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Armstrong International GP-2000R Back Pressure Regulating Valve. 1/2" NPT D25795 3 - 21 PSIG, D25857 14 - 157 PSIG, D25858 143 - 200 PSIG. 3/4" NPT D25859 3 - 21 PSIG, D25860 14 - 157 PSIG, D25861 143 - 200 PSIG. 1" NPT D25862 3 - 21 PSIG, D25863 14 - 157 PSIG, D25864 143 - 200 PSIG. 1-1/4" NPT D25865 3 - 21 PSIG, D25866 14 - 157 PSIG, D25867 143 - 200 PSIG. 1-1/2" NPT D25868 3 - 21 PSIG, D25869 14 - 157 PSIG, 25870 143 - 200 PSIG. 2" NPT D25871 3 - 21 PSIG, D25872 14 - 157 PSIG, D25873 143 - 200 PSIG.

Armstrong Series GP-2000R Full Port NPT Steam Back Pressure Regulating Main Valve
Cash Valve K10 Back Pressure Regulating Valve. 1/4" K10AWA01-E, 3/8" K10BWA01-E, 1/2" K10CWA01-E, 3/4" K10DWA01-E, 1" K10EWA01-E, 1-1/4" K10FWA01-E.

Cash Valve K10 Series Back Pressure Regulating Valve
Cash Valve K5 Back Pressure Regulating Valve. 1" K05EWA01-E, 1-1/4" K05FWA01-E, 1-1/2" K05GWA01-E, 2" K05HWA01-E.

Cash Valve K5 Series Back Pressure Regulating Valve
Watson McDaniel series 10691 tight shut-off relief and back pressure regulating valve. 1/2" 10691-12-N-3-E, 10691-12-N-2-E, 10691-12-N-1-E, 10691-12-N-1-T, 10691-12-N-2-T, 10691-12-N-1-T, 10691-12-N-3-V, 10691-12-N-2-V, 10691-12-N-1-V. 3/4" 10691-13-N-3-E, 10691-13-N-2-E, 10691-13-N-1-E, 10691-13-N-3-T, 10691-13-N-2-T, 10691-13-N-1-T, 10691-13-N-3-V, 10691-13-N-2-V, 10691-13-N-1-V. 1" 10691-14-N-3-E, 10691-14-N-2-E, 10691-14-N-1-E.

Watson McDaniel 10691 Series Relief & Back Pressure Valve
Watson McDaniel PBP Back Pressure Regulating PIlot. PBP-Y 3 - 25 PSIG range (yellow spring), PBP-B 20 - 100 PSIG range (blue spring), PBP-R 80 - 200 PSIG (red spring).

Watson McDaniel PBP Back Pressure Regulating Pilot Operator
Watson McDaniel series R relief and back pressure regulating valve. 1/2" R-12-N-4, R-12-N-3, R-12-N-2, R-12-N-1. 3/4" R-13-N-4, R13-N-3, R-13-N-2, R-13-N-2, R-13-N-1. 1" R-14-N-4, R-14-N-3, R-14-N-2, R-14-N-1. 1-1/4" R-15-N-4, R-15-N-3, R-15-N-2, R-15-N-1. 1-1/2" R-16-N-4, R-16-N-3, R-16-N-2, R-16-N-1. 2" R-17-N-3, R-17-N-2, R-17-N-1. 3" R-19-N-3, R-19-N-2, R-19-N-1.

Watson McDaniel R Series Relief & Back Pressure Valve