DGS-D is a dry-running gas seal,it is a double end gas seal,cartridge design,Uni-directional or bidirectional capability.The double end dry gas seal consists of two sets of single seals arranged in an opposed configuration.
The double end dry gas seals are suitable for low-pressure applications and where leakage of process gas to the atmosphere is unacceptable.Seal gas at a pressure higher than the process gas is supplied between the opposed seals. Seal gas leakage across the primary seal, along with any butfer gas, is introduced into the compressor/process. Seal gas leakage across the secondary seal is typically routed to the atmosphere. In case of primary seal failure, the secondary seal is designed to operate at primary seal conditions, which prevents uncontrolled leakage to the atmosphere.Separation seals as labyrinths and carbon rings are optionally available.Can be used as a replacement for Burgmann DGS double seal type John crane Type 28XP and Flowserve Gaspac D.
