Understanding this, consider a 65% residue emulsion with the 218ºC (425ºF) EVT asphalt from Figure 1 and a soap temperature of 60ºC (140ºF). This emulsion would have an emulsion exit temperature of 136ºC (277ºF), from Equation 3, which would require an emulsion manufacturing gauge pressure of 2.8 bars (40 psi) (Figure 2). Note that the actual outlet temperature could possibly be 10–15 degrees higher due to milling energy and pressure effects.