With AAK variable pilot ratio hydraulic counterbalance valve, Milan's equipment

Milan from the Netherlands is an old customer of AAK. He purchased many non-standard customized hydraulic counterbalance valves from AAK. In March this year, Milan asked by email: can AAK design hydraulic counterbalance valves to reduce the energy consumption of equipment? It was learned that a hydraulic elevator developed by their company focused on the selling point of "low energy consumption and high efficiency", but after equipment commissioning, the energy consumption was not as good as expected and could not be promoted to the market. Their engineer knew that it was the problem of the hydraulic counterbalance valves, but there was no improvement after making efforts for several times. Milan contacted a number of hydraulic counterbalance valve manufacturers, but there was no gain. He was very anxious.

According to Milan's hydraulic schematic diagram and the original design drawing of the hydraulic counterbalance valve, AAK engineers analyzed that the problem really lies in the control of the hydraulic counterbalance valves. AAK can redesign the hydraulic counterbalance valve with 90% confidence. Milan seems to have no better choice. He paid $2,000 development fee. After 50 days, AAK sent 20 samples of hydraulic counterbalance valves.

Last week, Milan sent an order for 600 hydraulic counterbalance valves. At the same time, he informed that based on AAK newly designed variable pilot ratio hydraulic counterbalance valve, their engineer adjusted the working conditions of the equipment, improved the hydraulic principle, and saved more than 30% of the energy consumption of the hydraulic elevator. The promotion at the exhibition was also very smooth, the booking was hot, and their whole team was happy. But I'm a little unhappy. The price of Milan's regular order has dropped by 40% compared with the trial order. I told him that you can't let me "earn some money from selling cabbage with the heart of selling Heroin". Milan may also be amused, and directly revised it to the original price, only stressing the need to ship on time.

How do AAK engineers design variable pilot ratio hydraulic counterbalance valves? In fact, it is simply based on Milan's energy consumption pain point, fight to the end. The variable pilot ratio hydraulic counterbalance valve is an innovation from the mechanical structure of the valve, which utilizes the characteristics of variable pilot ratio and pilot pressure. When stable, a low pilot ratio is used, and when unstable, a high pilot ratio is executed. Compared with the conventional standard hydraulic counterbalance valves, the pilot pressure required for full opening can be 30% lower under the same pressure and flow. At the same time, AAK's variable pilot ratio hydraulic counterbalance valve can keep the oil cylinder and motor moving more smoothly and quickly. Compared with the original hydraulic counterbalance valve, the energy consumption can be reduced by 30%.