Hello together, which high quality manufacturer and its corresponding quick connectors would you prefer to connect the fuel hose of a burner to its fuel pump? CEJN is mainly based in hydraulics industries, however, their 141 series (targetted towards breathing air couplings) was originally applied by Optimus Rectus is coming from pneumatic and compressed air industries, however, they allow to use some of their connectors also with liquids. Rectus Series 20 KA NW 2.7 appears quite interesting for utilization in liquid fuel stoves Are there any preferences over the other? Rectus seems to be way cheaper in comparison to CEJN. What about the serviceability in field? Thanks a lot for your help!
I’ve not encountered Rectus connectors so can’t comment on their ease of serviceability, but CEJN strip-down is possible, though a spring retainer and small ball-bearings don’t lend themselves to maintainance in camp.
One of the rules of KISS is not to mess round with something that works. CEJN is used in quite a few stoves but Ive not heard of Rectus. Even if Rectus is better keeping CEJN means you can share parts with others in an emergency
The Cejn connectors used by Optimus were customized (e.g rubber material), not standard 141 configuration. This only said as a word of caution that off the shelf producs with a certain purpose are not always suitable for other purposes.
Oh, thank you! That is good to know! In this case I have to better look for a original Optimus Nova stove and screw off the CEJN connector from this one. Unfortunately, CEJN has stopped producing the nipples for 1/8" hoses, so I cannot find them anywhere. One more reason to search an original stove and reuse its parts.
On my Kap Arctic, I had a heck of a time replacing the orings, but also sourced a replacement fitting the correct hose size as a backup sometime. Duane
You are talking about the O-rings in the female CEJN coupling, right? Because the afterwards used Nova bayonet adapter does only have one O-ring on the male plug.
Yes, a royal pita. I don’t care for the one on my Kap Arctic, not the easiest to operate, especially when out in the winter and you need to put all together. Just have to also remember to connect before pressuring the fuel bottle. Contrary, I like to keep things as original as possible, maybe a poor quality on my end at times. Duane
I used a rectus 20 on my DIY kap artic. It is smaller than a cejn from a Optimus nova. It worked fine. I still have it, but it has been sitting unused for years as I no longer have a pump for it. You can see it here... https://classiccampstoves.com/threads/kap-arctic-d-i-y.18451/ I would only ever have used it with kerosene.
Yeah, this is why I would like to use a Primus pump with integrated shutoff valve as the pump base model and upgrade this with a quick connector. The shutoff valve does also provide additional safety and enables storage of the fuel bottle in pressurized state, so there is no need for repeated pumping before individual fireup. This is interesting! Why did you select Rectus over CEJN? At least, they both have BSP G1/8 inch threads, so experimenting with the competitor won't be much of a problem.
The default 141 configuration is using NBR as sealing material. NBR should be completely fine for white gas, no?
I've rebuilt 6 CEJN connectors using Coleman pump O-rings over the last few years and on one occasion a little brass washer launched across my basement rendering the now disassembled connector and pump useless. It would have been a very costly loss if I had not been extremely lucky in finding that little washer. If it weren't for @presscall 's exploded view of the connector I would have never attempted the process, in fact I probably threw away 2 connectors that could have been repaired if I had known that at the time. I might add that if you have a new to you pump or one that has not been used in quite a while placing a few drops of fuel into the connector before inserting the fuel line in case the O-rings are stuck to the internal parts to prevent tearing, just a thought.
