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)
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
