CHDF Stainless Steel Horizontal Multistage Pump

CHDF Stainless Steel Horizontal Multistage Pump

CHDF Stainless Steel Horizontal Multistage Pump | Sectional multistage SS wetted end for clean & mildly corrosive duty

  • Stainless wetted end: Stamped-welded SS plates for corrosion-resistant fluid handling.
  • Sectional multistage build: Stage configuration to match required system pressure with stable output.
  • Extended-shaft horizontal drive: Rigid alignment for smooth continuous-duty operation.
  • Defined nozzle layout: Axial suction + radial discharge for straightforward piping integration.
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Product Overview

CHDF Stainless Steel Horizontal Multistage Centrifugal Pump is a horizontal stainless steel multistage centrifugal pump designed for high-head clean water and mildly corrosive liquid transfer.

It addresses insufficient pressure in single-stage systems and compensates for pressure loss in long pipelines or multi-floor installations.

It is applied in water treatment units, HVAC circulation systems, industrial process water supply, and high-rise building booster systems.

✔ This series is engineered for high-pressure stainless steel multistage boosting in continuous-duty water systems.

Model Designation

CHDF Stainless Steel Horizontal Multistage Pump

 Applications

  • High-rise building constant-pressure water supply systems
  • Reverse osmosis (RO) water treatment pre-boosting
  • Industrial process water circulation and filtration systems
  • HVAC chilled and hot water circulation loops
  • Cleaning systems and equipment flushing lines

Engineering Advantages

  • Horizontal multistage stainless steel hydraulic structure ensures stable axial alignment and predictable performance curve.
  • Stainless steel wetted parts provide corrosion resistance for clean and mildly aggressive media.
  • Sectional stage configuration allows pressure build-up through impeller stacking for controlled head generation.
  • Mechanical seal configuration supports continuous-duty operation with reduced leakage risk.
✔ Engineered with stainless steel multistage hydraulic design to achieve compact installation, high efficiency, and reliable pressure boosting.

System Components

The CHDF Stainless Steel Horizontal Multistage Centrifugal Pump mainly consists of:

  • Pump casing (stainless steel sections)
  • Multistage impellers
  • Diffusers
  • Pump shaft
  • Mechanical seal assembly
  • Bearing housing and deep groove ball bearings
  • Motor coupling

Technical Specifications

Service Conditions

  • Suitable for clean water or liquids with similar physical and chemical properties
  • Ambient temperature: ≤ 40°C
  • Relative humidity: ≤ 95%

Operating Conditions

  • Flow rate: 0.5–22 m³/h
  • Head: 5.5–55 m
  • Power range: 0.37–4 kW
  • Speed: 2900 rpm
  • Liquid temperature: ≤ 80°C
  • Working pressure: ≤ 1.0 MPa

Detailed parameter tables are provided below.

Installation & Dimensions

Outline Drawing

CHDF Stainless Steel Horizontal Multistage Pump

Pump Parts & Materials List

Item No. Name Material AISI/ASTM Item No. Name Material AISI/ASTM
1 Suction Casing Stainless Steel AISI304 8 Mechanical Seal
2 End Cover Stainless Steel AISI304 9 Motor End Cover Aluminum Alloy
3 Bearing Tungsten Carbide 10 Base Cast Iron ASTM258
4 Impeller Stainless Steel AISI304 11 Tie Rod Stainless Steel AISI304
5 Shaft Stainless Steel AISI304 12 Diffuser Stainless Steel AISI304
6 Discharge Diffuser Stainless Steel AISI304 13 Support Diffuser Stainless Steel AISI304
7 Discharge Casing Stainless Steel AISI304 14 Impeller Spacer Sleeve Stainless Steel AISI304

Performance Data

Model Motor N (KW) Flow Rate Q (m3/h) 0.5 1.0 1.5 2.0 2.5 3.0 3.5
CHDF2-20 0.37 Head H (m) 19 18 16 14 13 11 9
CHDF2-30 0.55 Head H (m) 28 27 24 21 20 17 14
CHDF2-40 0.55 Head H (m) 36 34 32 28 26 23 17
CHDF2-50 0.55 Head H (m) 46 43 40 35 33 28 22
CHDF2-60 0.75 Head H (m) 54 50 48 42 38 33 25
Model Motor N (KW) Flow Rate Q (m3/h) 1 2 3 4 5 6 7
CHDF4-20 0.55 Head H (m) 19 18 16 15 13 10 7
CHDF4-30 0.55 Head H (m) 28 27 24 22 19 15 10
CHDF4-40 0.75 Head H (m) 38 36 32 30 26 20 14
CHDF4-50 1.1 Head H (m) 46 44 41 38 32 26 20
CHDF4-60 1.1 Head H (m) 55 53 50 45 37 31 26
Model Motor N (KW) Flow Rate Q (m3/h) 5 6 7 8 9 10 11
CHDF8-10 0.75 Head H (m) 9.5 9.3 9 8.5 7.5 6.5 5.5
CHDF8-20 0.75 Head H (m) 19 18.5 18 17 15 13 11
CHDF8-30 1.1 Head H (m) 29 28 27 25.5 22.5 20 17.5
CHDF8-40 1.5 Head H (m) 39 38 36 34 30 26.5 22.5
CHDF8-50 2.2 Head H (m) 49 47 45 42.5 38 33.5 28
Model Motor N (KW) Flow Rate Q (m3/h) 10 12 14 16 18 20 22
CHDF16-10 1.1 Head H (m) 12 11.5 10.5 10 9 7.5 6.5
CHDF16-20 2.2 Head H (m) 24 23 22 21 19 17 14.5
CHDF16-30 3 Head H (m) 37 36 34 32 30 27 23
CHDF16-40 4 Head H (m) 50.5 49 46 43 40.5 36 31.5

Installation Diagram

CHDF Stainless Steel Horizontal Multistage Pump

Model Motor L1(mm) L2(mm) L3(mm) D(mm) H(mm) K(mm) Weight (kg)
CHDF2-20 Single-phase 305 87 84 145 215/230 /96 15
CHDF2-30 Single-phase 323 105 102 145 215/230 /96 15
CHDF2-40 Single-phase 341 123 120 145 215/230 /96 15
CHDF2-50 Single-phase 359 141 138 145 215/230 /96 15
CHDF2-60 Single-phase 422 159 156 170 225/245 /100 17

Installation Diagram（2）

CHDF Stainless Steel Horizontal Multistage Pump

Model Motor L1(mm) L2(mm) L3(mm) D(mm) H(mm) K(mm) Weight (kg)
CHDF4-20 Single-phase 329 105 102 145 215/230 /96 15
CHDF4-30 Single-phase 356 132 129 145 215/230 /96 15
CHDF4-40 Single-phase 416 162 156 170 225/245 /100 17
CHDF4-50 Single-phase 455 188 183 170 225/245 /100 17
CHDF4-60 Single-phase 482 213 210 170 225/245 /100 17

Installation Diagram（3）

CHDF Stainless Steel Horizontal Multistage Pump

Model Motor L1(mm) L2(mm) L3(mm) D(mm) H(mm) K(mm) Weight (kg)
CHDF8-10 Single-phase 395 126 108 170 230/252 /100 20
CHDF8-20 Single-phase 395 126 108 170 230/252 /100 20
CHDF8-30 Single-phase 425 156 138 170 230/252 /100 25
CHDF8-40 Single-phase 490 186 168 180 240/260 /100 28
CHDF8-50 Single-phase 520 216 198 180 240/260 /100 30

Installation Diagram（4）

CHDF Stainless Steel Horizontal Multistage Pump

Model Motor L1 L2 L3 H D E N A M B j d k Weight (kg)
CHDF16-10 Single-phase 423 151 126 230/265 180 227 117 130 108 160 138 9 /100 17.5
CHDF16-20 Single-phase 455 151 126 240/270 180 228 118 130 108 160 138 9 /100 27
CHDF16-30 Single-phase 561 196 171 270/ 195 240 130 130 108 160 138 9 33
CHDF16-40 Single-phase 621 339 216 270/ 220 230 120 230 109 190 140 12 41

How to Select a Pump Model

  • Determine required flow rate and total dynamic head to ensure duty point falls within high-efficiency region.
  • Confirm liquid temperature and material compatibility with stainless steel configuration.
  • Evaluate inlet pressure conditions to avoid cavitation.
  • Consider installation layout (horizontal footprint and motor power supply).
✔ Model selection shall be based on confirmed duty point, hydraulic curve verification, and system pressure requirement.

Engineering Notes

  • The pump is non-self-priming and requires flooded suction or priming before operation.
  • Axial thrust is controlled through multistage hydraulic balancing design.
  • Horizontal installation ensures convenient maintenance access.
  • Designed for continuous operation under rated hydraulic load.

Compliance & Quality Assurance

  • Hydraulic performance test conducted for each pump before delivery
  • Pressure casing strength test
  • Dynamic balance verification for rotating components
  • Material inspection and traceability for stainless steel components

安全通知 

  • Do not operate under dry-running condition
  • Ensure suction priming before startup
  • Disconnect power before maintenance
  • Operate within specified pressure and temperature limits

OEM & Customization

This pump series supports engineered configuration and duty-based matching. Technical adjustments can be made according to system requirements and installation conditions.
Available options include:

  • Motor voltage & frequency
  • Mechanical seal type and configuration
  • Wetted parts material selection
  • Surface coating and corrosion protection

Configuration is determined based on duty point and project specifications.

FAQs

Q1: Can the CHDF pump operate under VFD control?
Yes, it can operate under variable frequency drive provided motor compatibility is confirmed.

Q2: What is the maximum allowable working pressure?
The maximum working pressure is 1.0 MPa.

Q3: What sealing options are available?
Standard mechanical seal; optional upgraded seal materials for higher temperature or aggressive media.

Q4: Is the pump self-priming?
No, it requires priming before startup.

Q5: What liquid temperature can it handle?
Maximum liquid temperature is 104°C.

Q6: What type of bearings are used?
Single-row deep groove ball bearings are used.

Q7: Can the pump handle mildly corrosive liquids?
Yes, within stainless steel compatibility limits.