TruDesign Composite Non‑Return Valve

Ensure reliable, one-way flow with the TruDesign Non-Return (Check) Valve—a marine-grade check valve manufactured in New Zealand from UV-stabilised, glass‑reinforced nylon composite. Designed to prevent backflow and siphoning with minimal cracking pressure, this lightweight, in-line valve resists water hammer and pressure surges thanks to its stainless steel spring. Clear flow direction is marked with a white arrow for foolproof installation.

Available in 6 hose barb sizes (¾″–2″ / 19–50 mm) and optional BSP/NPS threaded hose-tail models, the valve offers an effective, space-saving solution for bilge, freshwater, waste tanks, and deckwash systems. It’s corrosion-resistant, chemical-resistant, and suitable for direct sunlight—optimized for marine and agricultural environments 

Key Features:

• Robust composite body: UV‑stable, lightweight, high-impact strength 

• Stainless steel spring: no corrosion or stuck-open risk 

• Low cracking pressure: opens with minimal flow resistance 

• Compact in-line design: installs without additional fittings 

• White arrow marking for flow direction ease 

• Available sizes: 19 mm (¾″) to 50 mm (2″), plus 25 mm & 38 mm BSP/NPS tails 

• Resistant to marine chemicals, UV, and electrolysis—built to last on board