Great pump for your Redshank, Pre-1999 Avon used military-style valves, in which case you'll want the Barrel Pump with the check valve, Item # 1709. Later Avons should have Leafield valves. The end of the pump hose will fit in these valves, but an adapter gives you a more hassle-free fit. If you have Leafield C7 valves, Item # 14821 is the adapter. If you have Leafield B7 or military valves, get Item # 1716.9.
Answered on 4/9/2013 by Clyde from NRS
NRS 5" Barrel Pump - No Check Valve
I have an NRS Osprey and I want to know if I need this pump with or without the check valve? Or does it matter?