- This topic has 6 replies, 4 voices, and was last updated 1 year, 5 months ago by Anonymous.
June 28, 2019 at 1:30 pm #2055AnonymousInactive
Dear all, checked the forum for topic’s on SOGAV valves. W34 is equipped with WW105 and W50 with WW250 or 255 model. As information is limited available, especially on functioning. It would be interesting too share experience and opinions concerning failures, wear, hrs before overhaul. Is overhaul even possible and who offers?
July 2, 2019 at 8:59 pm #2058cartwrightParticipant
- This topic was modified 1 year, 6 months ago by .
We have a W34, which came with what I was told are the standard issue gas valves. Every valve on our engine wore out, to failure, at just over 4500 hours run time- worn to the point that they had nearly double the allowable internal clearance. The cause of the failure was blamed on our fuel gas, that it was too “clean and dry”. We have pipeline spec quality fuel gas. After the failure, we have replaced all of the gas valves with a new style, that has a coating on the wear surfaces (sorry, I do not know model numbers on the valves). I plan to pull a couple of valves to inspect at our next major service, to see how they are holding up.July 3, 2019 at 12:16 pm #2060AnonymousInactive
I’m surprise to read about the running hours. How many hrs can be reached when operation conditions are okay? Would be nice to see the coated ones have more hours. When you can share your results would be great. ThnxJuly 3, 2019 at 4:12 pm #2061cartwrightParticipant
According to the maintenance schedule, they should be replaced at 16000 Hours.
I will definitely try to let you know what I find with the coated valves.July 3, 2019 at 4:30 pm #2062Robert AyresParticipant
We have 15740 hour on our 34SG. We have only change 1 gas admission valve out under warranty. It appeared to failing when Wartsila was on site for another issue, but it was still operating at that time.July 3, 2019 at 6:34 pm #2064Jeremy SaarParticipant
We began changing ours at 16k with very few failures in between. We now run them to 32k before replacing and we have very few failures in between. We do this with both the top load and old bottom load valves. We tried to rebuild bottom load valves with very little success, so we just replace them. We have not rebuilt a set of top loads, but the design is supposed to make a rebuild much easier.August 14, 2019 at 10:06 am #2074AnonymousInactive
Just spoke a 18V50DF powerplant operator that await an offer for replacing his WECS 8000 with UNIC3 and changing out the SOGAV Valves 250/255 with 759? Anyone experience? Whats the difference?
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