Size; 3 in. / DN 80 Type number Single flanged; c484-24-25 Double flanged; C483-24-26 Closing Flow Propane Single Flanged, Bottom of Tank Position* Gpm; 250 I/min; 946 Double Flanged, Bottom of Tank Position* GPM; 265 I/min; 1003 Single Flanged, Top of Tank Position* GPM; 250 I/min; 946 Double Flanged, Top of Tank Position* GPM; 290 I/min; 1098 Closing Flow NH Single Flanged, Bottom of Tank Position* GPM; 239 I/min; 905 Double Flanged, Bottom of Tank Position* GPM; 226 I/min; 855 Vapor Capacity Propane 100 psig / 6.9 bar Inlet, Single Flanged, Bottom of Tank Position** Scfh; ----- Scmh; ----- 100 psig / 6.9 bar Inlet, Double Flanged, Bottom of Tank Position** Scfh; 127,000 Scmh; 3568 100 psig / 6.9 bar Inlet, Single Flanged, Top of Tank Position* Scfh; ----- Scmh; ----- 100 psig / 6.9 bar Inlet, Double Flanged, Top of Tank Position* Scfh; 148,000 Scmh; 4191