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Technical Datasheet -- Duplex Basket Strainers for Uninterrupted Pipeline Filtration
Duplex basket strainers for continuous operation applications where pipeline shutdown is not permitted. Two parallel basket chambers with an integral diverter valve allow switching from the dirty basket to the clean basket without interrupting flow. ASME B16.34 / API 594 compliant. Each chamber can be isolated independently for safe basket removal and cleaning.
| Parameter | Specification |
|---|---|
| Product Type | Duplex Strainers |
| Category | Strainers |
| Size Range | 2" to 16" (DN50 to DN400) |
| Pressure Class | Class 150 / Class 300 / Class 600 per ASME B16.5 |
| End Connections | RF flanged per ASME B16.5 |
| Body Material | ASTM A216 WCB / ASTM A351 CF8M (SS316) / ASTM B148 C95800 (NAB) |
| Basket Material | SS316 perforated sheet or SS316 woven mesh -- frame: SS316 |
| Diverter Valve | Integral 3-way diverter valve: ASTM A216 WCB body with SS316 ball / plug and PTFE/RPTFE seat |
| Cover Material | ASTM A216 WCB / SS316 with spiral wound SS316/graphite gasket (both chambers) |
| Drain Plug | SS316 drain plug on each chamber |
| Diverter Operation | Handwheel (standard) / Gear operator / Pneumatic / Electric actuator |
| Open Area Ratio | Minimum 3:1 open area to pipe area ratio per chamber |
| Perforation Sizes | 1/32" (0.8 mm), 1/16" (1.6 mm), 1/8" (3.2 mm), 3/16" (4.8 mm), 1/4" (6.4 mm) |
| Mesh Sizes | 20 mesh (841 microns), 40 mesh (420 microns), 60 mesh (250 microns), 80 mesh (177 microns), 100 mesh (149 microns) |
| Temperature Range | -29 deg C to +425 deg C (WCB) -- up to +540 deg C (SS316 body) |
| Component | Material |
|---|---|
| Carbon Steel | ASTM A216 WCB body and diverter valve (standard industrial) |
| Stainless Steel | ASTM A351 CF8M (SS316) body, basket, and diverter trim (corrosive service) |
| Nickel-Aluminium-Bronze | ASTM B148 C95800 (NAB) -- marine / seawater |
| Basket | SS316 perforated sheet or woven mesh with SS316 frame |
| Diverter Seat | PTFE / RPTFE / PEEK (soft seat) or SS316 + graphite (fire-safe) |
| Test | Requirement |
|---|---|
| Testing | Hydrostatic shell test 1.5 x WP per API 598 / EN 12266-1; Seat leakage test per API 598 / EN 12266-1; Functional test -- full stroke, torque; Material certificates per EN 10204 3.1 |
| Certification | ISO 9001:2015 QMS, EN 10204 3.1 material certificates, hydrostatic and seat test reports |
| Standard | Description |
|---|