🌊 Certikin Vision FVS24T 24″ (600mm) Top Mount Sand Filter – 14m³/hr

Superior filtration performance for pristine swimming conditions, season after season

💧 Product Overview

The Certikin Vision FVS24T is a premium 24″ (600mm) top mount sand filter engineered to deliver crystal clear water for medium to large swimming pools. Manufactured using advanced bobbin wound fibreglass technology, this robust filtration system combines superior build quality with thoughtful design features that make maintenance quick and straightforward.

With a powerful flow rate of 14m³/hr and a generous 0.28m² filtration area, the FVS24T efficiently handles pools up to 112,000 litres when operating on an 8-hour turnover cycle. The patented 10″ diameter lid provides exceptional access for servicing, whilst the unique clear valve mounting ring allows visual monitoring of filtration and backwashing processes in real-time.

Backed by an impressive 10-year full tank warranty for residential installations, the Vision FVS24T represents Certikin’s commitment to quality and reliability. Whether you’re a professional installer or an experienced pool owner, this filter delivers the performance and durability needed to maintain pristine water quality year after year.

⭐ Key Features

• ✅ Patented 10″ Diameter Lid – Oversized opening provides easy access for media changes and internal inspections, significantly reducing maintenance time
• ✅ Clear Valve Mounting Ring – Transparent ring allows visual confirmation of filtration and backwashing operations without interrupting the process
• ✅ Bobbin Wound Fibreglass Construction – Advanced winding technology creates a tank of exceptional strength and consistency for long-term durability
• ✅ 14m³/hr Flow Rate – Powerful throughput suitable for medium to large residential pools up to 112,000 litres
• ✅ 0.28m² Filter Area – Generous filtration surface ensures efficient particle capture and extended filter cycles
• ✅ Hydraulically Balanced Laterals – Optimised underdrain system maximises water flow distribution during filtration and backwashing
• ✅ Automatic Internal Air Bleed – Self-venting system expels trapped air from the tank, maintaining peak performance
• ✅ 6-Way Multiport Valve Included – Complete with 1.5″ and 50mm quick connect unions for flexible installation options
• ✅ Pressure Gauge & Air Relief – Supplied complete with essential monitoring and safety equipment
• ✅ 10-Year Tank Warranty – Full residential warranty demonstrates manufacturer confidence in product quality

🔧 Technical Specifications

Specification	Value
Model Number	FVS24T
Filter Type	Top Mount Sand Filter
Tank Diameter	24″ (600mm)
Flow Rate	14 m³/h
Filter Area	0.28 m²
Media Capacity	160 kg
Working Pressure (Max)	2.5 bar
Valve Type	6-Way Multiport
Inlet/Outlet Connections	1.5″ / 50mm
Tank Material	Bobbin Wound Fibreglass Reinforced Polyester
Lid Diameter	10″ (254mm)
Operating Temperature	0°C to 45°C
Warranty (Residential)	10 years (tank) / 1 year (components)
Warranty (Commercial)	5 years (1 year full + 4 years pro rata)

📐 Physical Dimensions

Dimension	Measurement
Overall Height (A)	620 mm
Tank Body Height (B)	484 mm
Width at Base (C)	484 mm
Width at Top (D)	620 mm
Lid Height (E)	203 mm
Mounting Ring Height (F)	203 mm
Port Offset (G)	54 mm
Total Height with Valve (I)	839 mm

📏 Pool Sizing Guide

Sizing Principle: The filter flow rate should turn over the entire pool volume within 6-8 hours for optimal water quality.

Formula:

Required Flow Rate (m³/h) = Pool Volume (m³) ÷ Turnover Time (hours)

Pool Size Compatibility

Pool Type	Volume Range	Suitability
🏊 Small above-ground	Up to 30,000 L	Excellent – provides faster turnover
🏊 Medium above-ground	30,000 – 60,000 L	Excellent – ideal sizing range
🏊 Large above-ground	60,000 – 80,000 L	Very Good – 6-hour turnover achieved
🏠 Small in-ground	Up to 50,000 L	Excellent – optimal performance
🏠 Medium in-ground	50,000 – 85,000 L	Very Good – standard 6-hour turnover
🏠 Large in-ground	85,000 – 112,000 L	Good – 8-hour turnover achieved

This Filter:

📍 Flow Rate: 14 m³/hr
📍 Optimal Pool Size: 50,000 – 85,000 litres (6-hour turnover)
📍 Maximum Pool Size: Up to 112,000 litres (8-hour turnover)

💡 Sizing Tip: For pools with high bather loads, heavy debris, or extended swimming seasons, select a filter capable of achieving a 6-hour turnover for best results.

🔌 Installation Requirements

Plumbing Connections

Requirement	Specification
Inlet Connection	1.5″ (50mm)
Outlet Connection	1.5″ (50mm)
Valve Position	Top mount
Union Type	Quick connect (included)

Physical Installation

Requirement	Details
Base	Solid, level concrete slab or equivalent
Clearance Above	Minimum 500mm for valve operation and lid removal
Clearance Around	Minimum 300mm for maintenance access
Location	Well-drained area, protected from flooding
Positioning	Compliance label facing front for identification

Pump Compatibility

⚠️ Important: The filter must be matched with an appropriately sized pump for optimal performance.

Parameter	Specification
Recommended Pump Flow	10 – 14 m³/hr
Maximum Flow Rate	Do not exceed 14 m³/hr
Pump Head	Must overcome filter resistance at 2.5 bar max

💡 Tip: When installing below water level or connected to mains water, install isolation valves before the filter and after the valve to prevent water flow during routine maintenance.

🔄 Maintenance Guide

Routine Maintenance Schedule

Task	Frequency	Method
Check pressure gauge	Weekly	Note reading; baseline typically 0.5-1.0 bar
Backwash filter	When pressure rises 0.5 bar above baseline	Until sight glass runs clear (1-3 minutes)
Rinse after backwash	After each backwash	30-60 seconds until water clears
Inspect seals & O-rings	Seasonally	Replace if worn, cracked, or hardened
Check media level	Annually	Top up if settled below recommended level
Full media replacement	Every 5-7 years (sand)	Replace entire media bed

Pressure Gauge Reference

Reading	Status	Action
📊 0.5 – 1.0 bar	Clean filter (baseline)	Normal operation
📊 1.0 – 1.5 bar	Building debris	Monitor closely
📊 1.5+ bar above baseline	Backwash required	Perform backwash cycle
📊 2.5 bar	Maximum working pressure	Do not exceed

Winterisation (UK Climate)

Proper winterisation is essential to protect your filter from frost damage during the colder months:

1. Drain Completely – Remove all water from the filter tank via the drain port
2. Remove Drain Plug – Store separately to ensure tank drains fully
3. Drain Multiport Valve – Ensure no water remains trapped in valve body
4. Leave Valve Open – Set to winterise position or between settings
5. Cover or Store – Protect from elements; ideally store in frost-free location
6. Protect Pressure Gauge – Remove if possible or ensure fully drained

⚠️ Critical: Never leave water in the filter during freezing conditions. Ice expansion can crack the tank and damage internal components.

🪨 Filter Media Information

Compatible Media Types

Media Type	Filtration Rating	Lifespan	Benefits
Silica Sand	20-40 microns	5-7 years	Economical, proven performance, widely available
Glass Media	5-15 microns	10+ years	Finer filtration, improved clarity, reduced backwashing
ZeoSand (Zeolite)	3-5 microns	5 years	Superior clarity, ammonia reduction, lighter weight

Media Capacity: 160 kg

Media Grades for Sand

Layer	Grade	Depth
Top Layer	0.4-0.8mm (16-30 mesh)	Primary filtration
Support Layer	1.0-2.0mm (optional)	Supports finer grade

💡 Glass Media Benefit: Upgrading to glass media can improve filtration to 5-15 microns (compared to 20-40 for sand) whilst reducing backwash frequency by up to 20%.

Signs Media Needs Replacing

• Poor water clarity despite correct chemical balance
• Shortened filter cycles between backwashes
• Cloudy water returning to pool after filtration
• Sand or media particles visible in pool
• Media bed has channelled or compacted

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🔬 Filtration Performance

Performance Metric	Specification
Filter Area	0.28 m²
Flow Rate	14 m³/hr
Filtration Velocity	50 m³/h/m²
Sand Filtration Rating	20-40 microns
Glass Media Rating	5-15 microns

Micron Rating Guide

Rating	What It Captures
40+ microns	Visible debris, leaves, large particles
20-40 microns	Sand, dirt, visible fine particles
10-20 microns	Fine silt, some algae spores
5-10 microns	Very fine particles, most algae, improved clarity
3-5 microns	Exceptional clarity, bacteria-sized particles

⚙️ Multiport Valve Positions & Functions

The FVS24T includes a 6-way multiport valve with the following positions:

Position	Function	When to Use
FILTER	Normal filtration mode	Everyday operation; water passes through media
BACKWASH	Reverse flow to clean media	When pressure rises 0.5 bar above baseline
RINSE	Settles media after backwash	Always use for 30-60 seconds after backwashing
WASTE	Bypasses filter to drain	Vacuuming heavy debris; lowering water level
RECIRCULATE	Bypasses filter to pool	Distributing chemicals; testing flow without filtration
CLOSED	Stops all flow	Maintenance only – never use with pump running

⚠️ Important: Always switch off the pump before changing valve positions to prevent damage to the spider gasket seal.

🎯 Ideal Applications

Application	Pool Volume	Suitability
🏠 Residential above-ground pools	Up to 80,000 L	Excellent
🏠 Residential in-ground pools	Up to 112,000 L	Excellent
🏡 Large garden pools	60,000 – 100,000 L	Ideal
🏢 Small commercial (light use)	Up to 85,000 L	Good
🏊 Swim spas & exercise pools	Up to 50,000 L	Excellent

❓ Frequently Asked Questions

Q: What size pool will this filter handle? A: The FVS24T is suitable for pools up to 112,000 litres with an 8-hour turnover, or optimally 85,000 litres with a 6-hour turnover. The 14m³/hr flow rate provides excellent filtration for medium to large residential pools.

Q: How often do I need to backwash? A: Backwash when the pressure gauge reads approximately 0.5 bar (7 psi / 50 kPa) above your clean baseline reading. This is typically every 1-2 weeks during the swimming season, though frequency depends on bather load and debris levels.

Q: What filter media should I use? A: The filter is compatible with silica sand (most economical), glass media (finest filtration), or zeolite. The media capacity is 160 kg. For improved water clarity, consider upgrading to glass media which filters down to 5-15 microns.

Q: How long does filter media last? A: Silica sand typically lasts 5-7 years with proper maintenance. Glass media can last 10+ years. ZeoSand typically requires replacement every 5 years. Annual inspection is recommended.

Q: What pump do I need? A: Select a pump delivering 10-14 m³/hr. The pump flow rate should not exceed the filter’s maximum flow rate of 14 m³/hr. Certikin Aquaspeed pumps from 0.75hp to 1.5hp pair well with this filter.

Q: What warranty is included? A: Residential installations receive a 10-year full tank warranty plus 1 year on all other components. Commercial applications receive a 5-year warranty (1 year full plus 4 years pro rata).

Q: Is this filter suitable for salt chlorinated pools? A: Yes, the fibreglass construction and non-metallic internal fittings make the Vision range fully compatible with salt chlorination systems.

Q: Can I use this filter with Baquacil? A: No. Vision filters are NOT suitable for use with Baquacil (PHMB-based) sanitiser systems. This is clearly stated by the manufacturer.

Q: What connections are included? A: The multiport valve comes complete with 1.5″ and 50mm quick connect unions, providing flexibility for both imperial and metric plumbing systems.

Q: How do I winterise the filter? A: Drain all water from the tank and valve, remove the drain plug and store it separately, and ideally store the filter in a frost-free location. Never leave water in the filter during freezing conditions.

📥 Downloads & Resources

📄 Installation & Owners Manual – Complete installation guide and operating instructions

📄 Product Brochure – Technical specifications and features overview

🏆 Why Choose the Certikin Vision FVS24T

• ✅ Superior Build Quality – Bobbin wound fibreglass construction using digitally controlled winding technology ensures exceptional strength and consistency
• ✅ Easy Maintenance – Patented 10″ lid and clear mounting ring make servicing straightforward and visual monitoring simple
• ✅ Optimal Performance – Hydraulically balanced laterals maximise filtration efficiency during both normal operation and backwashing
• ✅ Proven Reliability – Backed by a comprehensive 10-year tank warranty demonstrating manufacturer confidence
• ✅ Versatile Sizing – 14m³/hr flow rate suits a wide range of residential pools from 50,000 to 112,000 litres
• ✅ Complete Package – Supplied with multiport valve, pressure gauge, and air relief – ready for installation

🤝 Why Buy from Parts4Tubs

• ✅ UK-Based Company – Local support from knowledgeable pool specialists
• ✅ Fast UK Delivery – Quick dispatch to get your pool up and running
• ✅ Expert Advice – Free sizing guidance and technical support
• ✅ Competitive Pricing – Great value on quality pool equipment
• ✅ Full Warranty Support – We stand behind every product we sell
• ✅ Easy Returns – 30-day returns on unused items
• ✅ Complete Range – Compatible filter media, spare parts, and accessories available
• ✅ Established Expertise – Built on the success of buildahottub.com

✨ Summary

The Certikin Vision FVS24T is a premium quality 24″ (600mm) top mount sand filter delivering 14m³/hr flow rate for pools up to 112,000 litres. Featuring advanced bobbin wound fibreglass construction, a patented 10″ access lid, clear valve mounting ring, and hydraulically balanced laterals, this filter combines excellent filtration performance with easy maintenance. With 160 kg media capacity, 0.28m² filter area, and compatibility with sand, glass, or zeolite media, the FVS24T offers versatile, reliable filtration backed by Certikin’s industry-leading 10-year tank warranty. Order today and enjoy crystal clear pool water for years to come.