Machines and Industrial Equipment Corporation (MIE)

Eaton Products Are at Work on Newly Inaugurated Hydropower Plant in Vietnam

Delivered in just seven months to meet construction deadlines, Eaton large-bore cylinders, as well as piston pumps and valves, are performing leadingrole functions on the A Vuong Hydropower Plant’s spillway gates.


With the help of Eaton products, a new hydropower plant is contributing to economic restructuring and poverty reduction in Vietnam.

Prime contractor Machines and Industrial Equipment Corporation (MIE) of Hanoi, Vietnam, selected Eaton hydraulic products for the A Vuong Hydropower Plant, located in the province of Quang Nam in Central Vietnam.

Officially inaugurated on July 13, 2010, by Vietnamese Prime Minister Nguyen Tan Dung, the Electricity of Vietnam plant is providing electric power to 1 million people with its capacity of 210 MW that generates an output of 815 million kWh per year.

Eaton products were supplied for the $210 million(USD) hydropower plant by Industrial Technology Company (Inteco), a mechanical integrator based in Hanoi. The project generated $900,000 (USD) in revenue for Eaton in 2008.

Eaton cylinders, piston pumps, and valves are performing leading-role functions. Six Eaton Hydrowa® XL Series doubleacting cylinders, weighing 28,000 pounds each with a bore size of 450 mm (17.7
inches), are providing a force of 182 tons to open and close the plant’s three spillway gates. Three sets of Eaton PVQ piston pumps and DG valves are performing hydraulic power unit functions on the gates.


MIE has worked with Inteco on several highly successful Eaton-product applications, including Vietnam’s Thao Long River that employs Eaton Hydrowa cylinders to operate radial gates. Still, according to protocol, MIE sought hydraulic component bids for the A Vuong Hydropower Plant from several worthy competitors as well.

Even with experience under their belt, Inteco and Eaton had their work cut out for them—MIE needed six cylinders to be delivered in just seven months to meet construction deadlines.


Eaton’s George Hendro, general sales manager—Eaton Industries Pte. Ltd., met with MIE personnel several times to present Eaton’s cylinder production capabilities. Hendro reinforced the Eaton Eindhoven, Netherlands facility’s engineering strengthsby providing detailed engineering drawings of customized Hydrowa cylinders that would meet the dam project’s requirements—10,300 mm (405.5-inch) stroke, 250-mm (9.8-inch) diameter rod, and 200 bar (2,900-psi) operating pressure using mineral oil.

He emphasized that Eaton Hydrowa cylinders are more corrosion-resistant than competitive designs due to their ceramic coating. He also stressed the Eindhoven plant’s strengths in custom cylinder delivery by citing numerous examples of on-time deliveries for civil engineering projects around the world and by formulating a production timeline.

Meanwhile, Inteco and Eaton personnel worked side by side to put together a value-added proposal that covered every aspect of cylinder, pump, and valve supply, plus onsite cylinder installation assistance and hydraulic system startup.


Eaton and Inteco beat out three competitive hydraulic component suppliers to earn MIE’s business. Among key reasons were the commitment of the Eaton Eindhoven plant to meet stringent delivery requirements and Eaton and Inteco’s close working relationship.

“Our partnership with Inteco enabled us to propose functional, process, and onsite assistance benefits that offered significant value over the competition,” Hendro says.

“This important business win will help strengthen our expertise even more in the Vietnam hydropower and dam market.”

Eaton products were delivered on-time to the jobsite and have been fully operation since 2009.