Hi-Flo™ Compressor Valves

The CPI Hi-Flo™ compressor valve is a high performance valve that takes advantage of a unique sealing element profile. This aerodynamic profile provides:

  • Minimum resistance to flow
  • Lower pressure drop across valve
  • Improved reliability in services with liquids and debris in the gas stream virtually eliminating any foreign matter build up on the sealing surfaces.
Hi Flo Valve

Hi-Flo™ uses the aerodynamically superior, “V” rings

Springs and buttons are available with several spring strengths and styles depending on operating conditions, with or without plastic buttons

A balanced ported guard which allows an even flow around the circumference of the seat and provides an accurate location of spring pockets, essential for precise valve opening and closing.

The internal center bolt is a simple, reliable design, that is easy to assemble, cannot come lose or escape and is readily reversible for use as suction or discharge.

Play  Hi-Flo™  Valve Animation

Performance Advantage

Flat ring designs result in a greater pressure drop because the gas flow through such valves must deflect 90° at two locations to pass around the ring or plate. The  Hi-Flo™  design eliminates these drastic changes in direction and efficiently directs the flow of the gas through the valve.

The aerodynamic Hi-Flo™ design reduces valve pressure drop by providing a low resistance to gas flow. Improved compressor performance can be realized since valve power losses and valve capacity losses are directly related to valve pressure drop.

Reliability Advantage

The Hi-Flo™ valves perform extremely well under the dirty gas and liquid slug conditions where flat ring valves typically fail. The aerodynamic angle of the Hi-Flo sealing element deflects any debris or liquid that may be present in the gas stream, virtually eliminating any build-up on the sealing surfaces.

Hi-Flo™ Valve Application Summary

Ring MaterialRecommended RPM RangeMaximum Operating TemperatureHi-Flo™  Advantages

<1800 rpm

<1800 rpm
225° F/ 107° C

425° F/ 218° C
•Good performance with liquids or dirty service
•Aerodynamic flow results in lower pressure drop
•Available with finger or plug-type unloaders

Compressor Valves Brochure