Large-scale hydraulic systems demand robust components and precise engineering. Recently, HydraSpecma’s team reached an important milestone with the configuration and construction of the largest PVG valve HydraSpecma has assembled to date. The valve is part of a larger hydraulic system delivered to their long-term customer MacGregor for a linkspan installation at the Port of Dublin.
Weighing about 200 kg and consisting of nine sections, the PVG valve shipped from Skjern, Denmark, to Kungsbacka, Sweden, in February 2026 is the largest PVG valve HydraSpecma have assembled to date.
The size and weight of the valve marked an important technical milestone. The scale of the assembly required several adjustments in production: the tie rods had to be custom-made to reach the full length of the valve, and the lifting equipment normally used in the workshop had to be adapted to handle the increased weight.
About MacGregorMacGregor is a global provider of cargo and load-handling solutions for the maritime and offshore industries. The company develops equipment, systems and lifecycle services that help shipowners and operators improve safety, efficiency and sustainability at sea. |
Skill sharing across locations
The nine-section Danfoss PVG 256/128 valve combination was configured at HydraSpecma’s site in Kungsbacka, Sweden, by experienced engineers and assembled at the workshop in Skjern, Denmark.
This collaboration highlights how expertise across locations is combined to deliver complex solutions to customers.
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“When we configure a PVG valve here in Kungsbacka, it is reassuring to know that we can rely on the workshop in Skjern. They have the skilled personnel and the best production facility to handle PVG assemblies of this scale,” says Henrik Forsman, Application Project Manager at HydraSpecma. |
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Part of a complete hydraulic system for Dublin Port
The PVG valve is a key component in a larger hydraulic system delivered to the long-term customer MacGregor for use at Dublin Port. In addition to the valve itself, the delivery includes a complete, fully integrated hydraulic setup designed to support reliable and efficient linkspan operation.
“By delivering the entire system, we ensure that all components are engineered to work seamlessly together – from the hydraulic power supply and control to safety and operator interface. This integrated approach reduces complexity for the customer and increases overall system reliability,” explains Henrik Forsman.
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Complete system overviewPower and hydraulic unit » 40 FT Machinery house container, located at ground level » Hydraulic Power Unit (HPU) with (4pcs) main pump/motor sets » Circulation and cooling circuit » 9-section PVG 256/128 valve combination Control and operation » Electrical control cabinets (2 pcs), with PLC and VFD starters » Additional control houses (2pcs) located on upper and ground level » Operator control pulpits with HMI interface in each control house Safety and support systems » Fire detection system » Ventilation system |
Close cooperation with customers
With a project of this scale, close communication and coordination are essential. HydraSpecma works closely with its customers throughout the entire process – from initial concept and engineering to production and final delivery.
“By combining our engineering expertise and in-house production capabilities, we are able to configure and construct complex hydraulic solutions under one roof. This ensures consistency, efficiency, and a high level of quality across every stage of the project. The close collaboration also means that we take full ownership and pride in the solutions we deliver,” says Ola Österberg, Manager Technical Sales Support at HydraSpecma.
The project is currently ongoing and is expected to be completed and delivered in summer 2026.