Diesel Exhaust Fluid (DEF) dispensers are used at truck stops to offer bulk DEF alongside diesel pumps. These 'on-island' installations pump both diesel fuel and DEF, allowing the customer to purchase both products without having to move their vehicle. The flow meter used by these dispensers is Weights and Measures approved to measure the quantity of DEF accurately and reliably, and integrates with the Point of Sale.
Dispensers are designed to keep the DEF at optimal temperature using a heated cabinet and prevent urea crystallization. The internal components are usually made from stainless steel to protect against corrosion.
Pump dispensers for DEF are being installed on fuel islands across North America. You can use discoverDEF.com to search for truck stops that have installed DEF pumps.