Whale 13 mm In‑Line Non‑Return Valve

Whale 13 mm Non‑Return Valve (Model FV1227)

Keep your pump lines primed and prevent unwanted back‑flow with the Whale FV1227 non‑return valve. Designed for 13 mm (½″) flexible hoses in bilge, freshwater, or washdown systems, this compact valve installs in-line and maintains prime even when the pump stops 

Built with a sturdy glass‑filled polypropylene body and a nitrile rubber flap, the FV1227 ensures rugged reliability in marine environments. Its easy-fit design requires no tools — simply push into trimmed hose ends with the arrow pointing towards flow .

✅ Key Features:

• ✔️ Designed for 13 mm (½″) hoses in bilge or freshwater plumbing 

• ✔️ In-line check valve maintains pump prime and stops back‑flow 

• ✔️ Rugged glass‑filled polypropylene body with nitrile flap for durability 

• ✔️ Tool‑free installation — trim hose, fit both ends, and align arrow 

• ✔️ Compact length ≈ 44 mm — ideal for tight plumbing runs