The RIS-VENT2QR-OV is a specialised quick release pressure vacuum vent valve featuring an integrated orifice vent for enhanced pressure equalisation.
Equipped with a 10mm orifice in the PV poppet, this model allows a limited airflow before reaching the set pressure and vacuum relief thresholds.
This design is ideal for managing low-level vapour displacement and minimising pressure build-up during tank operation, particularly in overfill scenarios.
It retains all the durable construction and high performance of the standard RIS-VENT2QR while providing additional system flexibility and safety.
- Materials: Anodised Aluminium, Viton A (FKM), Delrin (polyacetal), Stainless Steel
- Fuel Compatibility: Petroleum Spirit (Ethanol blends up to 90%), Diesel, Diesel/FAME blends, AvGas, Jetfuel
- Relief Settings: +35mbar (8 oz/in²), -2mbar (0.5 oz/in²)
- Orifice Vent: 10mm orifice allows controlled airflow prior to relief threshold activation
- Pressure Flow Rate: 0–5000 l/min
- Vacuum Flow Rate: 0–1500 l/min
- Certifications: ATEX SIRA 06ATEX9193X, EN16852:2010 / EN13463-1:2009