CPI Compression

Poppet Valves

Best suited for low differential pressures and slower speed compressors, our Poppet Valves are high lift valves with low-pressure drop across the sealing elements. Each valve is custom designed to match your needs and adaptable to existing plug style unloaders or new systems.


  • Available in single deck, deck-and-a-half, and double-deck configurations
  • Smooth, streamlined flow through the seat for maximum efficiency
  • Effectively used where debris or liquid are present
  • Low valve losses
  • Standardization of poppet design and part numbers allows a reduction in component inventory (same poppet can be stocked for multiple stages of valves)
  • Low risk of valve performance loss: generally, failure of a single poppet element is not as critical as with other valve types (concentric rings, ported plates)
  • Custom spring design for each application to optimize opening and closing times
  • Easily maintained and reconditioned
  • Suitable for:
    • Both lubricated and non-lubricated compressors
    • Sour gas applications
    • Compressor speed up to 500 RPM


  • Poppet sealing elements in PEEK and Nylon material
  • Seats and guards are offered in Ductile Iron and 4140 alloy steel for standard valves and in 17-4 stainless steel for corrosive applications
  • Springs are offered in chrome silicon and Hastelloy C materials
  • Capable of operating across a wide range of parameters, including:
    • temperatures up to 390°F/200°C
    • pressures up to 2,500 psi/170 bar