Hello everyone. I have now bought an Optimus Polaris pump so it can replace the original plastic pump for the Primus Omnifuel I. But as usual, things are not plug and play it seems. I figured that since both the Polaris and Omnifuel are compatible with gas canisters, then the pump from Polaris would fit the Omnifuel. But when I tested it out, no fuel would come out of the pump because the Omnifuel can't open the valve on the Polaris pump. It seems that Optimus has made a solution that prevents their pump to be compatible with Primus's stoves? Has anybody else tried the same with any better luck, or perhaps figured out a way to solve this issue? If someone wonders about anything about my question, feel free to ask and I'll try to explain the best way I can.
Maybe spike that opens the valve of gas canister is a bit longer in Optimus Polaris and they have made their pump so that spike has to be as long as in their Polaris stove's fuel hose. Try to find some small piece of metal that sits on Optimus Polalaris pump's valve so that spike of Primus Omnifuel hose pushes valve more down. Just be careful that spike of Omnifuel's won't brake. Some people have had problems with some canister stove that spike of stove or hose won't push canister valve open. "Field solution" for that problem is to find very small stone (2mm) and put it on canister valve that spike on stove or hose will push valve more down.
@Kristian123 The Primus valve uses a thicker o-ring. If you must use the optimus pump on your primus stove try a thinner o-ring with the same outside diameter.
Thanks for the tip @HunterStovie and @Afterburner. Ill try to find a new thinner O-ring then. I choose to use the Polaris pump on the Omnifuel because I like the Omnifuel a lot, but not the plastic pump that Primus makes. I just don't trust having moving parts fitted to a bottle with plastic like that close to the heat source. The Primus pump is probably safe, but I'm sort of tired of learning things the hard way these days.
Hmmm. There might be better ways. Once you've got it run you will be the proud owner of two ! shut-off valves in a row. That is, technically spoken, nonsense. I can understand your approach of replacing the Primus pump, I did that as well. But of course not with the technically inferior Polaris pump. Just look at the alloy threading instead of more durable brass as veryone else does. Iff ! you make a replacement then with the old and proven Optimus pump with CEJN connector. The same for the Cartridge connection. Just as an idea you might want to have a closer look at my solution. Everything else is....just a solution juergen
@ArcticFlame That solution looks really interesting indeed, probably as you say better than the new Katadyn pump, but unfortunately I lack both the skills and the tools to make that improvement at the moment Thanks a lot for the suggestion and that nice description with pictures and all, someone else will probably try it out I'm sure.
