Similar in operation to the DSP501A, but with an analog gage to indicate the level
of suck-back measured in psi.
The unit’s larger internal air solenoid is recommended for operations that require
an immediate high volume air exhaust, such as collapsible toothpaste-type tube, caulking, cartridge reservoirs and rotary table operations. The higher volume exhaust prevents post-extrusion of materials contained in tubes.
