Check these parts out that I used to eliminate the return lines from test port block.
1 - 1/8 in ID x 1/4 in MIP - brass hose barb
1 - 1/4" Female pipe connector
1 - 5/16" x 14/" barb to MIP adaptor
I also used a PPE cp3 high flow feed line kit to help eliminate main feed line from the test block. It contains the 1/2" to 3/16 barb and 3/16" cp3 inlet fitting.
1 - 1/8 in ID x 1/4 in MIP - brass hose barb
1 - 1/4" Female pipe connector
1 - 5/16" x 14/" barb to MIP adaptor
I also used a PPE cp3 high flow feed line kit to help eliminate main feed line from the test block. It contains the 1/2" to 3/16 barb and 3/16" cp3 inlet fitting.