Plate, Valve Coupler, S/S & Viton, Pfeiffer, DUO pump Part# 390009

The Pfeiffer Valve Coupler Plate, Part# 390009 uses Stainless Steel and Viton . One is hard metal. The other is flexible rubber. Together, they do a great job.

This valve coupler plate works on several pump models:

• Pfeiffer DUO2.5

• Pfeiffer UNO2.5A

• Pfeiffer UNO5A

It is also listed as compatible with the DUO 2.5 pump family in general.

This plate is not just sold by itself. It comes as a key part inside several complete repair kits:

• Minor Repair Kit for Pfeiffer DUO2.5 (Part# 194324)

• Motor Coupling Kit for Pfeiffer DUO2.5 (Part# PKE06001T)

If you buy either of these kits for your DUO2.5 pump, this valve coupler plate will be inside. But if you only need to replace this specific part by itself, now you know the exact part number to order.