Trudesign 50 mm thru-hull

Tru-Design BSP Grooved Thru-Hull | Certified Composite Marine Skin Fitting

Upgrade your vessel’s plumbing system with the ultimate in safety, reliability, and performance. The Tru-Design BSP Grooved Thru-Hull represents a new generation of marine fittings, engineered to eliminate the timeless problems of corrosion, electrolysis, and material degradation associated with traditional metal thru-hulls. Designed for discerning boat owners and professional builders, this fitting provides long-term peace of mind for all below and above-waterline connections.

Manufactured from an advanced, high-strength composite material, these Thru-hulls are completely immune to the corrosive effects of saltwater and are not susceptible to the electrical currents that cause electrolysis in metallic fittings. This ensures structural integrity for the life of your vessel, preventing catastrophic failures and costly repairs. Its lightweight nature also contributes to reducing overall vessel weight without compromising on strength or durability.

Key Benefits:

* Unparalleled Durability: Enjoy a maintenance-free solution that will never corrode, rust, or seize. The high-impact resistant construction withstands harsh marine environments, providing a fit-and-forget installation.
* Certified Marine Safety: Fully compliant with the highest international standards, including ISO 9093-2 and certified by the IMCI and Bureau Veritas. This guarantees that the fitting meets rigorous requirements for strength, design, and performance in critical below-the-waterline applications.
* Superior Watertight Seal: The innovative grooved outer flange is specifically designed to create multiple pockets for marine-grade sealant. This feature ensures a significantly stronger and more reliable bond to the hull, preventing leaks and providing a robust, watertight installation.
* Complete System Compatibility: Designed to integrate seamlessly with Tru-Design Ball Valves and other system components. The universal BSP thread ensures compatibility with a wide range of marine plumbing equipment, making it ideal for both new builds and refits.
* Versatile Application: Suitable for installation on virtually any hull material, including GRP/fibreglass, wood, steel, and aluminium (with appropriate insulation). Its UV-resistant properties also make it perfect for use in exposed, above-waterline locations.

Main Features:

* Grooved face on the flange for superior sealant adhesion and a secure, leak-proof fit.
* Standardised British Standard Pipe (BSP) parallel thread for universal compatibility.
* High-strength, load-bearing nut for secure tightening against the hull.
* Chemically resistant to common marine substances including diesel, petrol, and most antifouling paints.
* Wide operating temperature range suitable for all marine climates.
* A smooth internal bore promotes efficient water flow for raw water intakes, drains, and scuppers.

Technical Specifications:

* Product Type: Grooved Thru-Hull / Skin Fitting
* Thread Standard: BSP Parallel
* Certifications: ISO 9093-2, ABYC H-27, IMCI, Bureau Veritas
* Suitability: Approved for use above and below the static waterline
* Temperature Tolerance: -20°C to +110°C (-4°F to +230°F)
* Available Sizes (BSP): ½", ¾", 1", 1 ¼", 1 ½", 2