1, 0-20 psi adjustable high Pressure Propane Regulator Valve, inlet: QCC1 NUT propane gas fitting adapter connection with handwheel grip. outlet: m8*1 NPT female pipe thread. 2, Standard connector accessories: 1/8" NPT male to 5/16" Hose bard, 1/8" NPT male to 1/4" Hose bard,1/8" NPT male to 3/8" flare male,1/8" NPT male to 1/4" NPT male thread connection fitting. 3, High pressure regulator inlet pressure: 25-250 psi; outlet pressure:0-20 psi, flow capacity (max): 142800 BTU/hr ;0-3 Kg/hr; Just switch the adjustable red knob to control the firepower from 0-20PSI. 4, High pressure 20 PSI adjustable regulator with an all new plastic hand turn nut for easier tank swaps.The adjustable outlet pressure of 2.5 to 20 psi. Set .