CYZ-A Horizontal Self-Priming Oil Pump

CYZ-A Horizontal Self-Priming Oil Pump

CYZ-A Horizontal Self-Priming Oil Pump | Fast-priming light-oil transfer

  • Self-priming oil duty: Quick suction-lift priming.
  • Light-oil service: Diesel, gasoline, kerosene, similar oils.
  • Stable running: Smooth continuous transfer.
  • Easy maintenance: Standard parts, service-friendly.
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Product Overview

CYZ-A Horizontal Self-Priming Oil Pump is a single-stage, horizontal, self-priming centrifugal pump designed for transferring gasoline, diesel, kerosene, and other light oils.

It solves the issue of air removal in the suction line, ensuring stable and continuous operation even during frequent starts and stops.

Ideal for use in oil storage facilities, marine cargo systems, and tank truck operations where self-priming and high efficiency are required.

✔ The CYZ-A Horizontal Self-Priming Oil Pump is designed to provide reliable and efficient oil transfer with self-priming capability, ensuring continuous operation without the need for external priming devices.

Model Designation

CYZ-A Horizontal Self-Priming Oil Pump

Applications

• Petroleum storage and transfer systems

• Marine cargo oil systems

• Tank truck loading and unloading operations

• Firefighting and ballast water systems

• Cooling water circulation systems in industrial processes

Engineering Advantages

• Self-priming capability: No foot valve required, simplifying system layout and reducing installation complexity.

• Reliable performance: Quick self-priming ensures uninterrupted operation even in fluctuating suction conditions.

• High-temperature adaptability: Capable of transferring fluids with temperatures up to 80°C, including seawater and freshwater.

• Durable construction: Built with corrosion-resistant materials, ensuring long-term, stable operation in harsh environments.

✔ Engineered for efficient, self-priming oil transfer with minimal maintenance in demanding applications.

System Components

The CYZ-A Horizontal Self-Priming Oil Pump consists of the following main components:

• Pump casing (integrating suction chamber, liquid storage chamber, and separation box)

• Self-priming mechanism (air-liquid mixing and separation)

• Corrosion-resistant mechanical seals

• Cooling chamber (optional for higher temperature applications)

• Pump shaft and bearing components

Technical Parameters

Service Conditions

• Applicable Fluids: Gasoline, kerosene, diesel, aviation fuel, seawater, or freshwater

• Operating Temperature: ≤ 80°C

Operating Conditions

  • Flow Rate: 3.2 – 500 m³/h
  • Head: 12 – 80 m
  • Power Range: 0.75 – 110 kW
  • Speed: 1450 / 2900 rpm
  • Liquid Temperature: ≤ 80°C
  • Working Pressure: ≤ 1.0 MPa

Detailed parameter tables are provided below.

Specifications & Installation

Outline Drawing

CYZ-A Horizontal Self-Priming Oil Pump Structural Diagram

Performance Data

1 Coupling 2 Pump Shaft 3 Bearing 4 Mechanical Seal 5 Bearing Housing 6 Pump Shell 7 Discharge Seat
8 Suction Seat 9 Front Sealing Ring 10 Impeller 11 Rear Cover 12 Water Ring 13 Liquid Injection Hole 14 Return Liquid Hole

Performance Parameters

Model
Flow Rate (m³/h)
Head (m)
Efficiency (%)
Speed (rpm)
Motor Power (kW)
Diameter
(m3/h)
(l/s)
 (m) (%) (r/min) (KW)
suction
discharge
25CYZ-A-20 3.2 0.9 20 6.5 2900 0.75 25 25
25CYZ-A-32 3.2 0.9 32 6.5 2900 1.1 25 25
40CYZ-A-20 6.3 1.8 20 6.5 2900 1.1 40 32
40CYZ-A-40 10 2.8 40 6.5 2900 4 50 40
50CYZ-A-12 15 4.2 12 6.5 2900 1.6 50 50
50CYZ-A-20 18 5 20 6.5 2900 2.2 50 50
50CYZ-A-30 20 5.5 30 6.5 2900 4 50 50
50CYZ-A-40 10 2.8 40 6.5 2900 4 50 50
50CYZ-A-50 12.5 3.5 50 6.5 2900 5.5 50 50
50CYZ-A-60 15 4.2 60 6.5 2900 7.5 50 50
50CYZ-A-75 20 5.6 75 6.5 2900 11 50 50
65CYZ-A-15 30 8.3 15 6.5 2900 3 65 50
65CYZ-A-32 25 6.9 32 6.5 2900 5.5 65 50
80CYZ-A-13 35 9.7 13 6 2900 3 80 65
80CYZ-A-17 43 12 17 6 2900 4 80 65
80CYZ-A-22 40 11.1 22 6 2900 5.5 80 65
80CYZ-A-25 50 13.9 25 6 2900 7.5 80 80
80CYZ-A-32 50 13.9 32 6 2900 7.5 80 80
80CYZ-A-55 60 16.7 55 6 2900 18.5 80 80
80CYZ-A-70 60 16.7 70 6 2900 22 80 80
100CYZ-A-20 100 27.8 20 6 2900 11 100 80
100CYZ-A-40 100 27.8 40 6 2900 22 100 100
100CYZ-A-40A 100 27.8 40 6 2900 22 100 100
10065CYZ-A-65 100 27.8 65 6 2900 30 100 100
100CYZ-A-75 70 19.4 75 6 2900 30 100 100
150CYZ-A-45 170 47.2 45 5 2900 37 150 100
150CYZ-A-55 170 47.2 55 5 2900 45 150 100
150CYZ-A-65 170 47.2 65 5 2900 55 150 100
150CYZ-A-80 160 44.4 80 5 2900 55 150 100
200CYZ-A-63 280 77.8 63 5 1450 90 200 150
250CYZ-A-50 400 111.1 50 5 1450 90 250 200
300CYZ-A-50 500 138.9 50 5 1450 110 300 250

Performance Curves

CYZ-A Horizontal Self-Priming Oil Pump

Outline Drawing（2）

CYZ-A Horizontal Self-Priming Oil Pump

Performance Data（2）

1 Pump
2 Pressure Gauge
3 Discharge Vertical Pipe
4 Suction Hard Pipe
5 Elbow
6 Flow Control Valve
7 Discharge Pipeline
8 Liquid Filling Plug
9 Vacuum Gauge

Precautions

Installation &Requirements

  1. When the pump and electric motor are directly coupled, ensure the coaxial alignment of the pump shaft and motor output shaft. The accuracy of the pump installation significantly affects the pump’s stability and service life, so installation and alignment must be performed with care.
  2. The pump coupling must be securely fastened with nuts and locked in place to prevent loosening. If the nuts loosen, it may cause the impeller to move, resulting in mechanical failure.
  3. To maintain a certain amount of stored liquid in the pump and prevent dry friction of the mechanical seal, ensure that the pump inlet is above the centerline of the pump shaft.
  4. When installing the suction pipeline, note the following:
    • A. The suction port height should not exceed 5.5 meters. If possible, install the suction port as low as possible and minimize the length of the suction pipe. This helps shorten the self-priming time and improve self-priming performance.
    • B. Valves, flanges, etc., in the suction pipeline should be free of air leaks and liquid leakage. No air leaks are allowed in the suction pipeline.
    • C. Prevent solid debris from entering the pump. A filter should be installed in the suction pipeline. The effective filtration area of the filter should be 2-3 times the cross-sectional area of the suction pipe, and the filter should be regularly checked.
    • D. The suction and discharge pipelines should have their own supports, and the pump body should not bear the load of the pipelines.
  5. During the installation of the self-priming pump, ensure the static grounding resistance of the pump and pipeline meets the required specifications.
  6. Carefully check the pump casing and pipeline for any debris, such as stones or iron filings, during installation.
  7. Correct the installation gap and coaxial alignment of the pump coupling and motor coupling. The allowable deviation in misalignment is 0.1 mm. Adjust the height difference between the pump shaft and the motor shaft by adding copper or iron shims under the base.
  8. After 3-4 hours of operation, perform a final check. If no abnormal phenomena occur, the installation can be considered satisfactory. During trial operation, check the bearing temperature, which should not exceed 70°C.
  9. If the pump bearing housing has a cooling chamber, a cooling water connection should be provided with an internal diameter of 12 mm for the hose or plastic pipe, with a thread size of M12x1.25.
  10. If a check valve is installed in the pump’s discharge pipeline and it prevents the pump from discharging gas smoothly during self-priming, a small vent pipe and valve should be added at the pump’s outlet.

Pump Pressure Control Range Chart

Pump Model and Fluid Type water gasoline-powered pump kerosene diesel
25CYZ-A-20 0.13-0.23 0.09-0.15 0.10-0.18 0.10-0.19
25CYZ-A-32 0.28-0.38 0.20-O.27 0.21-0.29 0.23-0.32
40CYZ-A-20 0.15-0.25 0.11-O.18 0.12-0.20 0.12-0.2l
40CYZ-A-40 0.33-O.41 0.24-0.30 0.26-0.33 0.28-0.35
50CYZ-A-12 0.10-0.15 0.07-0.11 0.08-O.12 0.08-0.13
50CYZ-A-20 0.15-O.25 0.11-0.18 0.12-0.20 0.12-0.21
50CYZ-A-30 0.29-0.39 0.21-0.28 0.22-O.30 0.24-0.33
50CYZ-A-35 0.30-0.40 0.22-0.29 0.23-0.31 0.25-0.33
50CYZ-A-40 0.33-0.41 0.24-0.30 0.26-O.33 0.28-O.35
50CYZ-A-50 0.45-0.64 O.33-0.47 0.36-0.46 0.38-0.49
50CYZ-A-60 0.55-0.65 0.40-0.47 0.48-0.60 0.47-0.55
50CYZ-A-75 0.72-0.78 0.53-O.57 0.58-0.62 0.61-0.66
65CYZ-A-15 0.12-0.20 0.09-O.13 0.09-0.14 0.10-0.15
65CYZ-A-32 0.29-0.39 0.21-0.28 0.22-O.30 0.24-0.33
80CYZ-A-13 0.10-0.15 0.07-0.11 0.08-0.12 0.08-0.13
80CYZ-A-17 0.13-0.21 0.09-0.15 0.10-O.17 0.11-O.18
80CYZ-A-22 0.19-0.26 0.13-0.20 0.14-0.21 0.14-0.22
80CYZ-A-25 0.21-0.28 O.15-0.20 0.17-0.22 0.18-0.24
80CYZ-A-32 0.28-0.36 0.20-O.26 0.22-0.29 0.24-0.31
80CYZ-A-55 0.54-0.62 0.39-O.45 0.43-0.50 0.46-0.53
80CYZ-A-70 0.66-0.76 0.48-0.55 0.53-0.61 0.56-0.65
100CYZ-A-20 0.18-0.28 0.14-0.22 0.15-O.23 O.15-0.24
100CYZ-A-40 0.37-0.49 0.27-0.36 0.30-O.39 0.31-0.39
100CYZ-A-40A 0.35-0.46 0.26-0.34 0.28-0.37 0.30-O.39
100CYZ-A-65 0.60-0.68 0.44-0.50 0.48-0.54 0.51-0.58
100CYZ-A-75 0.72-0.78 0.53-0.57 0.58-O.63 0.61-0.66
150CYZ-A-55 0.52-0.58 0.38-0.42 0.42-0.46 0.44-0.49
150CYZ-A-65 0.60-0.66 0.44-0.48 0.48-0.53 0.51-0.56
150CYZ-A-80 0.72-0.77 0.53-0.56 0.56-O.62 0.61-0.65
200CYZ-A-63 0.63-0.69 0.45-O.5l 0.51-O.53 0.53-0.58
250CYZ-A-50 0.45-0.60 0.33-0.44 0.36-0.46 0.38-O.49

How to Select a Pump Model

• Identify required flow rate for your system based on the oil transfer volume.

• Choose the appropriate pump head depending on your system’s pressure requirements.

• Ensure compatibility with the fluid type being transferred (e.g., gasoline, kerosene, or diesel).

• Consider the operating temperature to select a model with the appropriate seals and materials.

✔ Select the model that meets the specific operational and fluid transfer needs of your application.

Engineering Notes

• Pre-fill the pump casing with liquid before startup to ensure quick self-priming.

• Monitor for air pockets in the suction line to avoid inefficient pumping and cavitation.

• Check seals and bearings regularly for wear and replace them as needed to maintain performance.

• Use proper filtration to avoid clogging the pump and reducing flow efficiency.

Compliance & Quality Assurance

• Factory testing to ensure proper operation under designed flow and pressure conditions.

• Hydraulic performance testing to validate system efficiency and stability.

• Material traceability for all wetted parts to ensure high-quality construction.

• Third-party inspections available for additional validation and assurance.

Safety Notice

• Ensure proper priming before starting the pump to avoid dry running.

• Monitor suction pressure to prevent cavitation and pump damage.

• Disconnect power before performing any maintenance or adjustments.

• Regularly inspect seals for wear and tear to maintain efficiency and prevent leaks.

OEM & Custom

This pump series supports engineered configuration and duty-based matching.

Available options include:

• Motor voltage & frequency

• Mechanical seal type and configuration

• Wetted parts material selection

• Surface coating and corrosion protection

FAQs

Q: What is the maximum allowable fluid temperature?
A: The pump can handle fluids up to 80°C.

Q: Can the pump operate in environments with fluctuating suction conditions?
A: Yes, the pump is designed for reliable operation even with varying suction conditions.

Q: What type of seals are used in the pump?
A: The pump uses corrosion-resistant mechanical seals suitable for various fluids.

Q: What is the recommended maintenance schedule for the pump?
A: It is recommended to inspect the seals and bearings every 6 months and replace as needed.

Q: Can the pump handle seawater?
A: Yes, the pump can handle seawater, making it ideal for marine applications.