mikesref
29-07-2008, 10:06 PM
I am working on a fish processing plant with a bitzer condensing unit with two 75 hp. screw compressors in parallel, I am having a problem with the discharge pipe off the #1 compressor with cracking(leaks)and joint stress ( you can see the pipe fittings warped from stress) The discharge line on the # 1 compressor is
2 1\8 in. is piped into a 3 1\8 in. manifold the #1 discharge line comes off the discharge valve approximately 8in. and go's in a long sweep 90 degree elbow were it 90's down into a 2 1\8 in ball valve then it bullheads (branch) into a 3 1\8 in tee. I have not had any problem with the #2 compressor, its discharge line comes off 2 1\8 in and 90's into the
3 1\8 manifold.
I have replaced the whole section of pipe and valve once, on the # 1 compressor and with in a year I have had numerous leaks. also when I examined the replaced valve you could see were the section of pipe inside the valve was seperated away from the valve. kind of like taking channel locks and squeezing the end of the pipe. I have checked for pressure drop between the valve and the oil seperator and there is none.
I am going to repipe this again and need to know the bes way. any ideas on whats happining?
Help
Mike
2 1\8 in. is piped into a 3 1\8 in. manifold the #1 discharge line comes off the discharge valve approximately 8in. and go's in a long sweep 90 degree elbow were it 90's down into a 2 1\8 in ball valve then it bullheads (branch) into a 3 1\8 in tee. I have not had any problem with the #2 compressor, its discharge line comes off 2 1\8 in and 90's into the
3 1\8 manifold.
I have replaced the whole section of pipe and valve once, on the # 1 compressor and with in a year I have had numerous leaks. also when I examined the replaced valve you could see were the section of pipe inside the valve was seperated away from the valve. kind of like taking channel locks and squeezing the end of the pipe. I have checked for pressure drop between the valve and the oil seperator and there is none.
I am going to repipe this again and need to know the bes way. any ideas on whats happining?
Help
Mike