Seaflo 1" Vented Loop Anti-Siphon Valve 25mm Marine Boat Toilet Bilge SFVL-02
VL02
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Seaflo 1" Vented Loop (SFVL-02)
Essential Anti-Siphon Protection for Marine Plumbing
The Seaflo SFVL-02 Vented Loop is a critical safety component for any marine vessel where plumbing systems—such as toilets or bilge pumps—are installed below the static or heeled waterline. This anti-siphon valve prevents water from siphoning back into the boat, protecting your vessel from potential flooding and system damage.
Key Features
- ✔ Anti-Siphon Design: Breaks vacuum to prevent water backflow.
- ✔ Internal Valve: Integrated venting requires no external hoses.
- ✔ Corrosion-Proof: Molded from tough, marine-grade plastic.
- ✔ Direct Fit: Compatible with 1" (25mm) ID marine hoses.
Technical Specs
| Model: | SFVL-02 / VL02 |
| Hose Connection: | 1" (25mm) |
| Height: | 190.2 mm |
| Width: | 123.1 mm |
| Material: | Tough UV-Stabilized Plastic |
Compatibility / Fitment Guide
| System Application | Requirement | Notes |
|---|---|---|
| Marine Head / Toilet | Inlet & Discharge | Essential if installed below waterline. |
| Bilge Pump Lines | Discharge Line | Prevents water backflow into bilge. |
| Manual & Electric Toilets | 25mm ID Hose | Interchangeable with standard marine brands. |
OEM Cross Reference
| Jabsco Reference | 29015-0020 (1") |
| Johnson Pump Reference | 81-47237-02 |
| Seaflo MPN | SFVL-02 |
Questions & Answers
Is this a genuine original part?
This is a premium quality Seaflo brand replacement part, manufactured to meet or exceed original equipment standards for marine plumbing performance.
How do I know if it is compatible?
We recommend checking your hose inner diameter (ID). This unit is designed specifically for 1-inch (25mm) ID hoses. If your original part number matches Jabsco 29015-0020, this is a direct replacement.
Does this require an external vent hose?
No. The SFVL-02 model features an internal one-way duckbill valve that allows air in to break the siphon without allowing water to leak out, removing the need for a separate vent line to the hull exterior.
Note: Please verify your hose diameter and original part number against the references above before purchasing. Available at 4boats.co.uk.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
