New/never used Old Stock. Wilden Air Operated Double Diaphragm 1.5 (vintage) pump M4/WT/TF/TF/CS. See codes in photo.. Construction = Cast iron. Ball Valves and O-Rings = Teflon. Valve Seats = Mild Steel. 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.