KRG diffusion filter is a new type of water pump inlet filter, which is a comprehensive filter integrating pipe decontamination, filtration, elbow and reducer. The diffusion filter itself can diffuse the flow direction and reduce the flow rate in the pipeline, and it can appropriately reduce the flow rate during the flow process, and it can also be used to make the fluid dispersed and evenly distribute the flow rate through the internal guiding plate, which guarantees the long-term and stable operation of the pump.
Main features
- The diffusion filter is installed directly at the inlet of the pump and plays the role of flow guide, which can provide a balanced water flow for the pump and protect the blades of the pump, and has the function of stabilizing the water flow, improving the efficiency of the pump, and prolonging the life of the pump.
- Diffusion filter adopts stainless steel filter with large filtration area, which reduces pressure loss and resistance, is applicable to various installation conditions, and can also be installed horizontally or vertically, which reduces the installation space and construction costs, and has the function of replacing 90-degree elbow, reducer tube, other filters and rectifier tubes.
Comparison of Installation Piping Schematics
- Shorten the inlet piping to reduce the weight of the pump.
- Reduce labor costs by using flanged connections.
- Shorten project time and reduce installation space.

Schematic Comparison of Media Flow Rate Distribution
- Sharp changes in the flow path piping at points A and B produce irregular flow rates that are sucked in by the pump, generating variable heavy loads, vibrations and cavitation with loud noises and affecting the life of the pump.
- Installation of diffusion filters reduces the flow rate in the pipeline without affecting the flow rate of the pipeline, and evenly distributes the flow rate through the internal deflector plate to ensure the long-term stable operation of the pump.

Application Areas
Widely used in: mechanical equipment, chemical equipment, general parts, industrial equipment, pharmaceutical equipment, general equipment, petrochemical equipment. Power equipment, metallurgical powder equipment, mining equipment, municipal equipment and electronic industrial equipment.
Product Parameters
Product Model | KRG-16C |
Valve Body Material | Carbon Steel |
Nominal Pressure | ≤1.6Mpa |
Applicable Media | Water and so on |
Applicable Temperature | ≤80°C |
Product Size Reference

Nominal Diameter | A | B | C | D | L (without flange) | sewer outfall |
DN100 | 100 | 275 | 220 | 219 | 450 | DN25 |
DN125 | 100 | 290 | 237 | 219 | 480 | DN25 |
DN150 | 110 | 325 | 240 | 273 | 540 | DN25 |
DN200 | 120 | 380 | 309 | 325 | 640 | DN32 |
DN250 | 130 | 455 | 333 | 377 | 780 | DN32 |
DN300 | 130 | 480 | 369 | 426 | 830 | DN40 |
DN350 | 150 | 550 | 415 | 478 | 950 | DN40 |
DN400 | 170 | 620 | 485 | 529 | 1070 | DN40 |















