SKS Non Return Valve for TP11 Rennkompressor MOD 8979

I recommend this product

Bought these to replace the 25 year old originals in my Rennkompressor. Needed a bit of research to confirm I had the right parts but having done that it all went smoothly. Easy to fit, just make sure you don't lose the spring which is loose in the packet (I ended up using the old one). The rubber washer is next to useless and leaked on first test, so I put a few turns of PTFE plumbers tape on the threads, which is how the old one was installed and this works well.