All three share the 1450W pump platform, 8 bar ceiling and 220V supply. The SP-50S pairs two heads with a 50L tank (276 L/min), the SP-90S runs three heads against 90L (≈384 L/min), and the SP-120S mounts four heads on a 120L receiver for roughly 512 L/min plus three-quarters flow redundancy. Choose by how many simultaneous air tools you run and how long the machine works per hour.

Yes. Total draw is about 5800W at 220V/50Hz — in the low-to-mid 20A range, which a properly sized 32A or 40A workshop circuit handles comfortably. No three-phase supply, converter or soft-start kit is required.

Isolate the affected head at its connector and keep working on the remaining three — you retain about 75% of rated displacement. The heads are modular, so a replacement bolts on without touching the other circuits.

No lubrication service is ever needed on the pump heads. The only routine tasks are draining tank condensate weekly, brushing dust off the fan grilles, and checking the braided hoses and fittings periodically.

Units go out in reinforced export cartons on pallets, tank empty and valve closed. Common service items — pump heads, pressure switch, check valve, solenoid unloader — are held in stock and can be shipped together with future orders.