Parker filtration systems chosen by the Italian and American navies


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Filtration system suitable for gas turbines

The Italian and American navies have respectively ordered Constellation-class guided missile frigates FREMM (European Multi-Mission Frigates) and FFG62, built by a major Italian shipbuilder in its Italian and American yards. The aerodynamic gas turbines powering these vessels and configured for marine applications will be protected by Parker Altair Neptune filtration systems.

Parker altair Neptune filtration systems are designed to ensure a clean and reliable supply of air to the inlet of the gas turbine. The downstream salt concentration is 0.0025 ppm relative to the NGTE aerosol at 30 knots. Equivalent to 99.93% salt removal efficiency, vital for offshore operations. They are also compact and lightweight, making them suitable for use on such vessels, the company said. The system comprises a three-stage solution, comprising marine vane separators and a coalescer / filters, which provides the high efficiency and performance required for use in military ships.

Parker altair Neptune filtration system selected for Italian and US Navy ships.

Under a long-term contract, Parker has supported the multi-FREMM development program and has already delivered 10 sets of FREMM vessels for the Italian Navy. This commitment was extended with an order for two more, for delivery in 2022. The recent order for the FFG62 frigates for the US Navy was received last year and will eventually expand to 10 sets of ships over the six next few years, with the first delivery scheduled for next year.

The FFG62 is part of the US Navy Small Surface Combatant (SCC) program and has a wider and more elongated hull compared to the mother design of the FREMM. The acquisition of these ships supports the Navy’s force level objective of a force of 52 CSC as part of the current total ship plan of 355.

Frigates are designed for speed and maneuverability. This makes the delivery of GT specification air to propulsion (gas turbine) systems mission critical. A well-designed air intake system not only provides clean air, but also facilitates maintenance activities such as cleaning filters or replacement and drainage inspections. Anti-ice systems and automatic bypass doors are also part of the perimeter.

The Neptune filtration system is suitable for gas turbines and, on FFG62 ships, also diesel generators. By using these advanced filters, both Marines will be assured of reliable operation and, by protecting the efficiency of the turbines /

“We are delighted to provide additional ship packages for Italian ships and with the new contract for the US Navy,” said Gerald Woodward, Parker division director of sales and marketing. “These systems are proven and their light and compact form makes them ideal for a wide range of vessels. Their advanced design ensures reliable and rugged operation and fewer filter changes, making them ideal for use in a marine environment.

The internals of the turbine are easily damaged by the corrosive nature of the salt. The first stage of the Neptune system removes bulk water from rain, spray and aerosol. In the second step, a coalescer removes dust and solid contaminants as well as fine aerosols by merging them into larger droplets. The third stage uses a paddle separator to remove the concentrated salt solutions that have gone through the first stages.

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