3S4-50
Hamworthy 3S4-50 — Breathing Air, Diving Air Supply.
Components & Design
Component data being added…
Technical Data
🤖 Ask about this model
One free question — answered like a marine engineer. No account needed.
Common failures & inspection points
Inspect piston rings for axial and butt clearances per specification; measure ring grooves for wear; verify oil scraper ring function. Critical for pressure maintenance and oil carryover control.
Test suction and delivery valves under pressure; verify check valve (NRV) function on discharge line; inspect valve seats and reeds for erosion, pitting, or leakage patterns indicating extended running hours under load.
Hydraulic test relief valves to verify opening pressure; set pressure function test at least annually; for interstage safety valves, verify set pressure does not exceed 1.2x maximum working pressure of the stage.
Visual inspection of cooler passages for scale, oil sludge, or corrosion; pressure drop test across cooler sections; verify fresh water cooling system flow and temperature control; check separator functionality.
Subject cylinder, piston, cylinder liner, cooler, separator, air pipe, housing, and end covers to hydrostatic test at 1.5x maximum working pressure; inspect for cracks, leaks, or deformation indicating material fatigue or corrosion.
Type-general inspection and maintenance points for this equipment category — not model-specific.
Suppliers & Spare Parts
Direct links to manufacturer, datasheet, spare-parts portal and dealers — request access below.
📄 Request sourcing links & documentsCases, daily reports, timesheets and AI troubleshooting in the OceanSphere Marine app — free for 14 days.
Start free trial →Find manufacturers, repair shops and spare-part dealers in the Maritime Network — our global company directory.
Maritime Network →