Flow rate inconsistencies in Eldex reciprocating piston pumps can arise from various system and operational issues. Here are the primary causes:

  • Insufficient Back Pressure (25 psi minimum required)
  • Check Valve Malfunction / Particulates in Check Valves
  • Inlet Pressure Exceeding Outlet Resistance
  • Improper Compressibility Setting
  • Fluid Velocity Issues
  • Inlet Flow Restrictions
  • Air in the System / Cavitation
  • Incorrect Refill Rate
  • Piston Seal Leaks
  • Clogged Filters
  • Undegassed or Unfiltered Fluid
  • Mechanical Assembly Issues
  • Loose Fittings or Valve Connections
  • Electrical or Motor Issues

Refer to our Flow Rate Troubleshooting Guide or contact us at sales@eldex.com for more information.