
Sprinkler winterization - How do I winterize my irrigation
31/1/2018· Connect the compressor hose to the blow out adapter. Set the pressure regulating valve on the compressor to 50 psi for poly pipe systems or 80 psi for PVC pipe systems. Turn on the irrigation loion you want to blow out. Turn on the compressor. Gradually increase the flow of air from the compressor flow valve (not from the sprinkler control