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Plan 53B
PLAN 53B is used for the double seals of arrangement 3 seal, that is, the pressure of the barrier fluid is higher than the maximum pressure of the seal chamber, and the pressure of the barrrier fluid is realized by the bladder accumulator;
The barrier system of this scheme is gas-free system, which uses a bladder-type accumulator to prevents contact between the pressurization gas and the barrier liquid, and allows for high-pressure operation.
Piping Plan 53 is usually chosen over Piping Plan 52 for dirty, abrasive, or polymerizing products that would either damage the seal faces or cause problems with the buffer liquid system if Piping Plan 52 were used.
The clean barrier liquid provides lubrication to the seal faces, but the barrier liquid that passes across the inner seal faces will enter the pumped process stream. Therefore, the process liquid shall be compatible with the barrier liquid and be able to tolerate a small amount of contamination from the barrier liquid.
PLAN 53B is used for the double seals of arrangement 3 seal, that is, the pressure of the barrier fluid is higher than the maximum pressure of the seal chamber, and the pressure of the barrrier fluid is realized by the bladder accumulator;
The barrier system of this scheme is gas-free system, which uses a bladder-type accumulator to prevents contact between the pressurization gas and the barrier liquid, and allows for high-pressure operation.
Piping Plan 53 is usually chosen over Piping Plan 52 for dirty, abrasive, or polymerizing products that would either damage the seal faces or cause problems with the buffer liquid system if Piping Plan 52 were used.
The clean barrier liquid provides lubrication to the seal faces, but the barrier liquid that passes across the inner seal faces will enter the pumped process stream. Therefore, the process liquid shall be compatible with the barrier liquid and be able to tolerate a small amount of contamination from the barrier liquid.
