Greetings,
We had some 3-way purge valves passing liquid to the can while on gas operation. We have opened one of them and there was small coking in the purge air line port. So there are two problems liquid passing to can + liquid present in the purge port. I don't know why, but one of the GE told me that this is the common place for coking (he means usually coking happens in the purge air port). I can't understand why this happens, because this tells us that there was diesel in the purge port.
Thank you in advance and here is the picture of the 3 way valve.
https://postimg.org/image/pwr6w4e1z/
We had some 3-way purge valves passing liquid to the can while on gas operation. We have opened one of them and there was small coking in the purge air line port. So there are two problems liquid passing to can + liquid present in the purge port. I don't know why, but one of the GE told me that this is the common place for coking (he means usually coking happens in the purge air port). I can't understand why this happens, because this tells us that there was diesel in the purge port.
Thank you in advance and here is the picture of the 3 way valve.
https://postimg.org/image/pwr6w4e1z/