Odourisers EnPro BFAO – Bypass Flow Absorbent Odouriser Home/Products/Odourisers/EnPro BFAO – Bypass Flow Absorbent Odouriser Odourisers EnPro BFAO – Bypass Flow Absorbent Odouriser A simple, cost-effective odourant system for smaller installations without instrument-based injection. Why it matters Ensures smaller networks remain compliant and safe, using a straightforward design with minimal upkeep. Lit BFAO Enquire about this product How it works Gas is diverted through a regulator and odourant canister before returning downstream. Need help specifying the right odourisers? Talk to a Haldatec engineer about your application, site conditions and the standards you operate to. Talk to our team