Speed sensor valve (screw-on version)
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Technical specifications
Technical specifications
| Max power consumption | 0 |
| Typical power consumption | 0 |
| Compatible brand | B&G |
| Compatible models | B&G paddlewheel speed sensors, B&G Hydra, Hercules, H3000, H5000 navigation systems |
| Compatible sensors | B&G Speed Sensors |
| Direct replacement | Yes |
| Installation considerations | Check sensor model compatibility before installation. |
| Installation type | Screw-in |
| Maintenance level | Low |
| Material | Unknown |
| O-ring material | Unknown |
| Part type | Spare Part |
| Product type | Speed Sensor Valve |
| Product weight | 0.5 |
| Replacement Part | Yes |
| Self-closing valve | Yes |
Detailed description
Detailed description
The speed sensor valve (screw version) by B&G (part number SEN-INSRT-SP2) is a marine technical spare part, specifically designed for through-hull paddlewheel speed sensors. Made from high-strength, corrosion-resistant marine plastics, this valve integrates directly inside standard B&G through-hull housings, whether they are plastic (flush-mount or flanged) or bronze. Its threaded insert screw-fastening system ensures firm retention and resistance to vibrations, guaranteeing the watertight integrity of the hull.
Safety and afloat maintenance
The primary function of the B&G speed sensor valve is to act as an automatic shutoff valve. Paddlewheel sensors are particularly exposed to marine fouling that distorts speed data, requiring regular cleaning. When removing the sensor, this valve closes instantly to block water pressure and minimize water ingress into the sailboat’s bilge. Unlike basic entry-level through-hulls that demand extremely fast and risky handling during probe removal, this component allows crews to perform safe sensor maintenance while the boat remains afloat.
Compatibility and integration in the B&G ecosystem
This model serves as a central element for maintaining high-performance navigation instrument systems. It is fully compatible with top-tier B&G navigation systems such as the H5000, H3000, and WTP3 series, as well as legacy H2000 systems. To ensure total watertightness during prolonged storage or when the sensor is absent, this valve is designed to work in synergy with the B&G obturator plug (part number SEN-PLUG-SP2). Once the sensor is removed, the plug inserts directly through the valve, providing a permanent blocking solution far more reliable than temporary substitutes. The weight of the packaged assembly is 0.5 kg.
Expert opinion
Expert opinion
Pol CONIN
Responsable digital
« Un verrouillage mécanique fiable pour la maintenance à flot »
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