cylinder 62 the flare gas is caused to reverse it upward direction to flow downwardly through the annularly shaped reverse flow channel 74 as indicated by the arrows 80 and 82 the lower end of the liner cylinder 62 is disposed somewhat above the bottom plate 60 and the gas discharging from the reverse flow channel 74 is again caused to reverse its direction and to flow upwardly into the annular orifice channel 64 as indicated by the arrows 84 the flare gas discharges at the exit port of the annular flow channel 64 provided at the top of the flare tip assembly 50 the flare gas can be discharged from the annular orifice 64 into the atmosphere in the form of a perimeter zone discharge or it can be passed to the tip 18 as shown in the previous figures the flare tip assembly 50 may be equipped with an externally disposed fluid injector assembly 86 and with the conventional pilot 20 also the upper portion of the internal wall of the liner cylinder may be lined with a refractory not shown if required to protect the structure from the burning flare gas the flare tip assembly 50 provides a reverse flow seal chamber between the flare conduit 52 and the annular orifice channel 64 during purge operations this reverse flow seal chamber serves to entrap a portion of the purge gas generally within the space formed in the reverse flow channel 74 below the seal place 68 and the lower portion of the.