New HP pump solution for dual-fuel two-stroke engines

The new high-pressure fuel pump unit, HPP Triplex Unit, features a drive system and three combined cold ends, which is designed for optimal flow and longer service intervals. The cold end includes an innovative low-pressure sealing arrangement that reduces friction, ensuring longer service intervals. To further reduce maintenance costs, Svanehøj has developed a cartridge solution for swift sealing replacement. To ensure high efficiency and low-pressure drop, Svanehøj has also incorporated a new inlet valve design.

The development of the high-pressure pump represented a strategic decision for the low-pressure fuel and cargo pump specialist. 

“It is evident that more integrators of fuel gas supply systems are taking on a progressively substantial role in designing fuel supply systems, especially for LNG-powered vessels. Therefore, they increasingly require critical components specially designed to operate under extremely low temperatures and high pressures. Based on decades of experience in low-pressure fuel and cargo pumps for LNG, we made a strategic decision to extend our scope and include a larger part of the LNG fuel supply system by developing a high-pressure pump unit, exclusively designed for maritime purposes,” explained Johnny Houmann, CSO at Svanehøj.

Investing in products and services for the LNG segment

In recent years, Svanehøj has invested significantly in new products and services for the LNG segment, including a new submerged fuel pump, launched in 2022, and the acquisition of the US-based specialist in service and overhaul of LNG pumps, Complete Cryogenic Services (CCS), in 2023.

HPP Triplex Unit – technical info

A triplex type high pressure piston pump for LNG, with belt drive system, installed on a skid for easy transportation and installation.

• 3 pcs. of cold ends
• ATEX motor downrated for VFD operation
• Media: LNG
• Capacity: 11,5 – 72.0 l/min (0.7-4.3 m3/h)
• Inlet pressure: 7-14 bar
• Operational design pressure: 350 bar
• Maximum working pressure: 380 bar
• Minimum operation temperature: -163°C
• Unit dimensions: 3000x1390x1100 mm