Ductile Iron Flanged Valve Basket Strainer Filter - China Suppliers & Factory for Industrial Water Systems
Ductile Iron Flanged Valve Filter Basket Strainer
Construction and Material Integrity
The main housing is cast from high grade Ductile Iron GGG40, also known as EN-GJS-400-15. This material is selected for its superior tensile strength and impact resistance compared to standard grey iron. Each unit is coated with a thick layer of Fusion Bonded Epoxy to a minimum of 250 microns. This non-toxic coating provides a dielectric barrier against corrosion and ensures the strainer is suitable for both potable water and raw water applications.
Filtration Dynamics and Maintenance
The heart of the unit is a heavy duty Stainless Steel SS304 basket. The basket is designed with a high open area ratio relative to the pipe diameter, which ensures that the fluid moves through the screen with minimal resistance.
- Pressure Management: As seen on the body casting, the unit is rated for PN16 pressure environments. To facilitate safe maintenance, a manual vent ball valve is installed on the top of the cover. This allows technicians to bleed off internal pressure before opening the bolted bonnet.
- Debris Removal: A drain port is located at the base of the chamber to allow for the removal of fine sediment and sludge without a full teardown. The top entry design means the basket can be lifted straight out of the body, cleaned, and replaced in minutes.
Technical Specifications
| Feature Description | Engineering Data |
|---|---|
| Design Standard | EN 1074-1 and ASME B16.34 |
| Body Material | Ductile Iron GGG40 |
| Nominal Diameter | DN200 |
| Pressure Rating | PN16 |
| Screen Material | Stainless Steel SS304 or SS316 |
| Face to Face Dimension | EN 558-1 Series 1 |
| Coating Type | Fusion Bonded Epoxy at 250 Microns |
| Accessory Components | Top Vent Valve and Bottom Drain Plug |
Strategic Industry Applications
These strainers are strategically deployed in pumping stations, heat exchanger inlets, and irrigation manifolds. Their robust design ensures that they can handle the high velocity transients and physical stresses of modern fluid networks while maintaining the hydraulic health of the entire system. Whether you are filtering welding slag from a new installation or managing organic debris in a cooling loop, this basket strainer provides a reliable and cost effective mechanical safeguard.