GAP 296957 Check Valve Retainer for Gap Pro Series is a replacement component for Graco GAP spray foam guns. SPF Depot stocks OEM and aftermarket GAP parts including chambers, side seals, o-rings, check valves, rebuild kits and repair components.
I ordered a new side block for a gusmer ap foam gun and when I went to install it the threads on the filter side where not tapped deep enough and I had to take it to a fab shop and have them retap it. Not a big deal but thought you should know.