This compact and economical valve performs four important functions for your LMI pump:
1. Diaphragm type anti-syphon protection
2. Back pressure
3. Priming aid/line drain
4. Pressure Relief

  • Ergonomic design for easy control of functions.
  • Mounting connection that swivels 360º to the position best suited for the installation.
  • LMI’s tubing connection system for the most secure connection available with an electronic metering pump.
  • Hardware is protected from chemicals.

Priming with the 4FV is simple and is achieved by turning of the pressure relief knob (black). A recommended accessory for every LMI electromagnetic pump.

Data Sheet