A7VK0028MA/10MRSL4P550-0 A7VK Series Polyurethane Metering Piston Pump

As a reliable China factory and professional global supplier specializing in chemical-grade hydraulic metering components, Hengmeisi independently optimizes and produces the A7VK0028MA/10MRSL4P550-0 A7VK Series Polyurethane Metering Piston Pump to solve the pain points of large flow error, poor corrosion resistance and inconvenient parameter adjustment of traditional chemical delivery pumps. The A7VK0028MA/10MRSL4P550-0 belongs to the 6th generation upgraded model of the A7VK series, which is completely different from general engineering hydraulic pumps such as A6V and ordinary A7V open-circuit pumps. It is exclusively designed for closed-circuit and open-circuit quantitative supply systems of polyurethane foaming production lines, focusing on precision micro-flow metering rather than high-power torque output, filling the market gap of professional hydraulic metering pumps for chemical viscous media.

The quality A7VK0028MA/10MRSL4P550-0 A7VK Series Polyurethane Metering Piston Pump adopts a mature bent-axis axial cone piston rotor structure optimized for low-flow and high-precision scenarios. With a rated displacement of 28mL/r, this A7VK series piston pump achieves ultra-stable fluid delivery and ultra-low flow pulsation through precision-machined rotor assembly and customized flow distribution structure. Equipped with unique MA manual precision adjustment mechanism and MRSL4P550 integrated calibration module, the pump supports real-time flow fine-tuning and fixed-value locking, with steady-state metering repeatability controlled within ±0.3%, fully meeting the strict proportioning requirements of polyurethane combined materials. Different from ordinary hydraulic pumps that only adapt to standard hydraulic oil, the A7VK0028MA/10MRSL4P550-0 is upgraded with special medium-resistant materials and anti-corrosion surface treatment, which can stably transport viscous chemical media such as polyurethane foaming agent and industrial grease without component corrosion and flow deviation.

In terms of pressure resistance and operational stability, the A7VK0028MA/10MRSL4P550-0 has a rated working pressure of 250bar and an instantaneous peak pressure up to 315bar, adapting to long-term continuous quantitative supply operation of chemical production lines. The built-in reinforced bearing group and double-layer sealing structure effectively resist medium erosion and internal pressure impact, avoiding liquid leakage and metering failure caused by long-term conveying of corrosive viscous media. The miniaturized integrated structure reduces the overall installation space of foaming equipment, and the standardized flange and shaft end specifications realize complete interchangeability with traditional A2VK series pumps, supporting direct replacement without modifying the original equipment pipeline and control system, greatly reducing equipment upgrade and maintenance costs for users.

Core Product Advantages

1. Ultra-high Precision Metering & Fixed-value Locking Function

The biggest core advantage of the A7VK0028MA/10MRSL4P550-0 A7VK series metering pump is its professional precision metering performance exclusive for chemical proportioning. Equipped with MA manual precision adjustment assembly and professional scale display device, the pump allows operators to accurately fine-tune flow parameters and lock the adjusted position to prevent flow deviation caused by mechanical vibration and accidental touch during equipment operation. The built-in flow self-calibration module maintains stable output accuracy throughout long-term operation, with steady-state metering repeatability up to ±0.3%. This high-precision control capability ensures accurate proportioning of AB polyurethane materials, effectively avoiding product quality problems such as uneven foaming, inconsistent density and defective finished products caused by inaccurate fluid supply.

2. Special Anti-corrosion & Medium-resistant Structural Design

Different from ordinary hydraulic pumps only suitable for pure hydraulic oil, the A7VK0028MA/10MRSL4P550-0 is fully optimized for viscous and slightly corrosive chemical media. The core rotor components adopt high-hardness alloy materials with special anti-corrosion surface treatment process, which can resist erosion and adhesion of polyurethane materials and industrial grease. The customized double-shaft sealing structure and independent flushing chamber design not only prevent internal medium leakage, but also realize real-time monitoring of sealing wear, which can timely detect sealing failure and protect the external production environment from pollution. The overall anti-aging and anti-adhesion performance is greatly improved, solving the common problems of blockage, corrosion and short service life of ordinary pumps in chemical foaming working conditions.

3. Miniaturized Lightweight Structure & High Compatibility

The A7VK0028MA/10MRSL4P550-0 adopts an upgraded compact miniaturized design, which is smaller in size and lighter in weight than the traditional A2VK series metering pumps while retaining the same installation flange, shaft end specification and functional logic. It can be perfectly compatible with all mainstream polyurethane foaming machines and chemical quantitative supply equipment on the market, realizing plug-and-play replacement. The optimized internal flow channel structure reduces medium residue and flow resistance, ensuring smooth conveying of high-viscosity fluids without blockage. The compact layout is very suitable for integrated and compact foaming production equipment, helping equipment manufacturers optimize overall structural design and reduce equipment floor space.

4. Stable Continuous Operation & Low Maintenance Cost

Built with mature bent-axis cone piston transmission technology verified by long-term industrial application, the A7VK0028MA/10MRSL4P550-0 has extremely low mechanical failure rate and stable long-cycle operation performance. The reinforced bearing system and wear-resistant rotor assembly reduce friction loss during medium conveying, avoiding frequent wear and failure of core components. The manual mechanical adjustment structure has no vulnerable electronic parts, with strong anti-interference ability and wide environmental adaptability, suitable for continuous production operation of factory assembly lines. The detachable structural design facilitates daily cleaning and maintenance of internal residual chemical media, effectively extending the service life of the pump body and reducing later equipment operation and maintenance costs.

Model Code Detailed Explanation

Each segment of the A7VK0028MA/10MRSL4P550-0 model represents exclusive structural configuration, control mode and functional customization, helping global chemical industry buyers quickly confirm product parameters and matching scenarios:

Product Structure & Manufacturing Process

1. Precision Bent-axis Cone Piston Rotor System

The core power and metering component of the A7VK0028MA/10MRSL4P550-0 adopts an upgraded bent-axis cone piston structure different from general hydraulic pumps. The evenly distributed precision pistons and high-precision cylinder block form a stable variable-volume conveying cavity, which realizes uniform suction and discharge of viscous media through low-jitter reciprocating motion. The optimized inclined angle design disperses internal pressure, reduces medium shear force and flow pulsation, ensuring consistent and accurate fluid output per revolution. All matching surfaces are processed by micron-level precision grinding technology, with ultra-small assembly gaps, effectively avoiding medium leakage and flow deviation, and laying a solid foundation for high-precision metering.

2. Chemical-grade Anti-corrosion & Sealing Configuration

Aiming at the corrosive and adhesive characteristics of polyurethane media, the A7VK0028MA/10MRSL4P550-0 carries out full-process anti-corrosion upgrading. The core moving parts adopt high-purity alloy steel with special passivation and anti-adhesion treatment, which can effectively resist chemical medium erosion and prevent material adhesion and blockage. The double-layer composite sealing system is made of imported medium-resistant rubber and PTFE materials, which is resistant to high temperature, corrosion and aging. The independent flushing chamber design can monitor sealing operation status in real time, realize early warning of leakage failure, and avoid environmental pollution and production loss caused by medium leakage.

3. Manual Locking & Self-calibration Functional Structure

The exclusive MA manual adjustment mechanism of the A7VK0028MA/10MRSL4P550-0 is equipped with a high-precision scale and fixed clamping device. Operators can accurately adjust the displacement and flow according to production formula requirements and lock the parameters to ensure zero deviation in long-term operation. The built-in MRSL4P550 self-calibration module can automatically fine-tune flow errors caused by pressure and temperature changes, always maintaining stable metering accuracy. The mechanical adjustment mode is not affected by voltage fluctuation and signal interference, ensuring stable and reliable operation in complex industrial production environments.

Application Scope

With its high-precision metering performance, chemical anti-corrosion capability and stable continuous operation, the A7VK0028MA/10MRSL4P550-0 A7VK series metering pump is mainly applied in polyurethane foaming industry and chemical quantitative conveying fields. It is the core quantitative supply component for various foaming machinery, including rigid foam, soft foam, spray foam and high-pressure foaming equipment, accurately conveying polyurethane AB materials, foaming agents and auxiliary chemical materials. In addition, this professional metering pump is also suitable for quantitative fluid supply of grease filling equipment, fine chemical proportioning production lines and low-flow precision hydraulic systems, providing stable and accurate fluid power support for high-precision industrial production.

Hengmeisi, as a professional China manufacturer and supplier focusing on A7VK series chemical-grade metering pumps, strictly implements standardized production and full-quality inspection. Every A7VK0028MA/10MRSL4P550-0 pump undergoes precision flow calibration, pressure resistance test and medium adaptation test before delivery to ensure stable metering accuracy and durable performance. With high interchangeability, cost-effective factory price and perfect after-sales service, our products have become the preferred replacement and supporting components for global polyurethane machinery manufacturers and chemical industrial enterprises.