0102030405
China Ductile Iron Flanged Valve Basket Strainer - High Capacity Filter from Leading Suppliers and Factory
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.
Frequently Asked Questions
What are the benefits of using Ductile Iron GGG40 for the strainer body?
Ductile Iron GGG40 (EN-GJS-400-15) offers significantly higher tensile strength and impact resistance compared to standard grey cast iron. This ensures the strainer can withstand high pressure transients and physical stress in demanding fluid networks.
What is the standard thickness and purpose of the epoxy coating?
The strainer features a Fusion Bonded Epoxy coating with a minimum thickness of 250 microns. This non-toxic coating provides an excellent dielectric barrier against corrosion, making the unit suitable for both raw and potable water applications.
How does the top-entry design facilitate maintenance?
The top-entry design allows maintenance technicians to lift the stainless steel basket straight out of the body chamber. This allows for quick cleaning, debris removal, and replacement without a full system teardown.
Why is a manual vent valve installed on the cover?
The manual vent ball valve on the top cover allows operators to safely bleed off internal system pressure before opening the bolted bonnet, ensuring standard safety protocols are met during maintenance.
What is the function of the bottom drain port?
The drain port at the base of the chamber allows for the easy purging of fine sediment, sludge, and accumulated debris without having to remove the main basket cover.
Which industries and systems utilize these basket strainers?
They are commonly deployed in pumping stations, heat exchanger inlets, irrigation manifolds, and cooling loops to filter out welding slag, organic matter, and other physical debris.