Astral Viron QL420 Replacement Filter Cartridge Element
🏷️ Brand
Astral (genuine) / Generic option available
📝 Description
The Astral SP78079 is the genuine 105 sq ft replacement cartridge element for the Astral / Hurlcon Viron QL420 cartridge filter, about 680 mm long and 170 mm wide with a 75 mm centre hole. Each QL420 uses four elements, sold individually here, and a lower-cost generic element (HA105Q) is also available.
Astral's manual says to clean the cartridges when flow to the pool drops or the pressure gauge rises by 20 kPa (3 psi). If the pressure stays high after cleaning, or the media is worn or torn, it's time to replace them.
📦 Parts Included
- 1x Cartridge filter element (genuine SP78079 or generic HA105Q, depending on the option chosen). A QL420 filter uses 4.
📐 Measurements
Measurements are approximate.
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Length (Astral genuine): 680 mm
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Length (Generic): 676 mm
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Diameter: 170 mm
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Centre hole: 75 mm, open both ends
⚙️ Specifications & Compatibility
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Brand: Astral (genuine) / Generic
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Suits: Astral / Hurlcon Viron QL420 cartridge filter
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Elements per filter: 4
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Filter area per element: 105 sq ft (about 9.75 m²)
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Total filter area (4 elements): 420 sq ft (39 m²)
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SKU (Genuine): SP78079
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SKU (Generic): HA105Q
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Old product number: 78079
*Images are for illustration purposes only. The actual product may differ from the image. Please read the product description and included parts for full details.
💡 Before You Buy
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Order 4 for a full set. The QL420 holds four elements, and each one is sold separately.
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QL420 or QL540? Both use elements of the same size but different filter area. The QL540 needs the QL540 135 sq ft element.
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Check your filter model. The model is on the label on the filter tank. See all our filter elements for other sizes.
❓ Common Questions
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How many elements does a QL420 use? Four. They are sold individually, so order four to replace the full set.
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When should I clean or replace them? Clean when flow drops or pressure rises 20 kPa (3 psi). Replace when pressure stays high after cleaning or the media is worn or torn.
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What is the difference between genuine and generic? Genuine is Astral's own SP78079 element. Generic is a replacement element (HA105Q) made to suit the QL420, at a lower price.
📂 Downloads and Support
🚚 Shipping
🛡️ Warranty Information
Covered by a standard 12 month manufacturer warranty from Astral (genuine element) or the generic element's manufacturer.
Other Search Terms: QL105, 78079, SP78079, HA105Q, MGU-051-91075, FUD-051-91000, Viron QL 420 element, Hurlcon QL420 cartridge, quad filter cartridge, Astral QL420 replacement cartridge
