Duff Company Catalog by Duff CompanyView 1 Page hoffman no 500 steam valve by Duff Company [Page 318] - duff co no 1-a air valve a float-type vent with adjustable port ... up to 1 1/2 psi max pressure 10 tem not requiring psi ing 1/8 angle hoffman ... air valve heating no 40 steamair valve a float-type vent with a single ... nonadjustable port for use on ordinary one-pipe ... sysproportional ventno 500 steam or water air valve for convectors and ... a disc-type vent with built-in check valve for automatic venting can be taken ... from lime.1/8 straight shank max steam pressure 15 psi fig no fig no fig no ... 7619 price price 41940 price 7620 no 76 air vent for vacuum steam system ... float-type vents each with single non-adjustable no 4 quick steam valve port for ... air from thermostatic air vent for steam systhe mains of medium and large size ... |
Heating by Duff CompanyView 1 Page hoffman no 500 steam valve by Duff Company [Page 48] - duff co no 1-a air valve a float-type vent with adjustable port ... up to 1 1/2 psi max pressure 10 tem not requiring psi ing 1/8 angle hoffman ... air valve heating no 40 steamair valve a float-type vent with a single ... nonadjustable port for use on ordinary one-pipe ... sysproportional ventno 500 steam or water air valve for convectors and ... a disc-type vent with built-in check valve for automatic venting can be taken ... from lime.1/8 straight shank max steam pressure 15 psi fig no fig no fig no ... 7619 price price 41940 price 7620 no 76 air vent for vacuum steam system ... float-type vents each with single non-adjustable no 4 quick steam valve port for ... air from thermostatic air vent for steam systhe mains of medium and large size ... |
