Hydranor hydraulic valve blocks

Hydranor - a Servi brand - provides robust hydraulic valve blocks for demanding marine, offshore and hydropower applications. Designed, manufactured and tested in Norway, our solutions build on more than six decades of documented experience.

icon hydraulic valve

Explore Hydranor winch blocks

Find solutions for stand-alone installation or direct mounting on the winch motor, with options such as counterbalance valve, crossflow relief, two speed, mooring tension and brake release.

Established in 1962

Designed and manufactured in Norway - 100% function and pressure tested

Hydranor became part of Servi in 2012. 

Today, Hydranor products are developed, manufactured and tested at Servi’s facility in Kongsberg, Norway.

Why choose Servi Hydranor

  • Proven technology since 1962
  • Designed for harsh marine and offshore environments
  • Stainless steel protection in exposed areas
  • Compact design with fewer potential leakage points
  • 100% function and pressure tested
  • Documentation, spare parts and lifecycle support
  • Selected valve blocks can be supplied with surface treatment adapted to demanding marine and offshore environments
Image of a block in a work environment, with a person interacting with the block.
 Image of an employee conducting function and pressure tests on a block

Quality throught the product lifecycle

 

Every Hydranor valve block is function and pressure tested before delivery in accordance with customer requirements.

Clear product documentation helps simplify installation, operation and maintenance, while original Hydranor spare parts support reliable service over time. 

Servi can also overhaul older Hydranor valve blocks, replace worn components and retest the blocks before they return to operation.

Together, these services help extend product life, avoid premature replacement and reduce unplanned downtime.

 

Need a spare part?

Typical applications for Hydranor valve blocks

Cranes
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Offshore drilling operations
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Seismic vessels
Merchant vessels
Fishing vessels
Winch and mooring systems

Read our customer stories

Bilde av blokk før og etter overhaling

Lifecycle Extension of Hydraulic Blocks

After many years in use, this block came in for service and overhaul in Kongsberg. It was disassembled and sandblasted, then received new seals and valves where needed. After surface treatment and testing, it was sent back to the customer for many more years of use. Sustainable in multiple ways.

Read more about overhaul

 

Ever since our establishment as Hydranor in 1962, we have delivered robust and reliable blocks to a wide range of sectors. The technology used in our blocks has been thoroughly tested over many years by the most demanding offshore and marine customers. In our design, we have strengthened the most exposed parts in the block with stainless steel components. This further increases the lifespan of our blocks. 

Contact us

Tell us about your application, operating conditions and required flow. Send us an e-mail, or contact our valve block specialists: We will help you identify the right solution.

Dennis Møller
International Sales Manager
+47 994 08 518
Christoffer Stensrud
International Sales Manager - Valve Blocks & Manifolds Kongsberg
+47 481 229 98