Module L89 – Walk-in Pumping Station

Features and Specifications

The Arrow Model L89 is a complete prefabricated “walk-in” control/valve module for sewage pumping stations. This product is designed to eliminate hazards associated with underground valve vaults by providing above ground housing of the valves. The savings from eliminating the underground vault offset the cost of the building.


  • (2 or 3) Pump Control Center
  • Comes factory assembled (controls integrated into module upon delivery)
  • Compartmentalized design
  • 24 Volt PCP
  • Lightning protection (TVSS)
  • Transfer switch with status panel
  • 120V branch breakers
  • Motor circuit breakers with lockout provisions
  • Motor starters (FVNR, RVSS or AFD)
  • Pump overtemp & seal monitoring
  • Valve/Compartment piping
  • User-friendly automatic pump controller & back up float controls
  • Terminal connections and space for telemetry
  • Thermostatically controlled electric heater
  • Thermostatically controlled ventilation.
  • Insulated steel base frame & stone aggregate exterior
  • Entry Keypad & Insulated 4-panel door
  • Interior and exterior lighting


Nominal Dimensions

  • 8′ wide x 8′ long x 9′-9″ high

Approximate Weight

  • 4,000 lbs.

Standards & Approvals

  • U.L. Listed
  • Uniform Building Code
  • National Electric Code
  • Sensor Connections UL 689A