2 graco husky 2150 / at50/va50 air diaphragm pump aodd atex (ali/sant) dfc666 a vat invoice shall be provided with every order. Seal less design, no mechanical seals or pack glands. Typical Sound Level at 4.9 Bar (70 Psi). 3.9 Litres (1.03 US Gallons). Lubrication free, non-stall easy to access air valve design.