Be sure to stop by BOOTH 1239 at WEFTEC this year to get a SNEAK PEEK at the new things ZEP has up and coming. 


X6280, X6290, X6400 Series

Solids Handling Pumps with Explosion-Proof Motors // Hazardous Location

X6280, X6290, X6400 Series

Commercial duty sewage pumps for Class I, Division 1, Group C & D locations

Features and Benefits


  • Pumping stations
  • Parking lot dewatering
  • Parking garage sumps
  • Commercial sewage


  • Solids – 2” or 3"  (50  or 76 mm) spherical capability
  • Discharge – 2” or 3"  NPT vertical or 4" ANSI horizontal
  • Seals – dual mechanical carbon/stationary ceramic/rotary upper, carbon/stationary silicon carbide/rotary lower.
  • Construction – cast iron ASTM A-48, Class 30, 30,000# tensile strength, protected with a corrosion resistant baked on epoxy powder coating
  • Seal leak probes
  • Balanced concentric pump housing and impeller
  • Attaching hardware – 304 stainless steel
  • Square ring seals - Viton
  • Impeller – cast iron vortex (X6280, X6400)
  • Optional:
    • Additional cord length
    • Silicon carbide seals
    • Bronze Impeller (X6290 only)
    • Non-sparking rail systems


  • FM approved and CSA listed Class I, Division 1, Group C & D construction
  • Stator – Class B or F insulation and lead wires
  • 416 stainless steel motor shaft
  • Oil-filled motor housing
  • Finned cast iron housing for faster heat dissipation
  • Integral overload protection (1 Ph)
  • Thermal sensors with lead wires (3 Ph)
  • Ball bearings – upper and lower high carbon chromium steel
  • Power cable length – 25’ (8 m)

Note: Product information presented here reflects conditions at time of publication. Consult factory regarding discrepancies or inconsistencies.

Product Specifications

  • 25’ (8 m) of heavy duty power cable.
  • Protected cable entrance.
  • Each conductor is individually sealed to eliminate cord wicking of liquids.
  • Lifting bracket.
  • Oil-filled motor housing assures uniform heat distribution, lubricates bearings and conducts heat for cooler running.
  • Heavy-duty motor features ball bearing construction. Class B or F motor insulation is double-dipped and baked.
  • Tandem seals: carbon/stationary, silicon carbide/rotary Buna-N elastomers lower seal.  Carbon/stationary, ceramic/rotary Buna-N elastomers upper seal.
  • Upper and lower high carbon chromium steel ball bearings.
  • Stainless steel shaft and hardware resists corrosion.
  • Standard: Seal leak detector probes.
  • Standard: Thermal sensor protection. 3 Ph motors have two normally closed temperature sensors imbedded in windings. 1 Ph motors have overload protection.
  • Balanced vortex impeller with top pump out vanes for seal protection.
  • Concentric case reduces radial loading for longer bearing and seal life.
  • 2” and 3” NPT vertical discharge (X6280, X6290) or 4" ANSI flanged horizontal discharge (X6400)
  • Units protected with corrosion -resistant, baked-on epoxy powder coating.
  • Finned motor housing for superior heat dissipation.
  • 1-1/2” NPT threads available for cord protection.
  • Viton square rings.