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Fiamma Expansion Pressure Tank Accumulator Water Pump Black - Fiamma - 02478-02

Fiamma Expansion Pressure Tank Accumulator Water Pump Black - Fiamma - 02478-02

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eBayFiamma A20 Expansion Pressure Tank (02478-03-)
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B&QB&Q - Expansion Pressure Tank Accumulator For Caravan Motorhome Water Pump Black
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Product Information

Full details

This Fiamma Expansion Pressure Tank is designed for caravan and motorhome owners seeking a smoother, quieter water flow. It's ideal for UK touring to eliminate the 'pulsing' effect from pressure switch pumps and reduce water hammer. While it significantly improves water delivery, users should note its pre-charged pressure requires careful adjustment if modified.

All features

Model Part Number02478-02
BrandFiamma

Extended Product Information

FAQs

What is the purpose of an expansion pressure tank?

It acts as an accumulator, storing a small volume of water under pressure. This smooths out water delivery from pressure switch pumps, reduces pump cycling, and minimizes water hammer.

Can I install this on any water system?

This tank is most effective with pressure switch water pumps typically found in caravans, motorhomes, and boats. It's designed for 13mm hose connections.

How often should I check the pre-charge pressure?

It is recommended to check the pre-charge pressure at least annually, or if you notice a degradation in performance.

What is the maximum pressure I can set for the tank?

The pre-charge pressure can be adjusted via the valve but should not exceed 3 bar (approx. 43.5 psi). The recommended setting is 0.9 bar (13 psi).

Does it come with everything needed for installation?

The tank includes straight and angled 13 mm hose connectors and fixing screws. You may need additional hose and clamps depending on your specific installation requirements.

Can I mount the tank vertically or horizontally?

Yes, the tank can be mounted in any position. However, mounting it close to the water pump is recommended for optimal performance.

Troubleshooting

Water flow is still pulsing

Ensure the tank is installed correctly after the pump. Check that the pre-charge pressure is set to approximately 0.9 bar (13 psi) and adjust if needed. Verify the pump's pressure switch is functioning correctly.

Water hammer is not reduced

Confirm the tank is connected in line with the water system. Ensure there are no air leaks in the system, as this can compromise the accumulator's effectiveness.

Leaking connections

Tighten the hose connectors. Ensure the hose clamps are secure and the hose material is not damaged. Replace connectors if they appear worn or cracked.

Tank seems to lose pressure

Check the air valve for leaks and ensure it is properly sealed. Verify the overall water system for any slow leaks that might be draining pressure.

Pros and Cons

Pros

  • Significantly improves water flow consistency.
  • Reduces noise and wear on plumbing systems.
  • Compact and easy to install.
  • Flexible mounting options.
  • Adjustable pre-charge for customization.

Cons

  • Requires careful adjustment of pre-charge pressure.
  • Primarily benefits systems with pressure switch pumps.
  • Installation requires basic plumbing knowledge.

Setup, Compatibility & Care

Setup:

  1. Identify Location: Choose a mounting spot close to the water pump, ensuring it can be securely fixed.
  2. Connect Hoses: Use the provided 13 mm straight or angled connectors to attach the tank to your existing water lines. Ensure connections are snug to prevent leaks.
  3. Mount the Tank: Secure the tank using appropriate fixing screws.
  4. Check Pre-charge Pressure: Before full system pressurization, verify the pre-charge pressure using a suitable gauge. Adjust if necessary by adding or releasing air via the valve, ensuring it does not exceed 3 bar. The recommended pressure is 0.9 bar (13 psi).
  5. Pressurize System: Turn on your water pump and check for any leaks at the connection points.

Compatibility:

  • Primarily designed for use with 12V or 24V pressure switch water pumps commonly found in RVs, caravans, and boats.
  • Requires 13 mm (approx. 1/2 inch) internal diameter hose connections.

Care:

  • Periodically check the pre-charge pressure (e.g., annually) and adjust if needed.
  • Inspect hose connections for leaks and tighten as necessary.
  • Clean the exterior with a damp cloth. Avoid abrasive cleaners.

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