Type; 1808A-61 Body Size, in.; 2 FNPT, Angle Relief Start-to-Discharge psig; 20 bar; 1.4 Spring Range psig; 15 to 40 bar; 1.03 to 2.76 Pressure Buildup Over Set Pressure psig; 10 bar; 0.69 Capacity (Air) SCFH; 78,230 at 30 psig Nm3/h; 2053 at 2.07 bar