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Seaflo 3/4" (19mm) Marine Vented Loop Anti-Siphon Valve Boat Plumbing VL01
Seaflo 3/4" (19mm) Marine Vented Loop Anti-Siphon Valve Boat Plumbing VL01
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Seaflo Vented Loop 3/4" (19mm) - VL01
Professional Grade Anti-Siphon Protection
The Seaflo VL01 Vented Loop is a critical safety component for any marine vessel where plumbing systems are installed below the static or heeled waterline. This anti-siphon valve prevents water from accidentally siphoning back into the boat, which can lead to flooding or sinking. Engineered specifically for marine environments, it features an internal one-way valve that allows air into the line to break the vacuum without the need for external venting hoses.
Key Features
- ✔ Self-Venting: Internal duckbill valve eliminates external vent lines.
- ✔ Corrosion Proof: Molded in high-strength, UV-stabilized plastic.
- ✔ High Capacity: Designed for 19mm (3/4") ID marine hoses.
- ✔ Easy Maintenance: Removable cap for quick valve cleaning.
Technical Specs
| SKU / MPN: | VL01 / SFVL-01 |
| Hose Connection: | 3/4" (19mm) ID |
| Material: | Polypropylene / Plastic |
| Valve Type: | One-way Anti-Siphon |
| Application: | Inlet & Discharge Lines |
Compatibility / Fitment Guide
| Application Type | Standard Hose Size | Recommended Height |
|---|---|---|
| Marine Toilets (Intake) | 3/4" (19mm) | Min. 200mm above WL |
| Bilge Pump Discharge | 3/4" (19mm) | At highest point of loop |
| Engine Cooling Systems | 3/4" (19mm) | System Dependent |
OEM Cross Reference
| Seaflo | VL01 / SFVL-01 |
| Jabsco Equivalent | 29015-0000 (3/4") |
| Groco Equivalent | HV-750 (Functional match) |
Questions & Answers
Is this a genuine original part?
This is a genuine Seaflo manufactured part, designed to the highest marine standards for anti-siphon safety.
How do I know if it is compatible?
Measure the inside diameter (ID) of your hose. If it is 19mm (3/4"), this part is a direct fit. It is universally compatible with all Seaflo, Jabsco, and TMC toilets using standard 3/4" intake lines.
Where should this be installed?
It must be installed at the highest point of the plumbing loop, at least 200mm (8 inches) above the highest possible waterline (static or heeled) to function correctly.
Note: Always use marine-grade stainless steel hose clamps (two per side recommended) to secure connections to the VL01. Browse 4boats.co.uk for all your marine plumbing essentials.
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