New/never used Old Stock. Wilden Air Operated Double Diaphragm 1.5 (vintage) pump W4/WAAB/TF/TF/MTF. See codes in photo.. Wetted Parts = Cast iron. Air Chambers = Aluminium. Center Section/Block = Aluminium. Air Valve = Brass. Diaphragms = Teflon (PTFE). Ball Valves and O-Rings = Teflon (PTFE). Valve Seats = Mild Steel. Valve Seat O-ring = Teflon (PTFE). This item is in the category “Business, Office & Industrial\Hydraulics, Pneumatics, Pumps & Plumbing\Pumps & Pump Accessories\Vacuum Pumps\Diaphragm Pumps”. The seller is “spare_parts4u” and is located in this country: HK. This item can be shipped worldwide.