China Ductile Iron Flanged Valve Filter Basket Strainer - High Capacity Suppliers & Factory Solutions
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.
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.
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.
Frequently Asked Questions
What are the primary construction materials of this basket strainer?
The main housing is cast from high-grade Ductile Iron GGG40 (EN-GJS-400-15), and the internal filter basket is made of durable Stainless Steel SS304 or SS316.
How is the strainer protected against corrosion?
The entire unit is coated with a thick layer of Fusion Bonded Epoxy (FBE) to a minimum thickness of 250 microns, providing a non-toxic corrosion barrier suitable for potable and raw water.
What is the pressure rating for this valve filter basket strainer?
This basket strainer is engineered and rated for PN16 pressure environments.
How does the design facilitate safe and easy maintenance?
It features a top vent ball valve to bleed off internal pressure safely before opening, a top-entry design for lifting the basket straight out, and a bottom drain plug for removing fine sediment.
Which design and face-to-face standards does it comply with?
The strainer complies with design standards EN 1074-1 and ASME B16.34, with face-to-face dimensions conforming to EN 558-1 Series 1.