🌊 Certikin Vision FVS30T 28″ (710mm) Top Mount Sand Filter – 19m³/hr

Professional-Grade Fibreglass Filtration for Superior Pool Clarity, Season After Season

💧 Product Overview

The Certikin Vision FVS30T is a high-performance 28″ (710mm) 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 filter combines exceptional durability with outstanding filtration performance.

Designed for pools up to 152,000 litres, the FVS30T features Certikin’s innovative clear valve mounting ring that provides a transparent view of filtration and backwashing operations in real-time. The patented 10″ lid design makes maintenance quick and effortless, whilst the hydraulically balanced lateral system ensures optimal flow characteristics during both filtration and backwash cycles.

Backed by an industry-leading 10-year tank warranty for residential installations, the Vision FVS30T represents the perfect balance of performance, reliability, and ease of use for discerning pool owners who demand the best in water quality.

⭐ Key Features

✅ 28″ (710mm) Tank Diameter – Substantial filtration capacity suitable for medium to large pools up to 152,000 litres

✅ 19m³/hr Flow Rate – High-volume water processing for efficient turnover times and rapid filtration

✅ 0.38m² Filter Area – Generous filtration surface for effective particle capture and extended filter cycles

✅ Bobbin Wound Fibreglass Construction – Latest winding technology provides exceptional strength and long-term durability

✅ Patented 10″ Lid – Quick-access design for simple servicing and media inspection without specialist tools

✅ Clear Valve Mounting Ring – Transparent viewing window allows visual monitoring of filtration and backwash performance

✅ 6-Way Multiport Valve Included – Complete with 1.5″ and 50mm quick-connect unions for versatile installation

✅ Hydraulically Balanced Laterals – Optimised water distribution maximises filtration efficiency and flow rates

✅ Automatic Internal Air Bleed – Self-venting system expels trapped air for consistent performance

✅ Integrated Pressure Gauge – Easy monitoring of filter condition for timely maintenance

✅ 10-Year Tank Warranty – Comprehensive residential warranty demonstrates manufacturer confidence in quality

✅ CE Certified – Meets European safety and quality standards for peace of mind

🔧 Technical Specifications

Specification	Value
Model	FVS30T
Manufacturer	Certikin
Filter Type	Top Mount Sand Filter
Pool Capacity	Up to 152,000 litres (8-hour turnover)
Flow Rate	19 m³/hr
Filter Area	0.38 m²
Filtration Rating	20-40 microns (with silica sand)
Tank Diameter	710mm (28″)
Overall Height	Approximately 850mm (with valve)
Media Capacity	200 kg (silica sand)
Maximum Working Pressure	2.5 bar
Inlet/Outlet Size	1.5″ / 50mm
Tank Material	Bobbin Wound Fibreglass
Valve Type	6-Way Multiport (Top Mount)
Warranty (Tank)	10 years (residential)
Warranty (Components)	1 year

⚠️ Important Note: Vision filters are NOT compatible with Baquacil sanitiser systems. Please use chlorine or alternative sanitisers.

📏 Pool Sizing Guide

Sizing Principle: Your filter’s flow rate should turn over your entire pool volume within 6-8 hours for optimal water clarity and hygiene.

Formula:

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

Pool Size Compatibility

Pool Type	Volume Range	Suitability
🏠 Medium Above-Ground	30,000-60,000 L	Excellent – Ideal match
🏠 Large Above-Ground	60,000-90,000 L	Excellent – Comfortable capacity
🏊 Small In-Ground	Up to 75,000 L	Excellent – Generous headroom
🏊 Medium In-Ground	75,000-114,000 L	Very Good – Optimal performance
🏊 Large In-Ground	114,000-152,000 L	Good – Suitable with 8-hour turnover

This Filter’s Capacity

📍 Flow Rate: 19 m³/hr
📍 Ideal Pool Size: 60,000-114,000 litres (6-hour turnover)
📍 Maximum Pool Size: 152,000 litres (8-hour turnover)

Example Calculation:

• Pool volume: 100,000 litres (100 m³)
• With FVS30T (19 m³/hr): 100 ÷ 19 = 5.3 hours turnover ✅ Excellent

🛠️ Installation Requirements

Plumbing Specifications

Requirement	Specification
Inlet Connection	1.5″ / 50mm
Outlet Connection	1.5″ / 50mm
Valve Position	Top Mount
Quick Connect	1.5″ and 50mm unions included

Physical Installation

Requirement	Details
Base	Solid, level concrete pad or paving recommended
Clearance Above	Minimum 500mm for valve operation and lid access
Clearance Around	Minimum 300mm for maintenance access
Location	Below pool water level preferred for optimal priming

Pump Compatibility

⚠️ Important: The filter must be correctly matched with an appropriate pump for optimal performance.

Pump Specification	Recommended
Minimum Flow Rate	12 m³/hr
Optimal Flow Rate	14-19 m³/hr
Maximum Flow Rate	19 m³/hr

💡 Tip: Never exceed the filter’s maximum flow rate. An oversized pump will push particles through the sand bed, reducing filtration quality and potentially damaging the filter internals.

🔄 Maintenance Guide

Routine Maintenance Schedule

Task	Frequency	Method
Check pressure gauge	Weekly	Record baseline reading; monitor for increases
Backwash filter	When pressure rises 0.5-0.7 bar above baseline	Backwash until sight glass runs clear (typically 2-3 minutes)
Rinse after backwash	After every backwash	Run on “Rinse” for 30-60 seconds to settle sand bed
Inspect O-rings and seals	Seasonally	Check for wear, cracks; lubricate or replace as needed
Check sand level	Annually	Top up if level has dropped below normal
Full media change	Every 5-7 years	Replace entire sand bed for optimal performance

Pressure Gauge Guide

📊 Clean Filter Baseline: Record pressure when filter is clean (typically 0.5-1.0 bar)
📊 Backwash Required: When pressure reads 0.5-0.7 bar above baseline
📊 Maximum Safe Pressure: 2.5 bar – do not exceed

⚠️ Warning: If pressure remains high after backwashing, this may indicate channelling in the sand bed, clogged laterals, or the need for media replacement.

Winterisation (UK Climate)

For outdoor installations in the UK, proper winterisation is essential:

1. Lower water level below skimmer and return fittings
2. Set valve to “Winterise” position if available, or disconnect pipework
3. Drain filter tank completely – remove drain plug at tank base
4. Remove and store drain plug safely to prevent moisture retention
5. Cover filter unit or store in frost-free location if possible
6. Protect exposed pipework with lagging or drain completely

⚠️ 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	Lifespan	Benefits
Silica Sand (#16-20)	20-40 microns	5-7 years	Economical, proven performance, easy to source
Glass Media	5-15 microns	10+ years	Superior clarity, reduced backwashing, eco-friendly
ZeoSand/Zeolite	3-5 microns	5 years	Exceptional particle capture, ammonia reduction

Media Capacity

This filter requires: 200 kg of filter media

Recommended Grade: #16 or #20 silica sand (0.45-0.85mm grain size)

Signs Your Media Needs Replacing

• Poor water clarity despite correct chemical balance
• Short filter cycles between backwashes
• Cloudy water returning to pool through jets
• Visible channelling or hardening of sand bed
• Sand appearing in pool (indicates damaged laterals)
• Filter over 7 years old with original sand

💡 Tip: Consider upgrading to glass media when replacing sand – it provides finer filtration, requires less backwashing, and lasts significantly longer.

🔬 Filtration Performance

Metric	Value
Filtration Rating	20-40 microns (with silica sand)
Filter Area	0.38 m²
Flow Rate	19 m³/hr

Micron Rating Guide

Rating	What It Removes
40+ microns	Visible debris: leaves, insects, large particles
20-40 microns	Sand, dirt, most visible particles, hair
10-20 microns	Fine particles, some algae spores
5-10 microns	Very fine particles, most algae, pollen
Under 5 microns	Microscopic particles, bacteria (partial)

💡 Enhancement Tip: To improve filtration below 20 microns, consider using glass media or adding a small amount of DE powder after backwashing.

---

⚙️ Valve Positions & Functions

The included 6-way multiport valve provides complete control over your filtration system:

Position	Function	When to Use
Filter	Normal filtration mode	Day-to-day operation
Backwash	Reverses water flow to flush debris from sand	When pressure rises 0.5-0.7 bar above baseline
Rinse	Settles sand bed and clears pipework	After every backwash (30-60 seconds)
Waste	Bypasses filter, sends water to drain	Vacuuming heavy debris, lowering water level
Recirculate	Bypasses filter, returns water to pool	Distributing chemicals, clearing air from system
Closed	Stops all water flow	Maintenance, winterisation, pump off periods

⚠️ Important: Always turn off the pump before changing valve positions to prevent damage to the valve seals and internal components.

🎯 Ideal Applications

Application	Pool Size	Suitability
🏠 Large Residential Above-Ground	Up to 90,000 L	Excellent
🏠 Medium Residential In-Ground	60,000-100,000 L	Excellent
🏠 Large Residential In-Ground	100,000-152,000 L	Very Good
🏊 Swim Spas	Up to 30,000 L	Excellent (may be oversized)
🏢 Small Commercial	Up to 100,000 L	Good (check local regulations)

❓ Frequently Asked Questions

Q: What size pool will this filter handle?
A: The FVS30T is suitable for pools up to 152,000 litres with an 8-hour turnover, or ideally 114,000 litres for a 6-hour turnover. With a flow rate of 19 m³/hr, it’s perfect for medium to large residential pools.

Q: How often do I need to backwash?
A: Backwash when the pressure gauge reads 0.5-0.7 bar above your clean filter baseline. This is typically every 1-2 weeks during the swimming season, but varies based on pool usage and environmental factors.

Q: What filter media should I use?
A: The filter is compatible with silica sand (#16-20 grade), glass media, or zeolite. Media capacity is 200 kg. Glass media offers improved filtration down to 5-15 microns and lasts longer than sand.

Q: How long does filter media last?
A: Silica sand typically lasts 5-7 years. Glass media can last 10+ years. ZeoSand/zeolite typically lasts 5 years. Replace when you notice reduced water clarity or short filter cycles despite proper backwashing.

Q: What pump do I need?
A: Match with a pump delivering 14-19 m³/hr for optimal performance. The pump should never exceed 19 m³/hr as this can force particles through the sand bed and reduce filtration quality.

Q: What warranty is included?
A: The filter comes with a 10-year full tank warranty for residential installations and a 1-year warranty on all other components including the multiport valve. Contact Parts4Tubs for full warranty terms.

Q: Can I use Baquacil with this filter?
A: No. Vision filters are NOT compatible with Baquacil sanitiser. Please use chlorine, bromine, or salt chlorinator systems.

Q: How do I know when to replace the sand?
A: Replace when you notice: consistently poor water clarity despite correct chemistry, very short filter cycles, visible channelling in the sand bed, or the sand is over 7 years old.

Q: What maintenance is required during winter?
A: Drain the filter completely, remove the drain plug, and store in a frost-free location if possible. Never leave water in the filter during freezing weather as ice expansion can crack the tank.

Q: Does the filter come with everything I need?
A: Yes, the filter includes the tank, 6-way multiport valve with 1.5″/50mm quick-connect unions, pressure gauge, and air relief valve. Filter media (sand) is sold separately.

📥 Downloads & Resources

📄 Installation & Owners Manual – Complete installation and operating instructions

📄 Product Brochure – Full specifications and technical data

🏆 Why Choose the Certikin Vision FVS30T

✅ Superior Build Quality – Bobbin wound fibreglass construction delivers exceptional strength and longevity that outlasts standard injection-moulded filters

✅ Optimal Filtration Performance – 0.38m² filter area with hydraulically balanced laterals ensures efficient particle capture and consistent water clarity

✅ Easy Maintenance – Patented 10″ lid and clear valve mounting ring make servicing quick and simple without specialist tools

✅ Perfect for Large Pools – 19 m³/hr flow rate comfortably handles pools up to 152,000 litres with efficient turnover times

✅ Outstanding Value – Professional-grade features at a competitive price point deliver excellent long-term value

✅ Industry-Leading Warranty – 10-year tank warranty for residential use demonstrates Certikin’s confidence in their product quality

✅ Trusted Brand – Certikin has been a leading UK pool equipment supplier for over 50 years, now part of the global Fluidra group

🤝 Why Buy From Parts4Tubs

✅ UK-Based Company – Local support from pool specialists who understand UK pools and climate

✅ Fast UK Delivery – Quick dispatch to get your pool running smoothly

✅ Expert Advice – Dedicated team available to help with sizing, installation, and technical queries

✅ Competitive Pricing – Great value on genuine Certikin products

✅ Full Warranty Support – We support all manufacturer warranties and handle any issues directly

✅ Easy Returns – 30-day returns policy for peace of mind purchasing

✅ One-Stop Shop – Compatible filter media, spare parts, and accessories all available

✨ Summary

The Certikin Vision FVS30T is a professional-grade 28″ top mount sand filter delivering 19 m³/hr flow rate for pools up to 152,000 litres. Featuring advanced bobbin-wound fibreglass construction, a patented 10″ quick-access lid, and innovative clear valve mounting ring for visual monitoring, this filter combines exceptional durability with outstanding ease of maintenance. Complete with a 6-way multiport valve, pressure gauge, and backed by a comprehensive 10-year residential tank warranty, the FVS30T represents the ideal choice for pool owners who demand crystal clear water and reliable, long-lasting performance. Order today from Parts4Tubs for fast UK delivery and expert support.