√ Pressurized double seal, ideal for flammable, explosive or toxic medium with high pressure and high safety requirements;√ Prevent medium leaking into the atmospheric√ Recommended applications: hydraulic turbine of refinery hydrogenation plants, and rich amine liquid of desulfurization plants;√ Adapt fluctuation of positive and negative pressure difference and pump housing evacuation condition√ Prevent media leaking into the atmospheric, micro barrier fluid will get into pumped media√ Back-to-back arrangement, short axial dimension and compact designs
