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SPECIAL DUTY SEALS - DOUBLE CARTRIDGE EDP - ETHANOL DOUBLE PUMPER The EDP is a back-to-back, multiple seal assembly that was designed exclusively for sealing abrasive products where positive lubrication is required from an external source without dilution. The design isolates the metal components and prevents abrasive & corrosive pumped products from entering the stuffing box and causing erosion problems that require expensive repair. Bi-Directional Radial Flow Pumping Ring The pumping ring with tangentially drilled flush ports remove destructive heat from the seal cavity for cooler operation and extended reliability. The EDP is ideal in closed-loop flush systems. Easily Installed The EDP is a three-piece seal assembly that is pre-assembled and pre-set at the factory. Since the EDP sets externally, mechanics are not required to make critical installation measurements and can make axial adjustments with the equipment on-line. Versatile Provisions for fitting the seal are made internal to prevent the need to make expensive equipment modifications. Complete dimensional information is required to confirm fit specifications. Isolated Multiple Springs Multiple springs load evenly for cool operation and are isolated from the product to prevent clogging from suspended solids. Economical & Repairable Since the product is excluded from the stuffing box, the ESP is an economic alternative to replacement of expensive pump parts damaged by erosion. All sealing components that wear during normal operation can be easily replaced at a fraction of the cost of a new seal making performance of the repaired seal consistent to that of a new seal. EDP - SPECIFICATIONS Metal Parts: Standard metal parts: 316 SS Face Materials: Standard: High quality chemical grade carbon-graphite and silicon carbide O-ring Materials: Standard: Viton®, EPR and AflasTM Optional: Perfluorinated Elastomers Operating Capabilities: Pressure: 50 psig (3.5 bar g) Maximum Pressure Differential 75 psig (5 bar g) Maximum Pump Discharge Pressure Temperature: To 250°F (121°C) Speeds: 5000 fpm (25 m/s) ® 24 SEPCO Sealing Equipment Products Co., Inc.