How to remove stuck NRV when the NRV head is damaged.
...fireball. After going over the whole stove I also wanted to check the nrv. I only could find the manual for the nrv that points to the side....
Also @Doc Mark might you have a chance to look at your NRV down the pump shaft? Mine was a first for me...took a 10mm socket from my toolbox......
New to me. It’s interesting that it has the external NRV. Cheers Tony
...removed the pump yet John, I need to make up a nice fitting spanner, but looking down the tube its the early style of cork cube NRV :content:...
The NRV pip and seal are important parts in this stove. If the NRV starts leaking, the fuel will rise in the pump tube. At the moment the fuel...
Good Morning, I have been successful in removing NRVs with my selfmade tool. Might be worth a try. You can see it here: New member and how to...
Put the NRV in a drill chuck to hold the bottom end. I’ve cracked a few too. Duane
The rising pump handle is not a reliable indicator for a leaking NRV. It rises only, when the pump leather is sealing off perfectly and the...
...about this. Does this work for you? [ATTACH] Looks like a normal NRV, to me, but as it appears to work as it should, I've not removed it. - Doc
Heat the tool up a bit (not hot enough to melt solder) to transfer some heat to the NRV. This also helps loosen a stubborn NRV.
An unfortunate circumstance: Optimus NRV Stuck Rounded NRV
Take care with the NRV. The best bet is to use a steel rod the same diameter as a snug fit in the pump tube (eg a bolt); with a slot cut 5mm wide...
Any ideas on where one might get a travel/reserve cap, and what other stoves might use the same one? I have not been able to get the NRV out so far.
Beautiful stove and excellent documentation. Very interesting to see the internal NRV details.
...somebody can help with advice on the removal and replacement of the NRV in a Primus 657 blowtorch. The NRV protrudes from the bottom of the...
, Very true John, a shame they did not contain the NRV heads as well, but never the less a great useful find John
Warning NRV
Unfortunately, there were some periods, when some factorys mounted the NRV without any washers. Just a small brass rim in the pump tube bottom,...
@loco7stove Can I purchase a set of your amazing nrv removal tools? Kindly, Nate
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