Injection Molded Material Blanks

CPI molds engineered plastic materials used in the reciprocating compressor industry. These materials include Nylon, PEEK™ and other proprietary blends. Blank sizes are held to close tolerances and pass several quality checks to exceed customer requirements. Over one hundred different blank sizes are currently available. 

Today's advanced polymers have excellent mechanical properties and are capable of working at temperatures up to 400+ degrees F. In most cases, a simple conversion to low mass polymer sealing elements can give existing valves in reciprocating compressors a vastly increased life as well as reduced energy consumption and maintenance costs, without having to alter the valve body or modify the valve cage. The main advantages of polymer plates & rings over metallic are as follows: 

Valve Plate Materials

  • Heat resistance to impact fatigue
  • Ability to operate at higher lifts
  • High tolerance to dirt, liquids & chemicals
  • Reduced wear to valve seat & guard
  • Improved sealing capabilities

CPI offers non-metallic valve plates & rings or blanks

  • Manufactured to exact size
  • High stock availability
  • One source for all your Peek, Nylon & Mid-Temperature valve plates

CPI has extensive experience & capabilities to manufacture and mold thermo-plastic blanks & valve plates in the following materials:

  • Glass Filled Peek, Carbon Filled Peek
  • Glass Filled Natural & Yellow Nylon
  • Glass Filled Mid-Temperature Material

CPI Materials Technology Brochure