Franklin Electric FTT Series Frame Mount Self-Priming Pump
Franklin Electric FTT Series Frame Mount Self-Priming Pump models FTT-20, FTT-30 and FTT-40 offer 2-, 3- and 4-inch self-priming water-transfer options for irrigation, construction dewatering, water trucks and other demanding jobs. The series combines cast iron construction, solids-handling impellers and a frame-mounted drive arrangement. Ken’s Distributing Company can quote either a complete FTT pump or model-matched replacement parts, including impellers, mechanical seals, wear rings and flapper valves.
Ordering a pump? Compare the three FTT models by Franklin Electric order number, connection size and solids passage below. Repairing an existing FTT? Use the exploded diagram and complete parts breakdown to identify the part by model and reference number. For the quickest quote, provide your FTT model, required GPM and head, or the repair part number.
FTT-20, FTT-30 and FTT-40 Complete Pumps: Models and Order Numbers
These are bare frame-mount pump configurations. Drive motor, belt, coupling and other installation components should be specified for the application. The listed solids sizes are maximum spherical passage dimensions, not a promise of abrasion resistance or performance at any operating point.
| Pump model | Franklin Electric item number | Discharge × suction | Product weight | Max. spherical solid | Nominal impeller diameter |
|---|---|---|---|---|---|
| FTT-20 | 90240002 | 2 × 2 in. NPT | 129 lb | 1-1/8 in. | 6.28 in. |
| FTT-30 | 90240003 | 3 × 3 in. NPT | 190 lb | 2 in. | 6.97 in. |
| FTT-40 | 90240004 | 4 × 4 in. NPT | 420 lb | 3 in. | 8.72 in. |
Request pump pricing: Send Ken’s Distributing Company your pump model and job details. Include required flow in GPM, total dynamic head, suction conditions, drive type and delivery location so the team can confirm a suitable configuration, price and availability.
Franklin Electric FTT Series Frame Mount Self-Priming Pump Specifications
| Specification | FTT Series details |
|---|---|
| Pump design | Single-stage, frame-mounted, self-priming centrifugal pump |
| Available models | FTT-20, FTT-30 and FTT-40 |
| Series capacity | Up to 740 GPM, depending on model, speed and system head |
| Series maximum head | Up to 140 ft, depending on pump and operating speed |
| Maximum working pressure | 75 PSI (pump working-pressure limit) |
| Maximum liquid temperature | 212°F (100°C) |
| Discharge and suction | 2 × 2, 3 × 3 or 4 × 4 in., threaded FNPT |
| Impeller | Enclosed, two-vane cast iron, suitable for manufacturer-listed spherical-solids passage |
| Volute | Reinforced cast iron; clean-out cover; priming, venting and draining openings |
| Shaft and bearings | 316 stainless steel pump shaft; heavy-duty bearing frame with sealed bearings |
| Seal design | Mechanical seal with carbon/ceramic faces, FKM elastomers and stainless components |
| Drive options | Belt drive or properly aligned direct drive; drive components must be selected separately |
| Rotation | Clockwise facing the shaft / motor end |
| Mounting | Horizontal |
| Priming | Requires initial casing fill before startup; integral suction check-valve design |
The 740 GPM flow, 140 ft head and 75 PSI pressure figures describe different series limits. They should not be interpreted as performance that any one model delivers simultaneously. Select using the performance curve at the actual pump speed and duty point.
Choose the FTT Pump for Your Application
The FTT-20 covers the 2-inch piping class, the FTT-30 the 3-inch class, and the FTT-40 the 4-inch class. A larger connection does not automatically mean a better match. The required duty point, drive speed, liquid characteristics and piping losses determine the right choice.
- Irrigation and farm water transfer: Select from the pond or reservoir level, required field flow and discharge head.
- Construction dewatering: Compare suction lift, sediment conditions and peak water removal needs before choosing a size.
- Water truck filling and dust control: Confirm discharge hose size, target tank-filling time and suitable belt or direct drive.
- Municipal and industrial water handling: Review the performance curves and the pump material ratings for the specific service.
Franklin Electric FTT Pump Performance Curves
The following site-hosted curves are retained from the existing product description. Choose the correct model curve for your actual RPM, expected suction conditions, required flow and total dynamic head.
FTT-20 Performance Curve
FTT-30 Performance Curve
FTT-40 Performance Curve
FTT Replacement Parts for the FTT-20, FTT-30 and FTT-40
Ken’s Distributing Company also supplies pump repair and replacement parts by inquiry. Use the exploded drawing to identify the reference number, then cross-check the model-specific item number in the complete table. This is important for impellers, wear rings, check valves, seals, shafts, gaskets and bearings because many parts differ across the three pump sizes.
FTT Exploded Parts Diagram
| Figure | Replacement part | FTT-20 part no. | FTT-30 part no. | FTT-40 part no. | Material / notes |
|---|---|---|---|---|---|
| 1 | Pump Case | 305454001 | 305454002 | 305454003 | Cast iron, ASTM-A48 CL30 |
| 2 | Impeller | 305454004 | 305454005 | 305454006 | Cast iron, ASTM-A48 CL30 |
| 3 | Seal Plate | 305454007 | 305454008 | 305454009 | Cast iron, ASTM-A48 CL30 |
| 4 | Wear Ring | 305454010 | 305454011 | 305454012 | Ductile iron |
| 5 | Shaft | 305454013 | 305454014 | 305454015 | 7M-212SST |
| 16 | Ball Bearing* | 305463034 | 305463035 | 305463036 | Misc. |
| 35 | Shaft Key | 305454016 | 305454016 | 305454017 | 1018 CRS |
| 38 | Bearing Nut | 305463037 | 305463038 | 305463039 | 300 series stainless steel |
| 39 | Bearing Lock Washer | 305463040 | 305463041 | 305463042 | Zinc-plated steel |
| 72 | Check Valve | 305454018 | 305454019 | 305454020 | Cast iron, ASTM-A48 CL30 |
| 73A | Top Weight, Check Valve | 305454021 | 305454022 | 305454023 | Cast iron, ASTM-A48 CL30 |
| 73B | Bottom Weight, Check Valve | 305454024 | 305454025 | 305454025 | Cast iron, ASTM-A48 CL30 |
| 75 | T-Handle Fasteners | 305454026 | Not listed | 305454027 | Cast iron, ASTM-A48 CL30 |
| 78 | Clean-Out Cover | 305454028 | 305454029 | 305454030 | Cast iron, ASTM-A48 CL30 |
| 79 | Transmission Head | 305454031 | 305454032 | 305454033 | Cast iron, ASTM-A48 CL30 |
| 80 | Bearing Cover | 305454034 | 305454035 | 305454036 | Cast iron, ASTM-A48 CL30 |
| 81 | Seal Cover | 305454037 | 305454038 | 305454039 | Cast iron, ASTM-A48 CL30 |
| 90 | Mechanical Shaft Seal | 305240359 | 305240359 | 305240362 | Carbon/ceramic/FKM/stainless steel |
| 100A | Case Gasket | 305454040 | 305454041 | 305454042 | Nitrile |
| 100B | Flapper Valve | 305454043 | 305454044 | 305454045 | Neoprene |
| 100C | O-ring, Volute | 305463045 | 305463046 | 305463047 | Nitrile |
| 500A | Pipe Plug, NPT (3 pack) | 305463048 | 305463049 | 305463049 | CAD-plated steel |
| 500B | Pipe Plug, 3/4″ (3 pack) | 305463050 | 305463050 | 305463050 | CAD-plated steel |
| 500C | Pipe Plug, 1/4″ (4 pack) | 305463020 | 305463020 | n/a | CAD-plated steel |
| 500D | Pipe Plug, 1/8″ (3 pack) | 305463051 | 305463051 | n/a | CAD-plated steel |
| 510 | Impeller Hex Bolt | 305463052 | 305463053 | 305463054 | 300 series stainless steel |
| 520 | Impeller Washer | 305453006 | 305454046 | 305454047 | Aluminum plate |
| 530A | Washer, T-handle | 305463055 | 305463055 | n/a | Zinc-plated steel |
| 530B | Flapper Bolt | 305463056 | 305463057 | 305463058 | Zinc-plated steel |
| 530C | Hex Nut (8/6 pack) | 305463033 | 305463059 | 305463059 | Zinc-plated steel |
| 530D | Lock Washer, 3/8″ (8/6 pack) | 305463032 | 305463060 | 305463060 | Zinc-plated steel |
| 530E | Nut, Flapper | 305463061 | 305463061 | 305463062 | Zinc-plated steel |
| 530F | Washer, Flapper | 305463063 | 305463063 | n/a | Zinc-plated steel |
| 530G | Valve Hex Cap Screw (4 pack or 8 pack) | 305463064 | 305463064 | 305463065 | Zinc-plated steel |
| 530H | Washer, Bearing Cover | 305463066 | 305463066 | 305463067 | Zinc-plated steel |
| 530J | Bolt, Bearing Cover | 305463068 | 305463068 | 305463069 | Zinc-plated steel |
| 531A | Threaded Stud, Cover (6 pack) | 305463070 | 305463071 | 305463072 | Zinc-plated steel |
| 531B | Threaded Stud, Transmission (6 pack) | 305463031 | 305463073 | 305463073 | Zinc-plated steel |
| 532 | Set Screw | 305463074 | 305463074 | 305463075 | Zinc-plated steel |
Mechanical-seal part-number check: The supplied parts list identifies 305240359 for FTT-20/FTT-30 and 305240362 for FTT-40 (figure 90). A published Franklin Electric FTT owner’s manual instead identifies 305463043 and 305463044 for that figure. These numbers are not confirmed interchangeable. Please send the pump nameplate, any original seal number and required quantity for a fitment check before ordering.
Repair-part quotes: Specify FTT-20, FTT-30 or FTT-40, the figure number from the exploded diagram, and the part number. If the old part cannot be identified, provide photos of the nameplate and component. Ken’s Distributing Company can confirm price and availability for the requested parts.
FTT Pump Dimensions and Mounting Details
The dimensions are reproduced from the supplied technical table for the three FTT models. Use the linked drawing to check shaft, keyway and mounting clearances before ordering a replacement pump, particularly if the existing installation has fixed pipework.
| Model | Group | Suction × discharge (NPT) | A | B | C | D | E | F | H | J | K | L | M | N | P | Q | R | S | T | U | Shaft diameter (in.) | Keyway (in.) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| FTT-20 | 801 | 2 x 2 | 21.25 | 3.00 | 3.59 | .44 | 4.00 | 5.00 | 4.78 | 5.75 | 7.25 | 15.50 | 7.42 | 4.75 | 3.25 | 4.25 | 8.50 | 5.38 | 5.38 | 10.75 | 1.250 | 1/4 x 1/4 |
| FTT-30 | 802 | 3 x 3 | 24.71 | 3.00 | 3.42 | .56 | 4.75 | 6.00 | 6.51 | 6.91 | 10.73 | 20.13 | 9.45 | 5.56 | -3.75 | 5.38 | 10.75 | 6.38 | 6.38 | 13.31 | 1.250 | 1/4 x 1/4 |
| FTT-40 | 803 | 4 x 4 | 30.06 | 3.00 | 3.57 | .56 | 7.25 | 9.00 | 6.64 | 9.00 | 14.00 | 26.50 | 11.76 | 7.00 | -4.76 | 7.75 | 15.50 | 8.88 | 8.88 | 17.76 | 1.625 | 3/8 x 3/8 |
The supplied dimension table contains negative-looking P values (-3.75 for FTT-30 and -4.76 for FTT-40). These are retained as supplied, not independently verified. Confirm the P dimension against the manufacturer drawing before using it for installation or fabrication.
Self-Priming, Solids Handling and Maintenance
FTT pumps use a self-priming centrifugal design with a clean-out access cover and a built-in suction check valve. The initial pump housing still needs to be filled before startup. After shutdown, inspect the valve and suction piping if the unit loses prime.
- Check valve and flapper: A worn or obstructed check valve can cause slow priming and may call for the model-specific flapper, weight, valve or gasket.
- Impeller and wear ring: Reduced flow can result from excessive wear or clearance. The FTT parts breakdown lists a replaceable wear ring by model.
- Mechanical seal: Leaks at the shaft can indicate seal wear. Confirm the original seal number because the source list and published owner’s manual disagree.
- Bearing frame: Check for unusual noise, vibration, shaft play and alignment issues before ordering bearings or a replacement shaft.
- Setup: Keep suction piping airtight, choose suitable speed and drive components, and do not run the pump dry.
FTT Versus FMIT Frame Mount Self-Priming Pumps
Both are frame-mounted self-priming centrifugal families for irrigation and water transfer. Their key difference is the intended solids-handling method and hydraulic setup. Compare the actual curves rather than selecting on the series-wide maximum alone.
| Factor | FTT Series | FMIT Series |
|---|---|---|
| Impeller design | Two-vane enclosed cast iron | Semi-open cast iron |
| Wear components | Replaceable wear ring in FTT parts list | Replaceable wear plate on FMIT |
| Primary selection consideration | Spherical-solid passage and higher series-wide flow ceiling | Applications involving mud, sand and silt within the rated duty |
| Drive format | Frame-mounted, belt or direct drive | Frame-mounted, belt or direct drive |
| How to choose | Verify flow, head, solid size and selected RPM | Verify flow, head, solids conditions and selected RPM |
Compare the Franklin Electric FMIT frame-mount self-priming pump if your application involves abrasive solids or calls for the FMIT hydraulic design. The two pump series should not be assumed to share service parts.
Frequently Asked Questions About FTT Pumps and Repair Parts
What are the FTT-20, FTT-30 and FTT-40 pump order numbers?
FTT-20 is 90240002 with 2-inch ports, FTT-30 is 90240003 with 3-inch ports, and FTT-40 is 90240004 with 4-inch ports. Select using duty-point performance and piping requirements.
Is the FTT Series self-priming?
Yes, after the initial casing fill. The suction check valve helps retain priming liquid for subsequent starts. Air leaks, excessive suction lift or a worn flapper can prevent proper priming.
Can I replace the FTT impeller without buying a complete pump?
Yes, the FTT exploded-parts list identifies model-specific impellers: 305454004 for FTT-20, 305454005 for FTT-30 and 305454006 for FTT-40. Confirm the pump model before ordering.
Which FTT mechanical seal fits my pump?
The supplied list and a published Franklin Electric manual disagree on figure 90 seal part numbers. Send Ken’s Distributing Company the pump model, existing seal number or photo so the correct part can be checked.
What is the difference between a wear ring and a wear plate?
The FTT parts diagram names a replaceable wear ring (figure 4); the FMIT is described with a replaceable wear plate. When ordering FTT parts, use the model-specific wear-ring number rather than assuming FMIT parts fit.
Does the FTT-20/40 name mean 20 to 40 GPM?
No. It refers to the FTT-20, FTT-30 and FTT-40 models with 2-, 3- and 4-inch ports. The series is marketed for much higher flow, up to 740 GPM at the appropriate operating condition.
Do the FTT pumps include a drive motor?
These are frame-mount centrifugal pump ends designed for an appropriately engineered belt or direct drive. Confirm the required drive hardware, speed, alignment and motor/engine sizing when requesting a quote.
Can Ken’s Distributing Company quote both a pump and repair parts?
Yes. Send the full FTT model and pump item number for a complete unit, or the replacement part number and figure reference for a parts quote. Include your required delivery location and quantity.
Related Franklin Electric Pump Options and Parts
- Browse Franklin Electric pump replacement parts if you need service components for other pump families.
- See the FBSTF frame-mount self-priming pump for a different self-priming configuration.
- Review water truck pump options when planning filling, transfer or dust-control service.
Ready to request pricing? Ken’s Distributing Company supplies complete Franklin Electric FTT pumps and repair/replacement parts by quote. For pumps, provide model, duty point, RPM and drive requirements. For parts, provide the FTT model and exact part number. Call 303-699-7845 for assistance.
Send us your model number and we will confirm fit, price, and availability.