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Island Spas Spillway Valve – Waterfall Valve – OEM

$67.00

How do I install this valve? Part number OP03-0148-48A or 03-0148-48A

In order to install this valve you will need to open the cabinet, dig through the insualation until you can see the pvc plumbing connection. You will need PVC Glue and PVC Primer to be able to glue the new valve in place.

If the lower part is already glued in and not leaking, can I just replace the inner parts of the valve?

Yes, if the lower part of the valve that is glued to the hose is still in tact and not leaking from the glue joint to can just replace the valve parts. They will screw right in. See the picture showing the parts break down and order of assembly.

Is there another type of valve available for this water water fall?

No, this is the only valve that will work for this type of water fall.

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Spillway Valve – Waterfall Valve – OEM

OEM replacement spillway valve used on:

  • Island Spas (2013–2024 models)

  • TidalFit Swim Spas

⚠️ Not used on Artesian Elite models.

Installation Note:
This spillway valve must be installed using PVC primer and PVC cement when replacing the full valve body. If only the internal components are being replaced, glue may not be required.

✅ Not Sure It Fits? Verify Before Ordering

Island Spas parts vary by model, model year, trim and generation. Spas built during the 2025/2026 changeover may be current-generation or “Classic” carryover, so the model year alone does not settle it — match your spa pack label.

To help us identify the correct replacement, please send clear photos of:

  • Your existing part, including any label
  • Your spa serial number sticker
  • Your spa pack / control system label

EZ Hot Tub Parts can help confirm fitment before you order and help reduce costly returns.


Match the plumbing size and the body style first, then the handle or cap — Island Spas used more than one spillway body over the years and the visible cap is often the only difference a customer can see. Measure the pipe it connects to, photograph the assembly, and send it through the form on this page if you are not certain.

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