Bullet VFD Inverter Pump Manager


Bullet VFD Catalog


Bullet VFD Instruction Manual

Bullet VFD Installation Steps

Bullet VFD Pressure Setting Steps

Bullet VFD Restart Steps after Problem Solving

Bullet VFD Forced Operation Steps for Self-Priming Application


Bullet VFD Technical FAQ


Bullet VFD Introduction Video

Bullet VFD Technical Video


VIFIDI Bullet VFD is the world’s first all-in-one & in-line pump inverter to upgrade and manage most of the water pumps. It provides constant water pressure and saves energy for most kinds of water usage. The product is integrated with all the required functionalities of a conventional inverter booster pump. With this design, the assembly time & cost of an inverter booster pump are significantly reduced, which sets up a new industry standard.

Features & Benefits

  • All-In-One: Simplification of the whole inverter pump system for cost-saving

  • In-Line Design: Easier assembling for time-saving

  • One-For-All: Adapt to most types and brands of water pump

  • Intuitive interface: Smarter setting and indication for pressure & error status

  • Constant water pressure: Better water usage experiences

  • Energy-saving up to 50%: Lower electricity bill and eco-friendly

  • Lower operating noise: Good nights’ sleep and a better life

  • Work in multiple directions: Flexible installation + pipework

  • All-Around protections: Pump lifetime extending and safest operation 

All-Around Protections

  • Over and low voltage protection
  • Over-current protection
  • Locked rotor protection
  • Phase failure protection
  • Excess temperature protection
  • Dry running protection
  • Leakage warning
  • Over-pressure protection
  • Anti-freezing protection


VIFIDI Bullet VFD empowering and managing any and every water pump to go variable speed and to provide constant water pressure.


  • PumpEye panel:

    Intuitive interface for smarter setting, and indications of pressure & error status

  • VFD / VSD inverter & pump protector: 
    Provide variable speed, constant water pressure, soft start & stop; All-around protection for water pumps and piping
  • Pressure sensor: 
    High-quality pressure sensor for precise and longevity operation
  • Flow switch: 
    Precise flow switch to achieve stable operation even at 2L/min (0.53GPM) water usage  
  • Check valve: 
    Durable non-return check valve to prevent back flowing and water hammer damage
  • Pressure tank: 

    Rechargeable 0.6L (0.16gallon) SS304 pressure tank to prevent pump short cycling and water hammer damage

  • Union pipe connectors: 
    Standard M1”(25mm), 1-1/4” (32mm), 1-1/2” (38mm), and a longer M1” (25mm) for taller junction box
  • Cable: 
    0.5M (19.7”) cable with Y type terminal for pump connection; 1.5M (59”) cable with plug for electricity connection

General Data

Model Max. pump
200V ~240V
BV1-08.A.2 0.8kW (1.0HP) 6A 9A 1 phase 1 phase
BV1-11.A.2 1.1kW (1.5HP) 8A 13A 1 phase 1 phase
BV1-11.B.2 1.1kW (1.5HP) 6A 10A 1 phase 3 phase
BV1-15.B.2 1.5kW (2.0HP) 8A 15A 1 phase 3 phase

  • Pressure setting range: 1bar~6bar (14psi~84psi)
  • Max. system pressure: 10bar (145psi)
  • Max. water temp: 50°C (122°F)
  • Max. ambient temp: 50°C (122°F)
  • Max. flow: 300L/min (79.3GPM)
  • IP: 55
  • Variable frequency range:
    • 50Hz: 1 phase out : 35Hz~50Hz / 3 phase out : 30Hz~50Hz
    • 60Hz: 1 phase out : 35Hz~60Hz / 3 phase out : 30Hz~60Hz
  • Inlet/Outlet thread:
    • Standard M1” (25mm), 1-1/4” (32mm), 1-1/2” (38mm), and a longer M1” (25mm) for taller junction box
    • RP or NPT thread
  • Dimension without union pipe connector (LxWxH): 230mmx170mmx230mm (1”x6.7”x9.1”)
  • Package Size (LxWxH): 250mmx250mmx240mm (9.9”x9.9”x9.5”)