AQUA JET WD 3.5 WASHDOWN SYSTEM. The new generation of wash down pumps - 12V or 24V DC. Quiet and pulsation-free, the new Aqua Jet five-chamber diaphragm pump from SPX Johnson Pump provides the perfect deckwash solution for both small and medium sized leisure and commercial boats. With a pressure of 5 bar, clean-up is faster and easier than ever before. Features: Whisper quiet operation. Five-chamber construction. Self-priming. Easy, low cost maintenance. Quick-connect hose or threaded connectors available. Inline strainer and trigger nozzle included as standard. Long service life.