Cook Compression is an innovator in the design, manufacture and application of a complete selection of compressor valves. From precision-crafted metal plate valves to the latest, high-performance designs with non-metallic internals,we offer solutions for any reciprocating compressor in any type of service.Cook Compression manufactures complete valve assemblies, as well as plates, discs, rings, buttons, poppets,damper plates, spring plates, leaf springs and other metallic and non-metallic components for any make or model valve.Economical inventory.Converting to MOPPET valves results in tremendous inventory cost savings. Cartridges are universally interchangeable - from valve to valve or compressor to compressor. So there are fewer components to purchase and maintain. Repair technicians can always be fully prepared while keeping only a limited number of spares on hand.Repairs can be made incrementally, replacing individual cartridges only as needed and maximizing the service life of each component.Advantages.• Field repairable for reduced downtime and lower costs• Modular replacement cartridges restore valves without machining • Cartridge replacement is fast and easy - no special tools or training needed • Incremental repair capability maximizes service life of all components • Interchangeable cartridges reduce inventory costs • Manley®-valve-style radiused thermoplastic discs • Outstanding reliability, even under severe operating conditions • Superior materials for high resistance to corrosion and wear.Simply better.Maintenance advantages aside, MOPPET valves are excellent performers. They incorporate design features that have made the Manley compressor valve the world standard for reliability. Engineered thermoplastic discs are radiused to provide aerodynamic flow. Cartridges are precision- manufactured from stainless-steel alloys to withstand harsh operating conditions and resist wear and corrosion. As a result, MOPPET valves deliver outstanding results in applications no ordinary valve can handle.