PSVD2-13E/16E/17E/19E/21E/26E/27E/57E China Hydraulic Charge Pump Overview

The PSVD2 series hydraulic charge pumps (including models 13E, 16E, 17E, 19E, 21E, 26E, 27E, and 57E) are high-performance auxiliary gear pumps designed to provide stable and continuous charge oil supply for hydraulic piston pump systems.

These pumps play a critical role in maintaining proper inlet pressure, ensuring lubrication and cooling of internal components, and supporting the efficient operation of the main hydraulic system. Designed for the China market, they offer a cost-effective and reliable alternative to original parts without compromising performance.

Core Features & Advantages

• Low Noise & High Efficiency：Optimized gear design ensures smooth operation, low noise, and high volumetric efficiency.

•  Improve Main Pump Stability：Provides stable charge oil flow to maintain proper lubrication and cooling of the main pump.

• Extend Hydraulic System Service Life：Reliable charge oil supply reduces wear and helps extend the lifespan of the hydraulic system.

• Multiple Control Options：Compatible with different hydraulic control systems to meet various application requirements.

Purpose of Hydraulic Charge Pump

In PSVD2 series hydraulic systems, the charge pump serves as a fundamental support unit that ensures the main pump operates under optimal conditions. Models including 13E, 16E, 17E, 19E, 21E, 26E, 27E, and 57E all rely on a dedicated hydraulic charge pump to maintain system balance, efficiency, and durability.

The primary purpose of the hydraulic charge pump is not only to supply oil, but also to create a stable internal environment for the entire hydraulic system.

Specifications

Applications

1. Hydraulic drives with high pressure, heavy load, variability, large displacement, long service life, and reliability.

2. Steel metallurgy and forging machinery

3. Ceramic and refractory material presses

4. Shipping and hydroelectric systems

5. Rubber vulcanization and paper production

6. Petroleum equipment

7. Construction and mobile machinery

8. Railway and tunneling machines

Packaging & Delivery

Charge pumps are typically packaged securely to prevent damage during transit. The packaging includes:

Protective Wrapping: To safeguard the pump from environmental damage.

Custom Crates: For larger, heavier pumps, ensuring safe handling.

Documentation: Includes installation, maintenance instructions, and warranty details.

Delivery time depends on the model, customizations, and location but typically ranges from 2 to 6 weeks from the order date.

PSVD2 China Hydraulic Charge Pump FAQ 

1. What is the function of the PSVD2 charge pump?

The PSVD2 charge pump provides a continuous low-pressure oil supply to the main hydraulic pump, ensuring proper inlet pressure, lubrication, and cooling for stable system operation.

2. Which models are included in the PSVD2 charge pump series?

This series includes PSVD2-13E, 16E, 17E, 19E, 21E, 26E, 27E, and 57E, covering a wide range of hydraulic system requirements for different equipment sizes.

3. What type of pump is the PSVD2 charge pump?

It is a fixed-displacement external gear pump, known for its simple structure, stable performance, and high reliability.

4. What machines are these charge pumps suitable for?

They are widely used in hydraulic excavators (3–20 ton), construction machinery, agricultural equipment, and industrial hydraulic systems.

5. Can these pumps replace original PSVD2 charge pumps?

Yes, they are designed as direct replacement parts with equivalent dimensions and performance, offering a more cost-effective alternative.

6. How does the charge pump prevent cavitation?

By maintaining stable inlet pressure and continuous oil flow, the charge pump prevents air from entering the main pump, reducing the risk of cavitation.

7. What are common signs of charge pump failure?

Common symptoms include low system pressure, abnormal noise, overheating, slow response, and reduced hydraulic efficiency.

8. How to maintain the PSVD2 charge pump for longer service life?

Keep hydraulic oil clean, replace filters regularly, maintain proper oil levels, and avoid operating under extreme conditions to ensure long-term reliability.

Certifications & Quality Assurance

Charge pumps are manufactured in compliance with international standards, ensuring high performance and reliability:

ISO 9001: Certified for quality management systems.

CE Certification: Ensures compliance with European safety, health, and environmental protection standards.

RoHS Compliance: Ensures the pump does not contain hazardous materials.

Factory Testing: Every pump is rigorously tested for performance, pressure, and leak integrity before shipping.

FAQ

1.How does the variable displacement work?

The pump's flow is adjusted by changing the angle of an internal swash plate. As the swash plate angle changes, the stroke length of the pistons varies, which in turn changes the volume of fluid displaced per rotation, allowing the flow rate to adapt to the system's needs.

2.What's our advantages?

Factory established in 2005;

With a great deal of production experience;

80+ employees become the professional team;

Constant updated ERP system ensure efficiency of work;

Sophisticated equipment ehanced the accuracy of products;

Professional salesmen provide the greast service;

With a large number of famous customers all over the world;

Great after-sales service;

With the long term cooperation with famous logistics and express company in China,provide the better goods service.

3.What is your payment terms?

Small order/sample order,full payment in advance; Big orders send the first payment 30% before the production,and the balance before shippment.We'll show the photos of the products and packages before delivery.

4.Can you make my own brand on the products?

Of course we can. Just send me your logo  we can make it for you.

5.What is our main export market?

America(40.5%):USA, Canada, Argentina, Brazil

Europe(30.8%):Italy,Germany,England,Holland,Spain,Swiss,Finland,Russia,Poland.

Asia(23.5%):Korea,singapore,India,Turkey,Vietnam,Saudi Arabia,Syria, Israel,Lebanon.

Others(5.8%).

The Green hydraulic pump manufacturing facility is a specialized industrial plant that focuses on producing hydraulic pumps and related components. These factories are equipped with advanced machinery and technology to fabricate high-quality pumps designed for a wide range of applications, from heavy equipment and machinery to automotive and industrial systems.

The production process typically involves precision engineering, where raw materials like metals and alloys are processed into pump components such as gears, pistons, cylinders, and seals. These parts are then assembled into fully functional hydraulic pumps, which are tested for performance and quality control to ensure reliability, efficiency, and durability under various working conditions.

Green Hydraulic's manufacturing facilities for hydraulic pumps maintain stringent quality standards, often adhering to international certifications, to meet the expectations of customers in industries such as construction, agriculture, automotive, and manufacturing.

All hydraulic pumps produced by Green Hydraulic have undergone compliance testing, ensuring their quality and reliability.

To meet the diverse needs of different industries, the green hydraulic offer customization options, such as specialized seals, materials, and pump configurations. These facilities often work closely with engineering teams to develop tailored solutions for specific applications, from high-pressure systems to low-flow, high-efficiency pumps.

Each pump undergoes a rigorous quality control process, where pressure tests and performance assessments are conducted to ensure that the pumps meet the required standards for flow rate, pressure capacity, and durability.