On our first stage of our hydrogen compressor..the head end discharge valves stay much hotter than the crank end discharge valves. We have 2 similar compressors that have this problem. There is no difference in the suction valves. the head end discharge valves run about 305 degrees on the head end and 370 on the crank end. We have changed these valves out a few times and the they keep getting hot. The other 2 stages are fine. Any suggestions?
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