The TiAL Sport Q is a 50mm vent-to-atmosphere blow-off valve machined entirely from billet aluminum, the revision of TiAL’s original BV50 that flows roughly 60% more (rated 220 lb/min). It ships with a purple anodized cap and the 12 PSI spring installed, and uses a Nomex-reinforced silicone diaphragm with an M10 vacuum signal port. Springs are interchangeable to match boost pressure, and it bolts to any standard TiAL BV50 flange without welding.
| Type | 50mm atmospheric (vent-to-atmosphere) blow-off valve (Q Series) |
| Valve Diameter | 50mm |
| Mass Flow | 220 lb/min |
| Pressure Range | 2/12 PSI |
| Fitted Spring | 12 PSI |
| Body | Billet aluminum |
| Color | Purple |
| Diaphragm | Nomex-reinforced silicone |
| Included | BOV assembly, air fitting set, weld flange, clamp assembly, weld flange O-ring |
| Part Number | 004029 |
Documents: Bench Testing Instructions (PDF) | Routing & Plumbing Options (PDF)
