• Model: FloMax FNBL-59 Piston Spring
• Compatibility: FNBL ball lock series diesel fuel nozzles
• Material: High-tensile steel, fully enclosed spring design for superior fatigue resistance
• Function:
  • Provides return force for the internal piston, enabling repeatable shut-off and reliable actuation
  • Located fully internal to the poppet, out of the fuel flow path for zero turbulence and reduced vibration
  • Supports high cycle rates and extended field service with minimal wear
• Design Features:
  • Enclosed inside the poppet to protect from debris, flow, and vibration
  • Patented FloMax design delivers smooth operation and measurable fuel flow boost
• Applications: Routine cylinder and piston maintenance for FNBL ball lock diesel fueling nozzles in mining, fleet, construction, and heavy industrial service

The FNBL-59 piston spring is essential for maintaining optimal nozzle actuation and extended life in FloMax FNBL ball lock fueling systems, supporting trouble-free operation and high flow rates.