Evac elongated vacuum toilet

• Hygienic
• Low water consumption
• Pneumatic flush mechanism means no electrical connections necessary
• Constructed from corrosion-resistant materials
• Universal height, compliant with ADA standards for accessible design as required in public spaces

• Water consumption: ~0.45 gal/flush [1.7 L/flush]  
• Air consumption: 2.1 cu ft/flush [~60 L/flush]
• Water pressure:  15…145psi [1….10 bar]
• Operating vacuum: -9…-18inHg [-0.3… -0.6 bar]
• Dimensions: 24 x 15.36 x 19.88 in [610 x 390 x 505 mm]
• Weight: Dry –  50 Lbs. (23 kg); Wet – 54 Lbs. (24.5 kg)

The toilet bowl is white vitreous china and is attached to a wall with bolts that are inserted through a support beam or a structural carrier. The cavity behind the bowl houses the backplate assembly with the basic working components, the control valve, vacuum breaker and water valve. The discharge valve is attached to the wall with a brace plate. The entire flushing cycle is sequenced by the control valve.

In operation, the vacuum sewer piping is under vacuum at a pressure of approximately half an atmosphere. When the flush button is pressed, the control valve opens the discharge valve and water valve for a few seconds. Air at atmospheric pressure forces the contents of the bowl through the discharge valve and into the piping. In the piping, waste forms a slug that is propelled to the collection tank by expanding air. The discharge valve closes first and the water valve closes after it supplies washdown and pool water. The controls are automatically reset at the end of each flushing cycle.  The control unit with flushing memory ensures that there is sufficient vacuum for flushing before allowing the flush to be performed. Both the water consumption and flushing time can be adjusted.