry composition, flow rate, head, and on-site water pressure. We will match the solution. You don‘t need to be a pump expert. You just need to describe your operating conditions clearly.
Nous contacter
Courriel : [email protected]
Tel: +86 13651913727
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