Odourisers EnPro OBP – Bypass Odouriser Home/Products/Odourisers/EnPro OBP – Bypass Odouriser Odourisers EnPro OBP – Bypass Odouriser A sealed bypass odouriser available as either a fixed-rate unit or a fully monitored solution. Why it matters Provides safe, consistent odourant injection while minimising environmental risk and operator intervention. Lit OBP Enquire about this product How it works Pipeline pressure differential meters odourant through the vessel before discharge. 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