Spa Ozonator Parts

Spa Ozonator Parts

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    Ozone 30 Second Detection Kit, UltraPure, Retail

    Ozone 30 Second Detection Kit, UltraPure, Retail

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    Ozone 30 Second Detection Kit, UltraPure, Retail

    Ultra Pure

    1008069S
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    $17.90
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Spa Ozonator Parts

Service and restore your spa ozone system with ozonator parts and components from Del Ozone, Waterway, Hydro-Quip, AquaSunOzone, Ozone Joe's, and Prozone. PST Pool Supplies stocks check valves, ozone injectors, UV replacement bulbs, installation kits, and renewal kits for spa ozonator systems — starting from $9.90.

Spa ozonators generate ozone gas (O₃) that is injected into the spa's circulation system to oxidize contaminants, kill bacteria, and reduce chemical demand. The ozone system consists of three key subsystems — the generator unit, the injection system, and the check valve — all of which have serviceable components. The key parts in this collection: Check valves are the most commonly replaced ozonator component — the one-way valve in the ozone line prevents spa water from back-flowing into the ozonator when circulation stops. A failed check valve allows water to enter the ozonator, destroying the corona discharge cell or UV bulb. The AquaSunOzone 1/4\" Barb Kynar check valve and Del Ozone DelCheck 1-1/2\" slip check valve (CO-0101) serve different installation configurations. Ozone injectors (venturi fittings) draw ozone into the water stream: the Waterway ozone injector (3/4\" barb x 3/4\" barb x 3/8\" barb) and Del Ozone 3/4\" barb injector and Kynar 3/4\" NPT injector #584 provide the venturi mixing for different plumbing configurations. UV replacement bulbs — the UltraPure UP350/EUV3 10W bulb — replace depleted UV-C lamps in UV-type ozonators; UV bulbs require replacement every 12–24 months regardless of visible appearance. Installation and renewal kits — the Hydro-Quip Ozone Install Kit, Ozone Joe's Installation Kit, and Del Eclipse Renewal Kit (with tubing, check valve, and flow meter) — provide complete component sets for new installations or full system refreshes. The Prozone PV7/PZVII gasket and DEL Ozone parts bag serve specific system maintenance needs.

The most common spa ozonator service requirements: (1) Replace the check valve annually — do not wait for the ozonator to fail; proactive check valve replacement costs $15–$28 and prevents a $150+ ozonator replacement. (2) Replace UV bulbs every 12–24 months — UV output degrades invisibly; a bulb that appears lit may be producing insufficient UV-C to generate ozone effectively. (3) Inspect the injection tubing for kinking or cracking — ozone degrades rubber and vinyl tubing over time; replace with Kynar or HDPE tubing rated for ozone exposure.

Shop spa ozonator parts at PST Pool Supplies and keep your spa's ozone sanitation system functioning at full effectiveness.

Frequently Asked Questions

Why is the ozone check valve the most important part of a spa ozonator system?
The ozone check valve is a one-way valve in the ozone injection line that prevents spa water from flowing backward into the ozonator when the spa pump cycles off. Without it — or when it fails — water back-siphons from the spa plumbing into the ozone tubing and reaches the ozonator unit. Water inside a corona discharge (CD) ozonator destroys the corona discharge cell immediately; water inside a UV ozonator corrodes the UV lamp socket and destroys the bulb. Either failure requires an expensive ozonator replacement. Because the check valve is under constant back-pressure each time the pump stops, the spring inside degrades over time — a check valve that worked when new may pass water after 1–2 years of thermal cycling. Replace the check valve annually as preventive maintenance — it costs $15–$28 versus $140–$960 for an ozonator replacement. Signs of a failed check valve: ozonator stops producing ozone, visible moisture or water droplets inside the ozone tubing near the ozonator, or the ozonator emits a burning smell after water contact.
How do I know if my spa ozonator is still working?
Spa ozonators produce no visible output — you cannot see ozone being generated. Testing methods: (1) Smell test — ozone has a distinctive sharp, clean smell similar to after a lightning strike. With the spa running and the ozonator active, carefully smell near the ozone injection point or the spa water surface; a faint ozone odor confirms production. Do not inhale concentrated ozone. (2) Ozone test strips — specific ozone test strips (not the same as chlorine/bromine strips) can detect dissolved ozone in spa water; a positive reading confirms the system is injecting ozone into the water. (3) UV bulb inspection — for UV-type ozonators, visually confirm the UV lamp is lit (a faint blue-purple glow visible through the inspection window or when viewed in the dark). A non-glowing bulb means no UV output and no ozone production. (4) Age-based replacement — UV bulbs produce decreasing ozone output as they age, even while still lit. Replace UV bulbs every 12–24 months regardless of visible status. CD ozonators have longer cell life (3–5 years) but also degrade with age.
What is the difference between a UV ozonator and a corona discharge ozonator?
The two technologies generate ozone differently and have different service requirements: UV (ultraviolet) ozonators use a UV-C lamp to split oxygen molecules (O₂) into individual oxygen atoms that then combine with other oxygen molecules to form ozone (O₃). UV ozonators are simpler, less expensive, and generate lower ozone output — suitable for residential portable spas up to 500–600 gallons. The UV bulb requires replacement every 12–24 months (the UltraPure UP350/EUV3 10W bulb is a common replacement). UV ozonators are more sensitive to water intrusion. Corona discharge (CD) ozonators generate ozone by passing air through a high-voltage electrical field that mimics lightning — more energy-efficient and producing significantly higher ozone concentrations than UV. CD ozonators (like the DEL Eclipse series) are used for larger spas and pools, and the CD cell lasts 3–5 years with proper check valve maintenance. CD ozonators are more expensive but generate sufficient ozone to meaningfully reduce sanitizer demand in larger water volumes. Both types require a check valve in the ozone line; CD ozonators are particularly sensitive to water because the high-voltage cell is immediately destroyed by moisture.
How do I install or replace the ozone injector in a spa?
The ozone injector (venturi fitting) creates the vacuum that draws ozone from the ozonator into the water stream — it is installed in the return plumbing line where water flows past a narrow venturi throat, creating suction on the ozone port. Replacement steps: (1) Turn off spa power at the breaker. (2) Locate the existing injector — a T-shaped fitting in the return plumbing with a small barb port on the branch, connected to the ozone tubing. (3) Cut out the old injector — if glued in place, cut the PVC pipe on each side of the fitting. (4) Glue in the new injector using PVC primer and cement — ensure the flow arrow on the injector body points in the direction of water flow (toward the spa). Flow direction matters: the venturi effect only works when water flows through the injector in the correct direction. (5) Connect the ozone tubing to the barb port and secure with a stainless hose clamp. (6) Allow cement to cure per manufacturer directions before refilling. The Waterway ozonator injector (3/4" barb x 3/4" barb x 3/8" ozone barb) fits standard residential spa plumbing; the Kynar injector #584 (3/4" NPT) is the chemical-resistant option for high-ozone installations.