Made of Viton this is a replacement INLET & DISCHARGE valve assembly for Edson Double Diaphragm Pump 2500 Series, 25000 Series and the 25200 Series.
Viton® is a DuPont fluoroelastomer with good dynamic strength and excellent heat resistance (400°F/200°C). It is formulated to resist the effects of aromatic hydrocarbons and a variety of very aggressive fuels and chemicals. (Viton® is a registered trademark of E. I. DuPont.)
160-G-302 - Double Diaphragm Pump | Flapper Valve Part Breakdown - Data Sheet