AIR VENT, 1/8" MPT, SIDE MOUNT, 12 PSI;REPLACES DOLE 1933, HOFFMAN 40.;CLEVELAND;BOILER 0, 1 OR 3 PROBE TYPE UNITS.;STEAMER PRESSURE STEAMERS: B, F, J, K.;MARKET FORGE;BOILER STEAM COIL UNITS (FRONT,REAR), AUTO BLOW-DOWN GAS;(180,000 BTU), ELEC (24KW), 4 & 6 BURNER UNITS.;STEAMER MODULAR GAS STEAM GENERATORS,