
The
UMETA TWIN-LOCK system safeguards the precision-made piston
in conjunction with two special seals against abrasion in continuous
operation. Due to the position of the seals it prevents dummy
lubrication and the escape of grease at the piston. The seals
vary according to pressure. Therefore the sealing effect adapts
to the corresponding working pressure. Due to the created vacuum
during the pumping process even viscous biodegradable greases
will be easily conveyed to the lubrication point. The UMETA invented
and patented Ever-Flow-System ensures that even thick grease
and the lowest temperatures cannot spoil the perfect performance
of the UMETA Twin-Lock Grease Gun - ideal for thick biodegradable
grease because the outlet valve is equipped with a special ball
stopping device. Another UMETA advantage for a problem which causes
many competitor's products to fail.