Hi, we sometimes get questions on CCS about jet removal and the servicing of Non-return valves (NRV) on pumps. I though it might be useful to show a photo of the three service keys that were made for servicing classic stoves: The longer key at the top of the image is an NRV removal tool and is used to remove and replace the NRV assembly from the bottom of the pump cylinder, where it resides. The key at the centre of the group is a straight jet key and is intended for removal/replacement of the jet in a silent burner. Obviously it cannot be used for the vast majority of roarer burners as you do not have straight access to the jet. Finally, in the foreground we have a jointed jet key. This is an articulated key which allows the removal/replacement of the jet on roarer burners. The universal jont allows one to locate and then unscrew the jet, whilst getting access through the gaps between burner tubes. Best Regards, Kerophile
Thanks for that info Kerophile. I have seen a few of those jointed keys before and thought about buying one for my primus 210 with roarer burner, but was unsure if they would fit the 1 pint or two pint stoves. Are these keys universal in that they fit all 1 and 2 pint stoves? Thanks in advance
kerophile, thanks for sharing your information. in the abscence of the jointed key. is there another way to remove the jet from a roarer burner head? i did have success removing / replacing the jet on a 111B with the supplied wrench that came with the stove. i'm looking to remove a fouled jet from an optimus 00 and could use some ideas on how to remove it. the 111B wrench that i have is too large for the 00 jet. any input would be helpful. thanks, Lou
Hi dday, the jets used on the 1 and 2-pint stoves have generally the same external dimensions and aperture size. The one key is suitable for both sizes of stove. Hi Lou, the jet has a fine thread as has the burner. These threads are easily damaged and I would strongly advise that you get a proper jet key before attempting removal or replacement of the jet. Best Regards, Kerophile.
You might manage with a key that you make yourself, at least I have been able to open up a few nipples on roarer stoves with the key I made and that I wrote about in a topic that Diesel wrote about Burmos Burner Issue ====>>>>> Burmos burner issue Anders
What is the availability of the universal jointed key, and how much is it running for? I made the other keys myself by finling a long bolt, but I do not think I can make the jointed key...
Hi bark2much. One of the best stove-related bargains on the Web: Original Monitor full spares kit, 2 x jet, 4 x pricker, 1 x pump washer, 3 x burner, 3 x lid washers and jointed nipple key, suit 2 pint stoves. £4.95 (about US $10) It is on offer from one of the CCS Sponsors; Base-Camp. Here is the link to the page: Page Link This servicing kit includes two new jets and a jointed nipple key for a give-away price. Best Regards, Kerophile
Hi bark2much and possibly others I would also like to have a nipple key for my Optimus 00. A readily made key would be best and most convenient, but I had an idea about making a jointed key (sort of). Start by filing a slot in a metal bolt, just like you did for the straight keys. Cut the bolt a bit above the slot; I imagine that the whole bolt (including the slot) would be some 12-15 mm long. Drill a hole from the "flat" end (ie. opposite the slot) and cut threads. Screw an allen screw into the threaded hole, and make sure it stays there. Use locktite, glue, solder, weld or whatever - you'll never need to remove the screw again. Now, get a ball allen key. The ball allows the key to be angled somewhat relative to the screw axis. To use this contraption, one would place the slotted bolt onto the nipple, insert the allen key through suitable openings in the burner, insert the ball portion of the key in the screw head and hope for the best. It's just an idea I've been playing with, and if anything of this is practical, possible or understandale to anyone but myself, now that's another question Knut
Thank you, Kerophile, for the info. Thanks, Knutb for the idea. I think I will stick with the Monitor key set, however. I have a roarer burner (Gasirel brand) whose jet is a little off-center. I think I can replace the jet with the proper tool. The original jet puts out weak flame, despite the fact that the burner is a new one.
