The One-Way Valve Feature inherently conforms to the EPA's 2011 mandate requiring that package designs don't allow back filling of totes or drums. This unique design improves fluid-handling capabilities with low material sheering, solids handling up to 1/10" and dry-run capabilities.
The Power Distribution is a unique reciprocating, spring driven, double diaphragm configuration retains constant pressure, regardless of the load. Motor amperage is actually reduced as back pressure increases. No Internal Bypass required - the pump automatically goes neutral when the end of hose valve is shut off.