Size; 3 in. / DN 80 Type number Single flanged; c484-24-40 Double flanged; C483-24-40 Closing Flow Propane Single Flanged, Bottom of Tank Position* Gpm; 400 I/min; 1514 Double Flanged, Bottom of Tank Position* GPM; 400 I/min; 1514 Single Flanged, Top of Tank Position* GPM; 400 I/min; 1514 Double Flanged, Top of Tank Position* GPM; 400 I/min; 1514 Closing Flow NH Single Flanged, Bottom of Tank Position* GPM; 361 I/min; 1366 Double Flanged, Bottom of Tank Position* GPM; 361 I/min; 1366 Vapor Capacity Propane 100 psig / 6.9 bar Inlet, Single Flanged, Bottom of Tank Position** Scfh; 181,000 Scmh; 5125 100 psig / 6.9 bar Inlet, Double Flanged, Bottom of Tank Position** Scfh; 181,000 Scmh; 5125 100 psig / 6.9 bar Inlet, Single Flanged, Top of Tank Position* Scfh; 190,000 Scmh; 5380 100 psig / 6.9 bar Inlet, Double Flanged, Top of Tank Position* Scfh; 190,000 Scmh; 5380