Dometic VG4 / JW12 Vacuum Generator 317780012

Original price was: $1,695.99.Current price is: $1,550.00.

Dometic VG4 / JW12 Vacuum Generator

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Dometic VG4 / JW12 Vacuum Generator is the most efficient water and power consumption among  Marine heads. The J-series vacuum generators are easy to install.  The intake and discharge capabilities and compact size allow a variety of installations to fit in almost any vessel. The Dometic VG4 /JW12 Vacuum Generator is offered in both 12 Volt and 24 Volt.

The larger 2″ Duckbill Valves allow the VG4 to regenerate vacuum up to 33% faster than the VGII or VG III. The larger duckbills are also less prone to clogging than the 1.5″ duckbills used in these predecessors. If you are replacing an existing VG4 mounted directly on your holding tank (HTSVG), you may be required to change the direction of the discharge fitings. If you have additional questions, you can Chatt, Email, or Text us.


  • 12 Volt (8amp) DC or 24 Volt (4amp) DC models
  • Ultra-quiet: remotely installed outside of head compartment
  • Adjustable components accommodate diverse layouts
  • Pre-assembled and wired vacuum pump and vacuum tank
  • Large valves for enhanced flow
  • self-priming up to 50′ horizontal and a 6′ lift

VG4 Instructions

Part Numbers: 780012 – 317780012 (12V) 317780024 (24v)

Additional information

Weight 20 lbs
Dimensions 23 × 16 × 12 in

12 Volt, 24 Volt