SEAFLO 51F009 Straight Pump Fitting 1/2in FNPT x 1/2in FNPT
51F009
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SEAFLO Straight Pump Fitting 51F009
1/2in FNPT x 1/2in FNPT | POM and polypropylene
A straight threaded adapter for compatible SEAFLO water-pressure systems. Manufacturer configuration data identifies 51F009 as a 1/2-inch FNPT to 1/2-inch FNPT fitting manufactured from POM and polypropylene.
Key Features
- Straight configuration: Keeps the plumbing run in line with the pump port.
- Matched thread size: 1/2in FNPT at both ends.
- Engineering plastics: POM and PP construction.
- Water-pressure-system accessory: For compatible SEAFLO installations.
- Serviceable connection: Enables a removable threaded plumbing joint.
Technical Specs
| Connection A | 1/2in FNPT |
| Connection B | 1/2in FNPT |
| Configuration | Straight |
| Fitting description | HSE/barb straight fitting in SEAFLO catalogue terminology |
| Material | POM and PP |
| Quantity | 1 |
| 4Boats SKU | 51F009 |
Compatibility / Fitment Guide
Fit by thread, not brand name alone: both the pump and adjoining fitting must accept the specified 1/2in female NPT interface and provide sufficient clearance for the straight body.
| Suitable | Compatible SEAFLO water-pressure systems and other equipment only where the port thread and sealing method are confirmed as 1/2in NPT. |
| Do not force | BSP, metric, straight-thread/O-ring or quick-connect ports can look similar but are not interchangeable with tapered NPT threads. |
Part Number Cross Reference
| SEAFLO | 51F009 |
| Short catalogue form | 51F09 |
| 4Boats SKU | 51F009 |
Frequently Asked Questions
Is one end male?
Manufacturer configuration data lists this item as 1/2in FNPT x 1/2in FNPT. Check the pictured part and mating ports before installation.
Can it connect to BSP threads?
No direct compatibility should be assumed; NPT and BSP have different thread geometry.
What material is it made from?
POM and polypropylene.
Should PTFE tape be used?
Use only the sealant method approved for the pump, water type and plastic threads; excessive tape or torque can split a plastic port.
Hand-start both threads to prevent cross-threading. Support connected pipework, avoid excessive torque and pressure-test the joint before returning the system to service.
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