Garrett 914956-0002 Blow-Off Valve GVB-50A 50 mm, Blue

Garrett GVB-50A vent-to-atmosphere blow-off valve — relieves compressor surge on lift-off for smoother, more reliable boost control.

The GARRETT 914956-0002 VTA GVB-50A in blue is a high-flow 50 mm blow-off valve engineered by the same team behind G-Series turbochargers and GVW wastegates.

Optimized through advanced CFD design, it delivers airflow up to 350 CFM / 0.21 kg/s (GVB-50R RCV), ensuring precise boost control and maximum efficiency.

The Nomex-reinforced high-temperature diaphragm guarantees durability under extreme conditions, while the plated stem and bushing reduce friction and wear.

The valve is pre-set to 10 PSI base pressure and includes multiple spring options for fine-tuning between 3 and 13 PSI.

Specifications

• Type: vent to atmosphere
• Valve size: 50 mm
• Base pressure: 0.7 Bar (10 PSI)
• Spring range: 3–13 PSI
• Max flow: 350 CFM
• Colour: Blue

Features

• CFD-tested for maximum flow and thermal performance
• Replaceable components to extend operational life
• Robust construction for simple diaphragm replacement
• 6061 anodized aluminum actuator cover with billet-machined housing
• Maximum flow capacity: 350 CFM / 0.21 kg/s (GVB-50R)
• Four recirculating outlet adapters available (sold separately)
• Base pressure: 0.7 Bar / 10 PSI (blue and white spring installed)
• Adjustable spring settings: 3 / 4 / 6 / 7 / 9 / 10 / 12 / 13 PSI