Whale 12 mm Inline Non return valve - FV1300

Whale 12mm Non-Return Valve FV1300 – Inline Check Valve for Caravan and Motorhome Water Systems

The 12mm Non-Return Valve FV1300 from Whale is a compact inline check valve designed to prevent back flow in caravan, motorhome, and campervan fresh water systems.

Built for reliability and easy installation, this 12mm one-way valve helps maintain water pressure, protect pumps, and ensure correct water flow direction within your plumbing system.

Ideal for use with 12mm semi-rigid pipework commonly found in UK leisure vehicles.

✅ Why Choose This 12mm Non-Return Valve?

• ✔ Prevents water back flow in caravan plumbing systems

• ✔ Helps maintain pump prime and system pressure

• ✔ Protects water pumps from reverse flow damage

• ✔ Simple inline installation

• ✔ Compatible with 12mm semi rigid and push-fit pipework

• ✔ Genuine Whale FV1300 part

⚙️ Key Features

• Part Number: FV1300

• Pipe Size: 12mm

• Type: Inline non-return (check) valve

• Application: Fresh water systems

• Installation: Push-fit / semi-rigid pipe connection

• Material: Durable plastic construction

• Flow Direction: One-way (arrow marked on body)

🚐 Typical Applications

This 12mm non-return valve is commonly used in:

• Caravan fresh water systems

• Motorhome plumbing installations

• Campervan conversions

• Inline pump protection setups

• Cold water feed lines

It is particularly useful where water siphoning or backflow may occur when pumps switch off.

🛠 Installation Guidance

1. Ensure water system is drained and depressurised.

2. Cut the 12mm pipe cleanly.

3. Insert the valve inline, ensuring the flow arrow points in the correct direction.

4. Secure pipe connections fully into push-fit fittings.

5. Test the system for leaks before full use.

Always verify correct flow direction before final installation.

📦 What’s Included

• 1 × Whale 12mm Non-Return Valve (FV1300)

Why Buy This Caravan Non-Return Valve?

If you're experiencing water flowing back into the tank, pump cycling issues, or pressure loss, this 12mm check valve offers a simple and affordable solution.

Choosing a genuine Whale valve ensures:

• Reliable long-term performance

• Correct compatibility with UK caravan plumbing systems

• Trusted brand quality used across the leisure vehicle industry

A small component that plays a critical role in protecting your water system.