Extensive Inventory: We carry over 100,000 individual parts in nearly 9,000 lines and dozens of brands across our wide distribution warehouses in Victoria, New South Wales, Queensland, and Western Australia.

Zurnbackwater valve

We recommend Express Post options for quickest deliveries. Express Post items are generally received in 1-5 business days.

8Backwater Valve cast iron

Please read our Corrosive Water Info for information about the damage corrosive water can cause, and what manufacturers will or won't cover.

Many parts are OEM and may be supplied without manuals or in minimal packaging. Manuals may be available on the product listing or upon request.

Heater & Spa Parts has Australia's biggest range of Spa Spare Parts, Spa Supplies and Pool Heaters from the biggest brands. A real store with real stock. We aren't just a drop-shipper like many online shops.

This allows you to set the correct bypass flow through the heat pump to achieve the 2-3° differential between Inlet & Outlet, as required by most heat pump manufacturers.

Backwater valve

6"cast iron backwater valve

We take immense pride in being the industry leaders, working closely with all the major manufacturers and distributors in the pool and spa industry. With a legacy built on excellence, we offer an unrivaled selection of products backed by an ethos of quality and customer satisfaction.

All parts should be installed by a qualified, experienced, and licensed professional. Electrical and gas components must be diagnosed and installed by a licensed and qualified technician.

Pickups are available at 10 Industry Blvd, Carrum Downs Vic. Our Qld, NSW, WA warehouses are for shipping only at this stage.

We carry more stock, ship faster than anyone, are Fully Australian Owned, and have a physical store. We aren't just a drop-shipper.

Mifabbackwater Valve

4cast iron Backwater Valve

Aeware, AquaFlo, Astralpool, Balboa, CG Air, CMP, Darlly, Davey, Dega, Del Ozone, Edgetec, EvoHeat, Fluidra, Gecko, Goulds, Hendy, Honeywell, Hurlcon, Hydroquip, ITT, Jandy, Joyonway, Laing, LX, Magnum, Onga, Pentair, Raypak, Rheem, Reemay, Reltech, S & P, Sensaheat, Spa-King, SpaNet, Spa-Quip, SpaZazz, Teledyne Laars, Waterco, Waterway, Weld-on, Xylem, Zodiac ...and more

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Not your cheap valve! These are built to last! An essential part of installing a pool or spa heat pump, this valve installation kit includes Two 3-Way 40/50mm Valves. 40mm pipe glues inside or 50mm sockets glue outside.

Alpine Spas, Arctic Spas, Artesian Spas, Bullfrog Spas, Caldera Spas, Cyclone Spas, Decina Spas, Designer Spas, Dimension One Spas, Endless Spas, Fisher Spas, Heritage Spas, HotSpring Spas, Impact Spas, Jacuzzi Spas, Just Spas, LA Spas, Lanark Spas, Leisurite Spas, Maax Spas, Monarch Spas, O2 Spas, Oasis Spas, Sapphire Spas, SCS Spas, Signature Spas, Spa Industries Spas, Spa World Spas, Spas Direct Spas, Sundance Spas, Vortex ...and more