Three-Way Ball Valve -- L-Port Diverting SS316
Compact L-Port Diverting Valve for Flow Switching and Bypass Service
Document No.SV-DS-BAL-009
RevisionRev A
DateMay 2026
ManufacturerSupreme Valves India, Ahmedabad, Gujarat, India
This datasheet covers three-way L-port ball valves in SS316 for flow diverting, pump duty/standby selection, and filter changeover bypass applications.
Technical Specifications
| Parameter | Specification |
|---|
| Valve Size Range | DN15 to DN150 (1/2" to 6") |
| Pressure Rating | PN40 / Class 300 |
| Body Material | CF8M (SS316) 3-way cast stainless steel body |
| Ball Material | SS316 L-port ball, precision machined and lapped |
| Seat Material | Virgin PTFE or RPTFE (15% glass filled) seats |
| Stem Material | SS316 anti-blow-out stem with double O-ring seals |
| Packing | PTFE V-ring packing with live-loading gland |
| Lever | SS304 locking lever with padlock holes |
| Temperature Range | -20°C to +180°C (PTFE seats); +250°C with PEEK |
| End Connections | Flanged ASME B16.5 / BS EN 1092-1, threaded NPT, socket weld |
| Flow Pattern | L-port diverting: inlet to either outlet, or common to one of two |
| Features | L-port diverting, replaces two valves and tee, bubble-tight, locking lever, actuation ready |
Materials of Construction
| Component | Material |
|---|
| Body | CF8M (SS316) 3-way cast stainless steel, investment or sand cast, solution annealed |
| Ball | SS316 solid L-port ball, precision machined with 90-degree flow channels, lapped to seat tolerance |
| Seats | Virgin PTFE or RPTFE (15% glass filled) floating seats with anti-extrusion lip |
| Stem | SS316 anti-blow-out stem with double O-ring seals and PTFE V-ring packing set |
| Packing | PTFE V-ring packing with Belleville spring live-loading for constant compression |
| Lever | SS304 locking lever with padlock holes and position indicator for safe isolation |
| Gaskets | PTFE envelope or spiral-wound SS316 + graphite flange gaskets per service |
Testing & Inspection
| Test | Requirement |
|---|
| Test Standard | API 598 / ISO 5208 |
| Certification | CE, PED, ISO 9001, ATEX on request |
Applicable Standards
| Standard | Description |
|---|
| Design Standard | API 608 / ISO 17292 / ASME B16.34 |
Notes
- L-port configuration provides 90-degree flow diversion only; for mixing or splitting with all ports open, specify T-port configuration instead.
- Three-way valves are not suitable for pigging; if pigging is required, install full-bore bypass loop with isolation valves.
- Seat orientation must match flow direction to prevent seat blowout; specify actual inlet, outlet A, and outlet B at order.
- For high-cycle automated service, specify RPTFE or PEEK seats with metal seat backup for extended wear life.
- Locking lever padlock holes accept standard 6 mm shackle padlocks; verify padlock compatibility with site lockout/tagout procedure.
