Watermain Supply™ · Environmental Submersible Pump
PR3 — 3 in Pollution Recovery Pump
The replacement for the discontinued Grundfos Redi-Flo 3 (SQE-NE): a Grundfos SQE 3 in submersible with its permanent-magnet smart motor, fitted with a continuous Teflon or HiLo motor lead for leachate, groundwater recovery and dewatering wells. 44 models, 5 to 30 GPM, 1/2 to 1-1/2 HP. Normal lead time is 3-4 days after receipt of order; 24 hr expedite available.
Redi-Flo 3 Replacement
5, 10, 15, 22, 30 GPM Rated Flow
1/2-1-1/2 HP
33-450 ft Head at Rated Flow
Grundfos SQE Smart Motor
Continuous Teflon or HiLo Lead
100, 150 or 200 ft Lead
3 in Min. Well
115V or 230V 1Ph 2-Wire
Dry-Run and Overload Protection
Ships 3-4 Days After Order · 24 hr Expedite
22-38 lb Weight
Overview
Grundfos no longer makes the Redi-Flo 3, the SQE-NE environmental pump that many landfills and remediation sites were built around. The PR3 is how those wells keep running: a current Grundfos SQE 3 in submersible, the same smart-motor platform the Redi-Flo 3 was based on, fitted with one continuous chemical-resistant motor lead in place of the standard 5 ft cable and splice. The lead is the part most often attacked in a contaminated well, and here it runs from the motor to the surface with nothing to fail in between.
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Drop-in for 3 in wells. Same 3 in diameter, same 2-wire single-phase supply and the same SQE flow classes the Redi-Flo 3 used.
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Continuous lead, your choice of jacket. Teflon twisted, Teflon jacketed or HiLo jacketed, 100, 150 or 200 ft, supplied as a complete kit with the motor connector.
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Smart motor protection built in. Dry-run, over- and undervoltage, overload, locked-rotor and over-temperature protection, soft start and up-thrust protection.
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Level control when you need it. Add a Grundfos CU 300 status box and a level sensor to hold a constant drawdown; without one, the pump runs at full speed like a conventional 2-wire submersible.
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Honest about the limits. The SQE pump end is stainless steel with polyamide impellers and NBR seals, not the PVDF of the old Redi-Flo 3. For free product or chlorinated solvents, use a Teflon-fitted PR4-E or PR4 in a 4 in well.
What Ships and What It Needs to Run
Included: the Grundfos SQE pump and motor for the model you select, and the continuous 12 AWG 2 conductor plus ground lead kit in the jacket and length you select, with the bottom assembly for the SQE motor.
Lead time: normal lead time is 3-4 days after receipt of order. For next-day shipping, add Expedite Service - 24 hr to the order.
Level control, ordered separately: the CU 300 status box, level sensor and potentiometer are on our Grundfos SQ and SQE Pump Accessories listing.
Never connect: a capacitor, a conventional control box or an external frequency drive.
Longer leads, drop pipe and safety cable: sized to your well and quoted or ordered separately.
Built from a genuine, factory-new Grundfos SQE and a chemical-resistant continuous lead, for Watermain Supplyâ„¢, an independent industrial supplier. The PR3 is not a Grundfos Redi-Flo 3 and is not made or endorsed by Grundfos.
Warranty
30 days from purchase on the package, from Watermain Supplyâ„¢. The PR3 replaces the factory motor cable with a continuous third-party lead, so it is covered by our package warranty rather than the original Grundfos warranty.
Specifications
| Specification |
Value |
| Package |
Grundfos SQE 3 in submersible pump and motor with a continuous 12 AWG chemical-resistant motor lead kit |
| Replaces |
Grundfos Redi-Flo 3 (SQE-NE), discontinued |
| Flow classes |
5, 10, 15, 22 and 30 GPM nominal |
| Horsepower |
1/2 to 1-1/2 HP |
| Supply |
1 x 115V (1/2 HP only) or 1 x 230V, 60 Hz, 2-wire plus ground |
| Motor |
Grundfos MSE 3 permanent-magnet motor, 3,000 to 10,700 rpm, integrated electronics |
| Protection |
Dry run, over- and undervoltage, overload, locked rotor, over-temperature; soft start; up-thrust bearing |
| Lead |
Continuous, no splice: Teflon twisted, Teflon jacketed or HiLo jacketed; 100, 150 or 200 ft; 12 AWG 2C + G; complete kit with SQE motor connector |
| Discharge |
1 in NPT (5 GPM); 1-1/4 in NPT (10, 15 GPM); 1-1/2 in NPT (22, 30 GPM) |
| Well diameter |
3 in minimum |
| Setting |
Up to 500 ft below static water level; at least 20 in below pumping water level |
| Liquid |
Grundfos rates the SQE for water pH 5 to 9, up to 86°F |
| Warranty |
30 days from purchase on the package |
Source: Grundfos SQ, SQE data booklet and installation instructions; PR3 continuous motor lead data sheet.
Models & Performance — Will It Do What You Need?
Pick a model whose head at your flow covers the lift from the pumping level, the pressure at the discharge (2.31 ft per psi) and friction in the drop pipe. Head is the standard SQE curve; the lead does not change it.
5 GPM class · 1 in NPT · 9 models · range 1.5-8 GPM
| Model |
HP |
0 GPM (Shut-off) |
1.5 GPM |
3.7 GPM |
5 GPM (Rated) |
7.4 GPM (Max) |
| 5 SQE05-90 |
1/2 |
153 |
147 |
121 |
86 |
46 |
| 5 SQE05-140 |
1/2 |
230 |
222 |
185 |
131 |
77 |
| 5 SQE05-180 |
1/2 |
309 |
298 |
249 |
177 |
108 |
| 5 SQE07-230 |
3/4 |
387 |
374 |
314 |
222 |
138 |
| 5 SQE07-270 |
3/4 |
465 |
450 |
379 |
270 |
169 |
| 5 SQE07-320 |
3/4 |
543 |
526 |
443 |
315 |
200 |
| 5 SQE10-360 |
1 |
621 |
601 |
508 |
360 |
230 |
| 5 SQE10-410 |
1 |
700 |
678 |
572 |
405 |
260 |
| 5 SQE15-450 |
1-1/2 |
777 |
753 |
636 |
450 |
291 |
10 GPM class · 1-1/4 in NPT · 7 models · range 3-15 GPM
| Model |
HP |
0 GPM (Shut-off) |
3 GPM |
7.5 GPM |
10 GPM (Rated) |
14.9 GPM (Max) |
| 10 SQE05-110 |
1/2 |
147 |
141 |
125 |
105 |
29 |
| 10 SQE05-160 |
1/2 |
224 |
214 |
192 |
164 |
56 |
| 10 SQE07-200 |
3/4 |
290 |
283 |
251 |
215 |
82 |
| 10 SQE07-240 |
3/4 |
358 |
352 |
311 |
267 |
110 |
| 10 SQE10-290 |
1 |
434 |
428 |
380 |
328 |
135 |
| 10 SQE15-330 |
1-1/2 |
509 |
503 |
449 |
390 |
161 |
| 10 SQE15-370 |
1-1/2 |
565 |
558 |
498 |
434 |
178 |
15 GPM class · 1-1/4 in NPT · 8 models · range 4-20 GPM
| Model |
HP |
0 GPM (Shut-off) |
3.9 GPM |
9.7 GPM |
15 GPM (Rated) |
19.3 GPM (Max) |
| 15 SQE05-70 |
1/2 |
117 |
114 |
104 |
75 |
43 |
| 15 SQE05-110 |
1/2 |
183 |
179 |
164 |
123 |
68 |
| 15 SQE07-150 |
3/4 |
242 |
237 |
216 |
164 |
94 |
| 15 SQE07-180 |
3/4 |
300 |
296 |
269 |
205 |
118 |
| 15 SQE10-220 |
1 |
361 |
355 |
323 |
246 |
141 |
| 15 SQE10-250 |
1 |
421 |
415 |
376 |
287 |
164 |
| 15 SQE15-290 |
1-1/2 |
481 |
474 |
430 |
328 |
186 |
| 15 SQE15-330 |
1-1/2 |
525 |
517 |
470 |
355 |
203 |
22 GPM class · 1-1/2 in NPT · 6 models · range 7-33 GPM
| Model |
HP |
0 GPM (Shut-off) |
6.5 GPM |
16.2 GPM |
22 GPM (Rated) |
32.4 GPM (Max) |
| 22 SQE05-40 |
1/2 |
60 |
55 |
46 |
36 |
0 |
| 22 SQE05-80 |
1/2 |
119 |
110 |
95 |
77 |
21 |
| 22 SQE07-120 |
3/4 |
176 |
165 |
143 |
117 |
42 |
| 22 SQE10-160 |
1 |
233 |
220 |
191 |
159 |
62 |
| 22 SQE10-190 |
1 |
291 |
274 |
240 |
200 |
82 |
| 22 SQE15-220 |
1-1/2 |
348 |
329 |
288 |
240 |
102 |
30 GPM class · 1-1/2 in NPT · 4 models · range 8-42 GPM
| Model |
HP |
0 GPM (Shut-off) |
7.9 GPM |
19.7 GPM |
30 GPM (Rated) |
39.4 GPM (Max) |
| 30 SQE05-40 |
1/2 |
67 |
63 |
50 |
33 |
5 |
| 30 SQE07-90 |
3/4 |
138 |
130 |
110 |
82 |
33 |
| 30 SQE10-130 |
1 |
208 |
196 |
170 |
126 |
61 |
| 30 SQE15-170 |
1-1/2 |
266 |
253 |
225 |
176 |
91 |
Total head in feet from the Grundfos 60 Hz SQ / SQE curves (SQ and SQE share one curve, the SQE at 10,700 rpm), as published on our Grundfos SQE listings. 1 ft of head = 0.433 PSI.
Choosing the Lead
| Lead |
Best for |
Rating |
| Teflon Twisted |
Leachate, solvents and chemicals in water; round and flexible |
Type ZW 90°C wet; FEP to 150°C |
| Teflon Jacketed |
Free product, chlorinated solvents, the most aggressive chemistry; highest abrasion resistance |
Type ZW 90°C wet; FEP to 200°C |
| HiLo Jacketed |
Oils, solvents and chemicals in water; lowest cost |
-50 to 200°F; 75°C wet, 60°C in oil |
Lead kit part numbers
| Lead |
100 ft |
150 ft |
200 ft |
| Teflon Twisted |
RF3100TC |
RF3150TC |
RF3200TC |
| Teflon Jacketed |
RF3100TJC |
RF3150TJC |
RF3200TJC |
| HiLo Jacketed |
RF3100SJC |
RF3150SJC |
RF3200SJC |
Part numbers of the lead kit fitted to each build. Other lengths from 25 ft, and leads over 200 ft by the foot, are quoted; replacement kits are available.
Before You Buy — The Limits That Decide the Fit
| Check |
What to confirm |
| Liquid chemistry |
Leachate and groundwater with dissolved contaminants. The SQE pump end has polyamide impellers and NBR seals; for free product or chlorinated solvents use a PR4-E or PR4. |
| Well |
3 in minimum I.D. In larger wells or sumps, use the SQ/SQE flow sleeve to keep water moving past the motor. |
| Temperature |
Grundfos rates the SQE to 86°F. |
| Setting depth |
The lead is 100, 150 or 200 ft. Deeper settings need a longer lead: ask us. |
| Controls |
Run direct on a 2-wire supply, or add a CU 300 status box for level control and monitoring. Never a capacitor, control box or external drive. |
| Classified areas |
The pump runs submerged in the well; the wellhead, junction box and controls in a classified area are specified by the site engineer. |
Materials of Construction
| Part |
Material |
| Pump sleeve, outlet chamber, cable guard, shaft |
AISI 304 stainless steel |
| Impellers, chambers, guide vanes, valve casing |
Polyamide (30% glass-fibre reinforced) |
| Impeller bearings |
Tungsten carbide / ceramic |
| Valve seat, seals |
NBR rubber |
| Motor stator, rotor, top cover |
AISI 304 stainless steel |
| Motor lead |
FEP (Teflon) or STPE (HiLo), 12 AWG stranded copper |
Source: Grundfos SQ, SQE data booklet, construction; PR3 continuous motor lead data sheet.
