Air-Operated Double Diaphragm Pump. Max fluid & Air PSI – bar 108-7. The item “Graco Husky 515. 1/2. Air-Operated Double Diaphragm Pump. USED. TESTED” is in sale since Monday, December 13, 2021. This item is in the category “Business, Office & Industrial\Hydraulics, Pneumatics, Pumps & Plumbing\Pumps & Pump Accessories\Other Pumps”. The seller is “1969tompli” and is located in Halifax. This item can be shipped to United Kingdom.