Pressure Tanks - All pressure tanks have a maximum working pressure of 125 PSIG which is set by Federal safety standards. Do not remove or alter the safety relief valve which is a required part of the tank assembly.
A typical operating pressure is 20 PSIG for a low viscosity adhesive in a warm mill. Higher viscosity glues and lower operating temperatures will require higher tank pressures. Under no circumstances should 125 PSIG be exceeded. If an application requires a greater pressure that 125 PSIG, then the positive displacement 585/586 pump will be required.