Franklin Electric Centrifugal Self Priming Frame Mount FBSTF
Franklin Electric Centrifugal Self Priming Frame Mount FBSTF for Irrigation, Construction and Municipal Applications
Franklin Electric Centrifugal Self Priming Frame Mount FBSTF is a heavy-duty frame mount self-priming centrifugal pump built for irrigation, construction, mining, municipal, and light industrial water transfer. Available through Ken’s Distributing Company at Kendisco, the FBSTF handles flow rates up to 250 GPM and heads up to 80 feet, with a maximum working pressure of 120 PSI, making it one of the most versatile frame mount self-priming pumps in the Franklin Electric surface pump lineup.
The rugged cast iron volute includes tapped openings for priming, venting, and draining, which simplifies installation and ongoing maintenance. The semi-open, non-clogging cast iron impeller is designed with a blind hole to protect the shaft from liquid intrusion and corrosion. This makes the FBSTF well suited for applications involving dirty water, fertilizer solutions, or other liquids that would damage a standard closed impeller.
The one-piece high-strength steel shaft and heavy-duty bearing frame support both belt drive and direct drive configurations, giving you flexibility in how the pump is powered. Whether you are running the FBSTF from an electric motor, a PTO belt drive, or a direct coupled drive system, the bearing frame and keyed stainless shaft are built to handle the load reliably. Ken’s Distributing Company at Kendisco stocks the FBSTF series along with genuine Franklin Electric replacement parts for all models.
Key Features of the Franklin Electric FBSTF Frame Mount Self-Priming Pump
- Rugged cast iron volute with tapped openings for priming, venting, and draining
- Semi-open cast iron non-clogging impeller with blind hole for shaft protection
- Standard carbon and ceramic seal faces with FKM elastomers and 300-series stainless steel components
- One-piece high-strength steel shaft for easy mounting and reliable performance
- Heavy-duty bearing frame with sealed bearings and keyed stainless shaft
- Compatible with both belt drive and direct drive systems
- Flow rates up to 250 GPM and heads up to 80 feet
- Maximum working pressure of 120 PSI
- Handles liquid temperatures up to 200 degrees F
- Available in 1-1/4 inch, 2 inch, and 3 inch NPT suction and discharge connections
- Clockwise rotation viewed from the motor end
Technical Specifications
| Specification | Value |
|---|---|
| Maximum Flow Rate | 250 GPM |
| Maximum Head | 80 feet |
| Maximum Working Pressure | 120 PSI |
| Maximum Liquid Temperature | 200 degrees F |
| Pipe Connections | NPT |
| Connection Sizes Available | 1-1/4″ x 1-1/4″, 2″ x 2″, 3″ x 3″ (Suction x Discharge) |
| Rotation | Clockwise viewed from motor end |
| Impeller Type | Semi-open cast iron, non-clogging |
| Volute Material | Cast iron, ASTM-A48 CL30 |
| Seal Type | Carbon/ceramic faces, FKM elastomers, 300-series stainless steel |
| Shaft Material | One-piece high-strength steel with keyed stainless shaft |
| Drive Compatibility | Belt drive and direct drive |
Applications
- Agricultural and commercial irrigation systems
- Construction site dewatering
- Mining water transfer
- Municipal water supply and transfer
- Light industrial liquid handling
- Belt drive and PTO-powered water transfer systems
- Dirty water and fertilizer solution pumping
Franklin Electric FBSTF EXPLODED PARTS
Franklin Electric FBSTF MATERIALS AND PARTS
| Fig. No. | Part Description | FBSTF-1 | FBSTF-2 | Part No. | FBSTF-3 | FBSTF-5 | Materials of Construction |
|---|---|---|---|---|---|---|---|
| 1 | FBSTF Pump Case | 305461001 | 305461002 | 305461015 | Cast Iron, ASTM-A48 CL30 | ||
| 2 | FBSTF Impeller | 305461005 | 305461007 | 305461016 | 305461017 | Cast Iron, ASTM-A48 CL30 | |
| 3 | FBSTF Seal Plate | N/A | N/A | 305461018 | 305461019 | Cast Iron, ASTM-A48 CL30 | |
| 5 | FBSTF Shaft | N/A | N/A | 305453049 | C1018120 | ||
| 5 | FBSTF Shaft and Bearing Assy. | 305453011 | N/A | N/A | Misc. | ||
| 12 | FBSTF Sleeve | N/A | N/A | 305453051 | 304 Stainless Steel | ||
| 16 | FBSTF Ball Bearing (2-pack) | N/A | N/A | 305463180 | Misc. | ||
| 26 | FBSTF Lip Seal | N/A | N/A | 305463139 | Nitrile (Buna) | ||
| 30 | FBSTF Retaining Ring | 305463027 | 305463181 | Steel | |||
| 35 | FBSTF Shaft Key | 305463028 | 305453028 | 301 Stainless Steel | |||
| 79 | FBSTF Transmission Head | 305461021 | 305461022 | 305453048 | Cast Iron, ASTM-A48 CL30 | ||
| 90 | FBSTF Mechanical Shaft Seal | 305463029 | 305463193 | Carbon/Ceramic/Buna/316SS | |||
| 100 | FBSTF Case Gasket | 305463133 | 305463194 | 305463195 | Nitrile | ||
| 500 | FBSTF Pipe Plug NPT (3-pack) | 305463050 | CAD Plated Steel | ||||
| 510 | FBSTF Water Slinger | 305453013 | 305453050 | N/A | 300 Series Stainless | ||
| 530A | FBSTF Lockwasher (8-pack) | 305463032 | Zinc Plated Steel | ||||
| 530B | FBSTF Nut, Hex (8-pack) | 305463033 | Zinc Plated Steel | ||||
| 531 | FBSTF Bolt/Threaded Stud (4-pack) | 305463053 | 305463196 | Zinc Plated Steel/18-8 SS | |||
Franklin Electric FBSTF ORDERING INFORMATION
| Model | HP | Suction/Discharge | Order No. | Wt. [lbs] | ||
|---|---|---|---|---|---|---|
| FBSTF-1 | CI | PE | 1 | 1-1/4″ x 1-1/4″ | 90253001 | 18 |
| FBSTF-2 | 2 | 2″ x 2″ | 90253002 | |||
| FBSTF-3 | 3 | 2″ x 2″ | 90253003 | |||
| FBSTF-5 | 5 | 3″ x 3″ | 90253004 | |||
Franklin Electric FBSTF DIMENSIONS
| Model | Suction [NPT] | Discharge [NPT] | Keyway F | H | J | K | L | M | N | P | Q | R | S | T | U |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| FBSTF-1 | 1-1/4 | 1-1/4 | .19 x .19 x .75 | 4.00 | 2.00 | 4.25 | 7.50 | 3.20 | 10.50 | 8.10 | 6.40 | – | 10.30 | 4.50 | 1.36 |
| FBSTF-2 | 2 | 2 | 4.25 | 2.13 | 4.00 | 8.50 | 3.20 | 11.50 | 8.90 | 6.70 | – | 10.60 | 4.50 | 1.36 | |
| FBSTF-3 | 2 | 2 | 4.25 | 2.13 | 4.00 | 8.50 | 3.20 | 11.40 | 8.40 | 6.90 | 2.00 | 12.10 | 4.50 | 1.74 | |
| FBSTF-5 | 3 | 3 | 3.62 | 2.00 | 4.00 | 9.30 | 4.60 | 13.40 | 9.80 | 8.90 | 2.00 | 14.10 | 4.50 | 1.74 |
Franklin Electric FBSTF PERFORMANCE curve
Frequently Asked Questions
What is the Franklin Electric Centrifugal Self Priming Frame Mount FBSTF used for?
The Franklin Electric Centrifugal Self Priming Frame Mount FBSTF is used for irrigation, construction dewatering, mining, municipal water transfer, and light industrial liquid handling. Its frame mount design and compatibility with belt drive and direct drive systems make it a practical choice for applications where a close-coupled motor-direct pump is not the right fit, including PTO-driven setups on tractors and equipment.
What is the difference between a frame mount and a close-coupled pump?
A frame mount pump like the FBSTF has a separate bearing frame that supports the shaft and allows the pump to be driven by a belt, direct coupling, or other drive method without being permanently attached to a specific motor. A close-coupled pump like the FBSE or FBSEF is mounted directly to a motor using a C-face or square flange adapter. Frame mount pumps offer more flexibility in drive options and are easier to adapt to existing equipment.
What drive systems are compatible with the FBSTF?
The FBSTF bearing frame supports both belt drive and direct drive configurations. The one-piece high-strength steel shaft with a keyed stainless steel design allows the pump to be connected to electric motors, tractor PTO systems via belt drive, or direct coupled drive assemblies. This makes the FBSTF one of the most flexible self-priming frame mount pumps available through Kendisco and Ken’s Distributing Company.
What connection sizes are available on the FBSTF?
The FBSTF is available in three NPT connection sizes: 1-1/4 inch suction by 1-1/4 inch discharge for smaller flow applications, 2 inch suction by 2 inch discharge for mid-range flow, and 3 inch suction by 3 inch discharge for high-volume applications up to 250 GPM. Select the connection size that matches your piping system and flow requirements.
What liquids can the FBSTF handle?
The semi-open, non-clogging cast iron impeller on the FBSTF is designed to handle dirty water, fertilizer solutions, salt water, and other liquids that carry light solids or contaminants. The blind-hole tapped impeller design prevents liquid from reaching the shaft, protecting against corrosion and extending the service life of the pump in demanding environments.
What is the maximum working pressure for the FBSTF?
The FBSTF has a maximum working pressure of 120 PSI, which is significantly higher than the 75 PSI rating of the close-coupled FBSE and FBSEF series. This makes the FBSTF a better choice for applications that require higher discharge pressures, such as certain irrigation systems, municipal distribution lines, or industrial transfer applications where pressure requirements exceed what the close-coupled models can deliver.
Where can I find replacement parts for the FBSTF at Kendisco?
Ken’s Distributing Company at Kendisco carries genuine Franklin Electric replacement parts for the FBSTF series, including pump cases, impellers, mechanical seals, and hardware organized by model number. Contact Kendisco directly for the complete FBSTF parts list or to confirm part availability for your specific model before ordering.
Why Buy the Franklin Electric FBSTF from Kendisco
Ken’s Distributing Company is a trusted Franklin Electric distributor with hands-on knowledge of the full FBSTF frame mount self-priming pump lineup. Through Kendisco, you get access to the complete FBSTF series across all connection sizes and drive configurations, along with genuine OEM replacement parts and the product support that Ken’s Distributing Company is known for.
If you are comparing the FBSTF to a close-coupled FBSE or FBSEF, need help sizing the right model for your flow and pressure requirements, or are looking for a specific replacement part by figure number, the team at Ken’s Distributing Company is ready to help. Order the Franklin Electric Centrifugal Self Priming Frame Mount FBSTF through Kendisco and get a pump that is built to perform in the most demanding field conditions.