Piping 

How does spa plumbing work and what components does it include?

Spa plumbing is made up of several essential components:

• Flexible pipes and rigid pipes
• PVC fittings
• Valves
• Pump unions and heater unions
• Couplings, gaskets and water outlets

The parts can be male, female, or male-female, depending on the type of connection. Some components, such as Waterway unions, require precise compatibility, especially regarding diameter and threading.

The purpose of the plumbing system is to ensure water circulation between the pump, the heater, the jets, and the massage systems. The quality of the PVC pipe and the proper match of the inner diameter determine the overall watertightness of the network.

How to choose the right plumbing components for your spa?

Choosing the right part starts by checking the inner and outer diameter of the existing pipe. Inch-based dimensions must match exactly to avoid leaks. The choice between flexible or rigid pipe depends on the installation area. Fittings and unions must match the connection type: male, female, or union.

For shut-off valves, guillotine models make maintenance easier. When replacing components, carefully measure pipe lengths, allow for a slight margin, and use the appropriate clamps, couplings, or adhesives.

To help you, here are the most common measurements used in spas:

"Imperial" Standard

• 1/4 inch (outer Ø: 9 mm)
• 3/8 inch (outer Ø: 14.5 mm)
• 1/2 inch (outer Ø: 21 mm)
• 3/4 inch (outer Ø: 27 mm)
• 1 inch (outer Ø: 33 mm)
• 1.5 inch (outer Ø: 48 mm)
• 2 inches (outer Ø: 60 mm)
• 2.5 inches (outer Ø: 74 mm)

"Metric" Standard

• 20 mm
• 25 mm
• 32 mm
• 50 mm
• 63 mm

How to install and maintain your spa plumbing?

Start by turning off the power and draining or isolating the circuit using the valves. Align the pipes to avoid tension. For PVC bonding, clean the surfaces, apply the appropriate glue, then allow it to dry. Clamps stabilize flexible pipes and unions should be tightened manually.

Maintenance consists of checking the joints, tightening clamps, monitoring humidity, and inspecting the valves. After draining, rinsing helps prevent residue buildup. After long periods of inactivity, a full inspection is recommended.

Which spa plumbing products should you choose?

To ensure the reliability of your hydraulic system, several components are recommended. Spa owners use spa pipes, flexible or rigid depending on the need. Spa clamps secure flexible pipes, and the spa check valve prevents backflow. Essential components include the spa elbow, the spa tee, the spa coupling, and the pipe reducer.

More complex installations require specific spa fittings, including Waterway models, as well as spa shut-off valves. Spas equipped with water features use components such as spa waterfalls or spa fountains, which require perfectly watertight fittings.

For sealing or maintenance, a spa plug may be used. More complex systems use a spa manifold to distribute water flow. Filtration components such as drains and the spa skimmer must be properly connected to maintain water quality.

When performing repairs, use a spa adhesive or a spa silicone suitable for PVC. Spa gaskets ensure watertightness and should be replaced at the first signs of wear.

How can I be sure the diameter is compatible with my spa?

Measure the inner and outer diameter of the original pipe. The parts must match exactly to ensure watertightness.

Are the parts compatible with all spa brands?

Most parts, fittings, unions, or valves are multi-brand, but certain specific unions require the exact reference of the pump or heater.

Is it easy to install a plumbing section yourself?

Yes, as long as you choose the correct diameters and use a suitable PVC adhesive. If in doubt, you can contact a professional or our technicians via the video assistance service Boospa Service.

Are the parts guaranteed?

All our products come with a 2-year warranty under specific conditions, except certain items…

Are the products in stock?

Most of our spare parts are available in stock. In some cases, a product may be in the process of being restocked or available on order. We invite you to contact our customer service when this notice is displayed to know the exact lead time.

What is the delivery time for spa plumbing?

All our products in stock are shipped within 48 to 72 hours in mainland France (excluding Corsica) and within 10 days to all other countries.

Can I return a part if it is not compatible?

Returns are possible according to the applicable general terms and conditions of sale. You have 14 days to do so. The product must be returned new, in its original packaging, and without any signs of use. Always remember to check the diameter before installation.