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Heavy Duty Submersible
Sump Pumps

Pump Curves available at
Provide submersible sump pumps for erosive/abrasive slurry/sludge transfer service

Water, radioactive with uranium and other main constituents in suspension, up to 7.7% solids by weight, up to 1/4" size with Brinell hardness of 370, 1.064 SG, ambient temperature

Duty: 70 GPM @ 619 ft. Total Head

Model: 6000 US-RX-HD2 (A10)
Commercial submersible centrifugal sump pump: abrasive-resistant, extra heavy-duty, explosion-proof (motor) design

Suction: 3" FF Flange (300#) equivalent with Nitronic 60 studs (8)

Discharge: (1") 2" FF Flange (300# rating) on centerline

  1. Material of construction: (Certified) Wrought, Fabricated Type 2507 Duplex (High Chrome) Stainless Steel
  2. Motor: Reliance Electric Duty Master explosion-proof submersible modified with 2507 duplex S/S bottom motor adaptor (by Corcoran), special outboard mechanical seal (by Corcoran, see No. 3), Viton O-rings and 50 feet of power and control cables: 40hp, 3505 rpm, 460v, TENV-XP enclosure, 250TY frame, with Steel-It 4 Part Type 316 Stainless Steel epoxy coating (by Corcoran)
  3. Mechanical seal (outboard): Crane Type 8B1 balanced pusher with Silicon Carbide (rotating) vs. Tungsten Carbide (stationary, pinned-in) mating faces, Viton Elastomers and Hastelloy C-276 metal parts
  4. Warrick moisture detection control circuit box, Type 2800-4D4
  5. Certified hydro-static Test #1: 750 PSIG
    (pump end only without motor or outboard seal)
  6. Certified performance test (witnessed)
  7. Certified hydro-static Test #2: 475 PSIG
    (complete pump with motor assembly)



Creamery required an 18' deep sump (with only 30% fill capacity) to be emptied as far as possible (submersible motor would be operating while exposed) at rate of 200 GPM @ 60 FT TH. Contained wastewater with widely fluctuating pH (1.9 to 12.5), up to 130°F.

Model: 5000 US-RC
Submersible Sump Pump
Material: 316 Stainless Steel

Size: 2" FF FL Discharge

  1. Reliance Duty Master explosion-proof continuous-in-air design submersible motor: 5 HP, 1800 RPM, TENV, 210 TY frame (class 1, groups C & D): Moisture sensing probes; automatic reset thermostats; tandem mechanical seals; (outside: carbon vs. silicon carbide, viton elastomers and 316 S/S).
  2. 316 L Stainless Steel epoxy coating on motor.
  3. 316 S/S anchor shackles (2) on motor.



Municipality required submersible sump pumps for dirty, clear water (no sewage) application, 50 GPM @ 150 FT TH.
Model: 3000 US-RX
Submersible Sump Pump
Material: Stainless Steel fitted mild steel
Size: 1.5" FF FL Discharge
  1. Reliance Duty Master explosion-proof submersible motor: 5 HP, 3600 RPM, TENV, 180 TY frame (class 1, groups C & D): Moisture sensing probes; Automatic reset thermostats; Tandem mechanical seals; (outside: carbon vs tungsten carbide, Viton elastomers and 316 Stainless Steel).
  2. 316 L Stainless Steel epoxy coating on motor.
  3. Galvanized steel loose pin anchor shackles (2) on motor.

Pump apple waste products with up to 3" diameter solids at rate of 400 GPM @ 30 FT TH. Match existing Hydro-rail submersible pump mount.

Model: 4000 US-RS (A70) VOR
Submersible Sump Pump
Size: 4" Flanged Discharge
  1. 316 Stainless Steel construction (pump end).
  2. Recessed (Vortex) impeller.
  3. Reliance duty master submersible motor: 7-1/2 HP 1800 RPM, TENV, 180TY frame:
    Moisture sensing probes, automatic reset thermostats, tandem mechanical seals (Outside: Carbon Vs. Silicon Carbide, Viton Elastomers & 316 Stainless Steel metal parts).
  4. Motor has 316L Stainless Steel-epoxy coating.
  5. 316 Stainless Steel loose pin anchor shackles on motor.

Diesel engine manufacturer required submersible sump pumps for hot water (up to 160°F) circulation:
900 GPM @ 139 FT TH and 1575 GPM @ 80 FT TH.

Model: 6000US-RS (A80): 900 GPM
Model: 6000US-RS (A90): 1575 GPM

Material: (Pump End) Stainless Steel-fitted carbon steel
Size: (900 GPM) 6" FF FL (150#) discharge
(1575 GPM) 8" FF FL (150#) discharge
  1. Reliance Electric Duty Master non-explosion-proof submersible
    motor: 60 HP, 1800 RPM, 460V, TENV, 1.15 SF, 320 TY frame with:
    a. special high-temp "H" insulation
    b. moisture sensing probes
    c. automatic reset thermostats
    d. tandem mechanical seals (outside: carbon vs silicon carbide,
    viton elastomers and 316 Stainless Steel)
    e. 316L Stainless Steel-epoxy coating
  2. Galvanized steel loose-pin anchor shackles on motor.
  3. Included moisture detection control circuit boxes, type 28004D1.