Duplex Basket Strainer
A duplex strainer (double basket) is used when the flow or process cannot be shut down and must continue to flow
| Construction | Cast, Forged and Fabricated |
| Types | 2 way / 3 way ball valve |
| Sizes | 1/2″ on wards |
| Method Cast Forged Fabricated | Material of Construction Cast Iron, WCB (CS), SS (CF8, CF8M) etc. A105 (CS), SS . Carbon Steel, Stainless Steel- Austenitic & Duplex, Nickel Alloys |
| End connection | Flanged, Butt weld, Threaded, Bevel end, Socket weld |
| Mesh (of any material) | Perforated Sheet / Wire Mesh and combination of these SS,Duplex, Inconel or other special alloy steels as per customer requirements. |
| Accessories | P-tapping / Gauge Drain / Vent valves Coating / linings Root valves Hinged cover or davit arm assembly for easier maintenance Steam jacket for highly viscous fluids Rotated or offset nozzle placement Back-flushing system for manual / Automatic Coatings and linings available upon request Specialized units within site space constraints. |
Key features of LSI-MECH Duplex strainer
- No shutdown time required for cleaning
- Dimensional flexibility (overall length)
- Both inline & offline construction available
- Customized design
- Fabricated as per customer requirement with In-house packing/painting facilities.
- Can provide linings, cladding if required.
Design Specifications
- Pressure drop at clean condition, at clogged condition and open area ratio/gross filtration area can be customized requirements.
- Strainers meet ASME B16.5 & ASME B16.34 requirements
- Welders are qualified as per ASME Sec IX (if required)
- Design & Dimensional flexibility as required by customer
- Valves -Ball, Gate, Butterfly or other isolation valve types may be used for diversion and isolation of flow
- Special covers, skid structures, supports as per customer requirements.

Inspection & Testing Capabilities
- Dye penetrant test
- Hydrostatic/Hydraulic test
- Vaccum test
- Radiography
- Ultrasound
- Type test/ pressure drop test (additional cost for additional strainer)
- Burst pressure test for strainer element (additional cost test)
- PMI for SS parts
- Charpy test for raw material
- Any other test as per customer requirements.




