Astralpool Viron QL420 Cartridge Filter - 39m² - Pick Up Carrum Downs, Vic

Astralpool Viron QL420 Cartridge Filter

The Astralpool Viron QL420 is a genuine Fluidra cartridge filter for swimming pools and spas. It carries 39m² (420 US sq ft) of filter area across four removable cartridge elements, with a maximum flow rate of 500 lpm (135 US gpm) and a dry weight of 35kg.

• We keep these physically in stock, unlike most drop-shipping websites.
• Genuine Authorised Dealer

• Enquire via the button or contact us here.
• We are an Authorised Fluidra (Astralpool / Zodiac) Dealer and Warranty Agent and offer Full Warranty protection.
• We carry more spare parts than anyone!
• Manual / Brochure

Astralpool Viron QL420 Specifications

• Model: Viron QL420 (also written QL 420)
• Filter area: 39m² / 420 US sq ft
• Maximum flow rate: 500 lpm / 135 US gpm
• Filter elements: four, genuine Astralpool part SP78079
• Dry weight: 35kg / 77 lbs
• Tank: injection moulded, non-corrosive, high strength
• Pressure gauge: oil filled, long life
• Air bleed: inbuilt automatic air bleed
• Certification: Climate Care Certified by SPASA Australia
• Warranty: limited 5 years on the tank, 12 months on other components
• Suits: residential and commercial swimming pools and spas

Replacement Filter Elements for the QL420

The Viron QL420 takes four elements. The genuine Astralpool element part number is SP78079. We also stock the aftermarket equivalent:

• Astralpool Viron QL105/420 Replacement Filter Cartridge - 680 x 170 — 680mm length, 170mm diameter, 75mm top and bottom hole ID. Four required per filter.

Common QL genuine spare parts we carry include the main body o-ring (76316), lid (76301), clamp band (76306) and top manifold o-ring (76320).

Why a Viron QL Cartridge Filter

• Filtration is finer than sand or glass media, so the water polishes up better.
• No backwashing. Astralpool rates the Viron as saving between 8,000 and 20,000 litres of water a year against a media filter.
• Four large elements carry enough capacity that Astralpool rates most residential pools at one element clean per year.
• Non-corrosive injection moulded components, built for Australian conditions.

Astralpool Viron QL420 - Common Questions

How big is the Viron QL420?
39m² (420 US sq ft) of filter area, 500 lpm maximum flow, 35kg dry weight.

What is the difference between the QL420 and the QL540?
Filter area and weight. The QL420 is 39m² / 420 US sq ft and 35kg. The Viron QL540 is 50m² / 538 US sq ft and 40kg. Both are rated to 500 lpm maximum flow and both take four elements.

How many filter elements does it take?
Four. Genuine Astralpool part number SP78079.

How often do the elements need cleaning?
Astralpool rates the QL series at once a year for most residential pools, because the four elements carry a large surface area.

What is the warranty?
Astralpool provides a limited 5 year warranty on the tank and 12 months on other components. We are an Authorised Fluidra Dealer and Warranty Agent, so any claim is handled directly through us.

Why is there no Add to Cart button?
Fluidra restricts this product from online sale. It is available for pick up from our Carrum Downs store, or send an enquiry above and we will come back to you with a quote.

Manufacturer Catalogues, Diagrams & Part Numbers

Need exploded views, spare part numbers, product numbers, diagrams, or more product information? See the manufacturer catalogues: Astralpool Catalogue 2026 | Zodiac Catalogue 2026