DISTRIBUTOR-FIRST SUPPLY PARTNER · SINCE 1999 Live · Marine & Shipbuilding System
Corrosion-hardened pneumatics and control air for vessels and yards in a saltwater environment.
On a vessel and in the yard, compressed air runs the deck and control systems — pneumatic tools, valve actuation, instrument air for engine and cargo controls, sandblasting and painting in the shipyard, and ship-service air at the dock. The defining constraint isn't flow or pressure; it's the saltwater environment, which eats standard carbon-steel and brass hardware and pushes every drop of moisture toward corrosion and freeze-up.
SPC's distributor-first model fits because no single brand covers a corrosion- hardened air train. We source stainless and corrosion-resistant fittings, valves, and tubing for the wet zones, ruggedized compression and deep drying for the engine room, and ATEX-rated components for fuel and cargo spaces — pairing the strongest brand at each stage, with a local distributor who can turn a part around before the vessel sails.
Standard brass fittings and carbon-steel tube fail fast in salt-fog and 90%+ humidity. Wet-zone deck and shipyard air runs on 316 stainless fittings, valves, and tube — the material premium is cheaper than a mid-deployment failure.
Marine ambient air is saturated. Without drying, condensate forms in every line, rusts tools and actuators from the inside, and freezes control air on exposed deck runs. Instrument and control air targets a −40°F PDP from a regenerative desiccant dryer.
Engine, cargo, and ballast controls run on clean, dry instrument air. A particle or slug of water that sticks a control valve is a safety event at sea, not a nuisance. The train is filter, dryer, and a buffer receiver sized to ride through compressor cycling.
Abrasive blasting and spray painting in the yard pull high, sustained flow and demand oil-free, dry air at the nozzle to avoid coating defects. Size the dryer and oil-removal train to peak blast demand, not shop average.
Air components in fuel-handling, tanker cargo, and bunkering spaces sit in ATEX / IECEx classified zones. Solenoid valves, drains, and enclosures in those areas must carry the explosion-protection rating for the zone they're installed in.
Pneumatic and control-air systems on classed vessels are surveyed against ABS, DNV, or Lloyd's Register rules. Components on the class-approved list clear survey; off-list parts can stall a build or a dry-dock release.
A brass fitting spliced into a stainless line creates a galvanic couple that corrodes fast in salt water. Keep wet-zone hardware single- metal stainless end to end — the cheap fitting becomes the failure point.
A mechanical float drain on an exposed run rusts and jams, then either dumps air continuously or stops draining and lets water collect. Spec a zero-air-loss electronic drain in a protected enclosure for marine duty.
Hover any standard for what it controls. These are the certs that decide which dryer, filter, and lubricant make the cut.
Two systems, kept separate. Compressed air on the left, pneumatic automation on the right. Each card carries how the product fits in Marine & Shipbuilding.
Above-deck air supply, lifeboat/winch pneumatic air, salt-environment installs where electrical service is limited or rated for hazardous area only. Deliquescent has no electrics so no hazardous-area rating issue; brine drain handled through the platform's existing waste-water management.
Mobile compressor packages, drilling-rig service air, marine engine-room air supply. Standalone aftercoolers built for the duty — water-cooled where seawater or process cooling is available, corrosion-resistant materials for the environment.
Small dive-shop and specialty breathing-air fill operations using membrane drying as the dewpoint stage before fill compressors. Membrane's quiet, passive operation suits the small-volume fill-station environment.
Dockside work where running fixed compressed-air piping isn't practical (vessel maintenance, dock work, mobile workshop service). Portable tank with the operator's compressor of choice provides flexible storage on a transient or rotating-location basis.
Every vessel with an ASME stamp requires a relief, not just the storage receiver. Aftercoolers with shell-side air at full discharge pressure need relief sized to compressor SCFM. Inter-coolers between stages need relief sized to inter-stage flow.
FDA-contact stainless steel (304/316) vessels with sanitary finish (3A or EHEDG), certified material traceability, and sanitary port configurations (tri-clamp, weld-neck flanges with sanitary gaskets). Used for process gas, cleanroom support air, and process media handling. Sanitary specialty is its own fabricator subset.
Marine-grade (Monel or super-duplex) for offshore platform. Per-platform 500-2000+ fittings.
Shipboard pneumatics, offshore oil/gas instrumentation, coastal manufacturing in salt spray, marine winch and crane controls.
Send the conditions and the constraint. We size the system, name the tiers, and tell you what attaches on the quote.
—. We reply within one business day with pricing, lead-time, and configured parts.