Sinking Creek 4WD Association

Does anyone know if the return lines on a 6.2 are high pressure or low pressure? I wouldnt think so because the pressure stops at the injectors but I wanted to see if anyone knows for sure. Thanks

fuel returns are low pressure. on a 6.5 gm diesel most have spring type clamps on a very small (1/8"??) hose. blue ridge diesel says that spring clamp is not required to be on the line, so it cant be very much pressure at all.