Your Reliable Source for Pump Accessorie

About Us

Welcome to Shanghai Topkun Machinery Co., Ltd!

As an ISO9001-certified manufacturer based in Shanghai, China, we have been specializing in metering pump accessories since 2008. Our products serve a wide range of industries, including environmental protection, water treatment, electric power, pharmaceuticals, and chemicals.

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High-Quality Products for Precision and Efficiency

We offer an extensive range of accessories designed to enhance the performance of metering pumps and chemical dosing systems, including: 

✅ Back Pressure Valves
✅ Safety Relief Valves
✅ Pulse Dampers
✅ Flow Calibration Columns
…and more!

Innovation & Quality You Can Trust

Strong R&D Team – Continuously developing innovative solutions to meet evolving market demands.
Efficient Production & Management – Ensuring top-tier quality, competitive pricing, and fast delivery.
Professional Sales & Support – Providing excellent customer service and tailored solutions.

At Topkun Machinery, we are committed to being your trusted supplier for metering pump accessories. Whether you need standard products or customized solutions, we are here to help.


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Why chose us

Our company boasts a strong technical team, advanced equipment and processes, comprehensive testing methods, a sound organizational structure, modern management practices, and obtained ISO9001 quality management system certification in 2014. Since our founding, we have placed technology development at the forefront, and have obtained dozens of patents. Our technical principles focus on producing products with high technology content, high performance, and high quality. We continuously absorb and introduce advanced technology from domestic and foreign sources, strengthen internal management, and seek survival through quality and market through reputation. After years of innovation and development, our company has become a large-scale, branded, and specialized manufacturer of metering pump accessories. Our products sell well around the world and are highly trusted by our customers.


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