Franklin Electric Tri-Seal stainless steel submersible pump end (6 in High Capacity shown)
Franklin Electric Tri-Seal 4 in 10 GPM pump end performance curve
Franklin Electric Tri-Seal 4 in 15 GPM pump end performance curve
Franklin Electric Tri-Seal 4 in 20 GPM pump end performance curve
Franklin Electric Tri-Seal 4 in 25 GPM pump end performance curve
Franklin Electric Tri-Seal 4 in submersible pumps
Franklin Electric Tri-Seal floating stage exploded diagram
Franklin Electric Tri-Seal stainless steel submersible pump end (6 in High Capacity shown)
Franklin Electric Tri-Seal 4 in 10 GPM pump end performance curve
Franklin Electric Tri-Seal 4 in 15 GPM pump end performance curve
Franklin Electric Tri-Seal 4 in 20 GPM pump end performance curve
Franklin Electric Tri-Seal 4 in 25 GPM pump end performance curve
Franklin Electric Tri-Seal 4 in submersible pumps
Franklin Electric Tri-Seal floating stage exploded diagram

Franklin Electric 4 in Tri-Seal Submersible Pump End - Stainless Steel, 10-25 GPM

HP: 1/2 HP
Model - Head: 10FA05S4-PE at 10 GPM

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$645.47
SKU: 93821005
Weight : 8.0 lb
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Description
Franklin Electric · Submersible Pump End
4 in Tri-Seal Submersible Pump End
30 Franklin builds, 10-25 GPM, 1/2 to 10 HP.
10-25 GPM Rated Flow · 1,950 ft Max Head
1/2 to 10 HP
4 in Motor Fit
Stainless Steel
1-1/4 in NPT Discharge
UL 778 · CSA 108 · NSF/ANSI 61 (Pump End) and 372
3.90 in Dia x 10.64-76.66 in L
7-35 lb Weight
What Ships and What It Needs to Run

Included: the pump end only; no motor.

Motor required, ordered separately. A Franklin 4 in motor of the same horsepower: 2-wire, 3-wire single-phase or three-phase, plus the motor control it needs (control box, starter or drive).

Drop cable and splice kit: sized to your setting depth and ordered separately.

Overview

The Tri-Seal 4 in submersible pump is built on Franklin’s patented Tri-Seal floating stage system (U.S. Patent No. 7,290,984). Each 300 Series stainless steel hub floats with its impeller and keeps a positive seal, which raises efficiency and protects the stages against wear when the well carries abrasives.

  • 300 Series stainless steel hub floats with the impeller, maintaining a positive seal
  • Phenolic washer provides downthrust protection
  • Scalloped impellers provide high efficiency performance and abrasion resistance
  • Advanced thermoplastic diffuser and disc, a proven abrasion-resistant material
  • Floating stage design allows each impeller to float independently
Genuine Franklin Electric equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier.
12-Month Franklin Electric Warranty

Covered by Franklin Electric’s Limited Warranty for 1 year from the date of original purchase.

Source: Franklin Electric 4 in and 6 in Submersible Pump Owner’s Manual (106467101).

Specifications
Nominal flow 10-25 GPM
Horsepower 1/2 to 10 HP
Discharge 1-1/4 in NPT
Check valve Removable spring-loaded check valve
Materials 300 Series stainless steel discharge head and motor bracket
Certifications UL 778, CSA 108, NSF/ANSI 372, NSF/ANSI 61 (pump end only)
Frequency 60 Hz
Motor Matching Franklin Electric 4 in submersible motor, ordered separately
Models & Performance — Will It Do What You Need?

Find your horsepower in the row, then read across. Total head is the lift from the pumping water level, plus the pressure you want at the tank (2.31 ft for every PSI), plus friction in the drop pipe. The output tables give the flow you get at a 30/50 PSI pressure switch for your depth to water.

10 GPM class · 7 builds, 1/2 to 5 HP

10 GPM class — total head in feet

HP 0 GPM (Shut-off) 3 GPM 8 GPM 11.5 GPM 15.5 GPM (Max)
1/2 HP 235 227 181 130 53
3/4 HP 333 323 258 183 67
1 HP 434 417 333 239 95
1-1/2 HP 608 577 454 316 104
2 HP 755 707 556 397 162
3 HP 1018 951 762 571 291
5 HP 1620 1508 1172 818 292

Output in GPM at 30 PSI (switch cut-in), by depth to water

HP 80 ft 120 ft 160 ft 200 ft 280 ft 360 ft 440 ft
1/2 HP 10 7 — — — — —
3/4 HP 13 11 9 7 — — —
1 HP 14 13 12 10 7 — —
1-1/2 HP — 14 13 12 11 9 6
2 HP — — 14 14 12 11 9
3 HP — — — — — 14 12
5 HP — — — — — — 14

Output in GPM at 50 PSI (switch cut-out), by depth to water

HP 80 ft 120 ft 160 ft 200 ft 280 ft 360 ft 440 ft
1/2 HP 6 — — — — — —
3/4 HP 11 9 7 — — — —
1 HP 13 11 10 9 — — —
1-1/2 HP 14 13 12 11 10 7 —
2 HP — 14 14 13 11 10 8
3 HP — — — — 14 13 12
5 HP — — — — — 14 14
15 GPM class · 7 builds, 1/2 to 5 HP

15 GPM class — total head in feet

HP 0 GPM (Shut-off) 4 GPM 11 GPM 16 GPM 21 GPM (Max)
1/2 HP 167 171 141 107 61
3/4 HP 252 250 204 152 83
1 HP 336 328 265 191 94
1-1/2 HP 458 445 358 256 119
2 HP 582 558 452 328 165
3 HP 786 753 614 446 221
5 HP 1290 1215 968 677 292

Output in GPM at 30 PSI (switch cut-in), by depth to water, 1/2 HP to 1-1/2 HP

HP 20 ft 40 ft 60 ft 80 ft 100 ft 120 ft 140 ft
1/2 HP 16 14 11 7 — — —
3/4 HP — 18 17 15 13 11 9
1 HP — — — 18 17 15 14
1-1/2 HP — — — — — 18 17

Output in GPM at 50 PSI (switch cut-out), by depth to water, 1/2 HP to 1-1/2 HP

HP 20 ft 40 ft 60 ft 80 ft 100 ft 120 ft 140 ft
1/2 HP 10 — — — — — —
3/4 HP 16 15 13 11 8 — —
1 HP 18 17 16 15 14 12 11
1-1/2 HP — — — 18 17 16 16

Output in GPM at 30 PSI (switch cut-in), by depth to water, 2 HP to 5 HP

HP 320 ft 360 ft 400 ft 440 ft 480 ft 500 ft 550 ft
2 HP 13 12 10 8 — — —
3 HP 17 16 15 14 13 12 11
5 HP — — — 18 18 18 17

Output in GPM at 50 PSI (switch cut-out), by depth to water, 2 HP to 5 HP

HP 320 ft 360 ft 400 ft 440 ft 480 ft 500 ft 550 ft
2 HP 11 10 — — — — —
3 HP 16 15 14 13 12 11 9
5 HP — — 18 18 17 17 16
20 GPM class · 8 builds, 3/4 to 10 HP

20 GPM class — total head in feet (curves end at 29-30 GPM)

HP 0 GPM (Shut-off) 6 GPM 15 GPM 22 GPM 29 GPM
3/4 HP 188 201 172 122 48
1 HP 260 276 236 167 67
1-1/2 HP 375 346 298 218 102
2 HP 450 459 394 287 132
3 HP 600 591 503 372 185
5 HP 975 904 712 503 244
7-1/2 HP 1460 1382 1208 922 494
10 HP 1950 1850 1643 1221 683

Output in GPM at 30 PSI (switch cut-in), by depth to water, 3/4 HP to 2 HP

HP 40 ft 60 ft 80 ft 100 ft 120 ft 140 ft 160 ft
3/4 HP 23 20 17 — — — —
1 HP — 25 24 21 19 16 14
1-1/2 HP — — — 26 25 24 22
2 HP — — — — — 26 25

Output in GPM at 50 PSI (switch cut-out), by depth to water, 3/4 HP to 2 HP

HP 40 ft 60 ft 80 ft 100 ft 120 ft 140 ft 160 ft
3/4 HP 15 — — — — — —
1 HP 23 21 18 16 — — —
1-1/2 HP — 26 25 23 22 20 19
2 HP — — — 26 25 24 22

Output in GPM at 30 PSI (switch cut-in), by depth to water, 3 HP to 10 HP

HP 320 ft 440 ft 550 ft 700 ft 850 ft 1000 ft 1150 ft
3 HP 21 14 — — — — —
5 HP — 25 22 17 — — —
7-1/2 HP — — — 25 22 19 15
10 HP — — — — 26 24 22

Output in GPM at 50 PSI (switch cut-out), by depth to water, 3 HP to 10 HP

HP 320 ft 440 ft 550 ft 700 ft 850 ft 1000 ft 1150 ft
3 HP 19 — — — — — —
5 HP 26 24 20 15 — — —
7-1/2 HP — — 26 24 21 18 14
10 HP — — — — 25 23 21
25 GPM class · 7 builds, 1 to 10 HP

25 GPM class — total head in feet

HP 0 GPM (Shut-off) 7 GPM 17 GPM 26 GPM 34 GPM (Max)
1 HP 222 225 199 144 76
1-1/2 HP 297 304 265 192 107
2 HP 375 372 328 233 112
3 HP 519 521 469 337 164
5 HP 833 831 749 553 306
7-1/2 HP 1281 1250 1117 811 440
10 HP 1642 1618 1444 1049 570

Output in GPM at 30 PSI (switch cut-in), by depth to water

HP 80 ft 120 ft 160 ft 200 ft 280 ft 360 ft 440 ft
1 HP 25 19 — — — — —
1-1/2 HP 30 26 22 16 — — —
2 HP 32 29 26 23 13 — —
3 HP 35 33 31 29 25 20 11
5 HP — — — 35 33 30 28
7-1/2 HP — — — — — 35 33
10 HP — — — — — — 35

Output in GPM at 50 PSI (switch cut-out), by depth to water

HP 80 ft 120 ft 160 ft 200 ft 280 ft 360 ft 440 ft
1 HP 17 — — — — — —
1-1/2 HP 26 21 — — — — —
2 HP 29 26 22 18 — — —
3 HP 33 31 29 27 23 16 —
5 HP — — 35 34 31 29 26
7-1/2 HP — — — — 35 34 32
10 HP — — — — — 35 34

Total head read from the published curves in Franklin’s FPS Residential Submersible Catalog (MF5060), pp. 16, 19, 22 and 25, digitized and rounded down to whole feet, at the plotted flows nearest 20%, 50% and 75% of where the curves end. 0 GPM is Franklin’s printed shut-off. Feet of head = PSI × 2.31. Franklin’s published curves and printed tables differ here: the 15 GPM 1/2 HP curve reads about 11 ft above Franklin’s printed output tables on average and reads 177 ft near zero flow against the printed 167 ft shut-off; the 15 GPM 3/4 HP curve reads about 8 ft above Franklin’s printed output tables on average; the 20 GPM 3/4 HP curve reads 201 ft near zero flow against the printed 188 ft shut-off; the 20 GPM 1 HP curve reads 275 ft near zero flow against the printed 260 ft shut-off; the 20 GPM 1-1/2 HP curve reads 346 ft near zero flow against the printed 375 ft shut-off; the 20 GPM 5 HP curve reads about 88 ft below Franklin’s printed output tables on average. The head table follows the published curve (re-read from Franklin’s vector chart data); the 0 GPM column and the output tables follow the printed figures. Output tables as printed in MF5060, pp. 17-18, 20-21, 23-24 and 26, at the 30 and 50 PSI rows; Franklin rounds them to whole GPM. Drop-pipe friction is not included (manufacturer note). — marks a point Franklin does not print.

The 15, 20 and 25 GPM curves rise a few feet above the printed shut-off at low flow before they fall, so a low-flow column can read slightly above the shut-off.

Builds not tabulated in Franklin’s current catalog: 20FA05S4-PE. Performance for these builds is confirmed on request.

Best operating range: Franklin shades the best-efficiency range on each published curve and prints no figures for it. The curves are in the image gallery.

Before You Buy — The Limits That Decide the Fit
  • Maximum diameter across the cable guard is 3.90 in on all models
  • Discharge: 1-1/4 in NPT
  • Maximum water temperature: 120 °F (49 °C)
  • Fit a Franklin 4 in motor of the same horsepower; the motor and its control are ordered separately
Installation Notes
  • Install in a developed well; undeveloped water carries abrasives that wear the pump.
  • Set the pump at least 5 ft off the bottom of the well and above the well screen or casing perforations, unless cooling flow past the motor is assured.
  • Use positive-sealing check valves only, never swing type: one in-line within 25 ft of the pump below drawdown, and one every 200 ft of setting beyond 200 ft.

From the Franklin 4 in and 6 in submersible pump owner’s manual (106467101).

For engineering-led sizing and selection support or a factory submittal, email sales@watermainsupply.com or call 1-888.510.4036.
© Watermain Supply — A division of E4 Industrial LLC
Data Sheet
4 in Tri-Seal Section, FPS Residential Submersible Catalog (MF5060)FPS Tri-Seal Submersible Pumps Brochure (MF2135)4 in and 6 in Submersible Pump Owner’s Manual (106467101)
Videos

Product videos are being added to this listing. For a walkthrough in the meantime, email sales@watermainsupply.com.

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