When refrigeration systems are exposed to low ambient conditions, the condensing pressure (head pressure) will fall. If the head pressure gets too low, the metering device will not have enough ...

LOW-AMBIENT TROUBLESHOOTING Troubleshooting a low-ambient head pressure control valve with a pressurized dome can be pretty easy if you take the proper steps. If the outdoor ambient is below 70° and ...

[Ed] from Ed’s Systems, aka [Aussie50] took some time to demo his high pressure Frankenstein air compressor he stitched together from two refrigeration compressors. The two Danfoss SC15 ...