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The Whale 3/8″ male to 12 mm push-fit adapter (Part AK1223) is an essential genuine Whale plumbing fitting that creates a secure, leak-resistant connection between your Whale 8 L or 13 L water heater and standard 12 mm push-fit pipework used in caravan and motorhome plumbing systems. Ideal for both DIY installations and professional workshop fit-outs, this adapter makes upgrading or repairing your onboard hot water supply quick and reliable.
🔩 Connection Fitting: 3/8″ BSP male thread on one end, 12 mm push-fit connection on the other — easy to install without tools.
🛠 Plumbing Compatibility: Designed for use with Whale 8 L and 13 L water heaters, including Rapid and similar models frequently used in caravans, motorhomes and RVs.
🚐 Secure & Leak-Free: Push-fit technology ensures tight seals with semi-rigid caravan plumbing pipework.
⚙️ Durable Component: Strong and reliable adaptor built for caravan-grade plumbing systems — ideal for long-term service.
📍 Part Number: AK1223 — genuine Whale spare fitting for water heater installations.
🧰 Fast Push-Fit Installation: Connects instantly to 12 mm pipework without clamps or tools, speeding up installs and reducing labour.
🔄 Reliable Connection: Helps prevent leaks and water loss from your hot water system when servicing or modifying plumbing layouts.
🚍 Perfect for Leisure Vehicles: Suited to caravans, motorhomes, campervans and RVs where dependable hot water delivery matters.
🧩 Genuine Whale Part: OEM-grade quality ensures proper fit and compatibility with Whale water heater systems.
🧠 Versatile Plumbing Use: Works with a range of semi-rigid pipework common in onboard water systems.
✔ Caravan, motorhome or campervan owners upgrading hot water plumbing
✔ Service workshops stocking genuine Whale spares
✔ Replacing damaged or worn 3/8″-to-12 mm water heater connections
✔ DIY enthusiasts fitting or extending onboard water heater systems
This adapter is compatible with various Whale water heater models, including:
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