Abstract An improved apparatus containing activated carbon for the sorption of impurities from vapor-laden feed gas and a unitary fitting adapted for such apparatus are set forth. The improvement in the carbon sorber apparatus comprises a pair of check valves, the first disposed for permitting undirectional flow of laden feed gas from a supply line under superambient pressure into the inlet of a carbon sorber unit, and therein into contact with the bed of activated carbon sorbent, then out of said unit to ambient atmosphere as stripped exit gas, the second check valve disposed for supplying, in bypass of the carbon sorber unit and the first check valve, undirectional flow of ambient atmosphere into said supply line as subambient pressure occurs therein. The unitary fitting houses both said check valves disposed in proper interacting relationship for convenient, accurate, and compact installation of the apparatus.
A unitary fitting for a feed line through which vapor-laden gas is supplied intermittently to an activated carbon sorber, said fitting comprising: a housing enclosing a passageway and having at least three ports connected thereto, one port being an inlet for said vapor-laden gas and having means for connecting it to said feed line, a second port being an exhaust for said vapor-laden gas from said housing to the sorber and having means for connecting it to the inlet of said sorber, and a third port being an inlet for atmospheric air, a pair of check valves mounted in said housing, a first check valve disposed for discharging said vapor-laden gas through said second port, and a second check valve disposed for accepting atmospheric air flow through said third port.
Claim 2
Dependent Claim
130 words
A unitary fitting for a feed line through which vapor-laden gas is supplied intermittently to an activated carbon sorber, said fitting comprising: a housing enclosing a passageway and having at least three ports connected thereto, one port being an inlet for said vapor-laden gas and having means for connecting it to said feed line, a second port being an exhaust for said vapor-laden gas from said housing to the sorber and having means for connecting it to the inlet of said sorber, and a third port being an inlet for atmospheric air, a pair of check valves mounted in said housing, a first check valve disposed for discharging said vapor-laden gas through said second port, and a second check valve disposed for accepting atmospheric air flow through said third port.
Claim 3
Dependent Claim
14 words
The unitary fitting of claim 1 wherein the sorber is of the cartridge type.
Claim 4
Dependent Claim
16 words
The unitary fitting of claim 1 wherein said check valvEs are of the spring loaded type.
Claim 5
Dependent Claim
28 words
The unitary fitting of claim 5 wherein the passageway in said housing is connected to four ports, one of which is adapted for connection to pressure relief means.