Grasshopper
18-05-2010, 09:51 PM
Does anyone out there have experience with Series 10 challenger butterfly vales? my application of this vales is on a -40f vessel for a spiral freezer. We have had problems with the shaft seal twice now on this valve but, this time it seams it has sealed itself back up. When the system is in operation the compressor runs @ about 9.5hg and then when the system shuts down the pressure builds up to around 50 psi and then we manually pump it down when the spiral freezer is not operating. Any thoughts would be good.