TiAL 004036 QR 50mm Recirculating Blow Off Valve - 1.5" Recirculation Port

The TiAL QR is the compact recirculating version of the legendary TiAL Q blow off valve (BOV), designed for use on turbocharged and supercharged applications including Paxton and Vortec systems. The QR mounts to any standard TiAL V-band flange without welding and delivers the same high-performance reliability the Q series is known for, in a more packaging-friendly recirculating format.

Key Features:

• Large 1.98 in (50.5mm) valve for exceptional flow capacity
• Body and all internal components CNC-machined from 6061 aluminum alloy
• Viton O-ring valve seal clamped in place to prevent sticking to the seat or pulling out
• Valve stem and guide are Teflon-lubricated and hard anodize-coated for long-term wear resistance
• Multiple recirculation port sizes available: 25.4mm (1.00"), 29mm (1.14" GTR), 34mm (Subaru/Evo/DSM), or 38.1mm (1.50") — MPN 004036 configured with 1.5" (38.1mm) recirculation port
• Uses the standard TiAL V-band flange; CNC-machined aluminum V-band mounting clamp with stainless steel hardware for a clean, corrosion-free appearance
• Convertible design — swap the bottom piece with a standard TiAL Q BOV bottom to convert to a full vent-to-atmosphere configuration
• Included machined aluminum banjo-type air fitting and bolt with 1/4" hose barb for quick actuator response
• High-temp silicone Nomex-reinforced diaphragm in the actuator for long service life
• Springs available to accommodate various vacuum levels and supercharged applications
• Available in Silver, Black, Red, Blue, and Purple anodized finishes

What's Included:

• QR BOV Assembly
• TiAL V-Band Clamp
• V-Band Weld Flange
• High Pressure O-Ring
• TiAL Air Fitting
• Return fitting (installed on unit)

The TiAL QR is outline-interchangeable with the Q and original BV50, making it a direct upgrade path for existing TiAL flange installations. Due to the custom-built nature of the QR series, a spring rate and color must be selected at the time of order.