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- For easy servicing and extended valve life, Spears® provides numerous maintenance repair kits and replaceable components for all repairable valves. Repair Kits generally include applicable seats, O-ring seals, diaphragms and other components typically subjected to normal operational wear. Full Cartridge Replacement Kits are available for all True Union style ball valves and ball check valves. These include complete valve assembly, less union nuts and end connectors. Replacement Cartridges can be directly installed in place of existing valve unit using existing union nuts and end connectors.
- Fluoroelastomer are special purpose fluorocarbon-based synthetic rubber categorized under ASTM designation of “FKM”. The FKM O-Ring is commonly referred to as a “Viton® O-ring” Elastomers.
- Spears® uses general purpose Type 1 FKM O-Ring with a minimum of 66% fluorine content for the best balance of overall properties.
- FKM exhibits a very broad range of chemical resistance, including petroleum oils, di-ester based lubricants, silicate fluids and greases, halogenated hydrocarbons, and mineral acids.
- FKM is not recommended for ketones, amines, anhydrous ammonia, hot hydrofluoric or chlorosulfonic acids, or automotive brake fluids.
- The maximum recommended service temperature of FKM is 400° F (204° C).
- ColorBlueNumber of Pieces10Size2-1/2 & 3 inTypeIndustrialManufacturerSpears ManufacturingManufacturer #TU2-VRK-030Nominal Size2-1/2 & 3 inSeries1800