Reversible feeder system.

摘要

A cyclical lubricant feeder utilizing series spool valves to dispense measured quantities of lubricant to dispensing outlets (120,121) from a common feed source (11) with a plurality of the spool valves arranged in series in valve block assemblies (15) which in turn are in series with one another whereby dispensing through the outlet (120,121) for each spool valve in a block assembly (15) is in progression with the other outlets from the spool valves (120, 121) in the valve block assembly (15) is provided with a control valve (124) controlling inlet and outlet flow to the valve block assembly bypassing flow from the inlet (140) to the outlet (141) when all of the valves in the block have been shifted to one side and bypassing flow from the outlet (141) to the inlet (140) upon reverse lubricant flow to the block only when all of the valves in the block have been shifted to the other side.