Most manufactures hydraulic lift cylinders design dead end at maximum extension which can cause internal damage to the cylinder. Pentalift developed the PentaFlow hydraulic lift cylinder that removes dead ending. An internal mechanical valve opens at full extension and oil is routed back to the reservoir without pressure build up. Another advantage of the PentaFlow cylinder is the ability to purge/bleed air from the hydraulic system automatically. When the lift cylinder reaches full extension keep the up button depressed this purges the hydraulic system, any trapped air is routed to the reservoir out of the hydraulic lines.
Contact a Pentalift Sales Representative for more information.