🌊 Certikin Hydroswim ZZ2620/T 20″ Top Mount Sand Filter – 60,000 Litre Capacity

Powerful filtration technology for sparkling clean water, season after season.

💧 Product Overview

The Certikin Hydroswim ZZ2620/T is a premium 20-inch top mount sand filter designed to deliver outstanding water clarity for domestic swimming pools. This complete filtration package includes the filter unit, 6-way multiport valve, and all necessary filter media, making it ready for immediate installation.

Manufactured from high-quality laminated polyester reinforced with glass fibre, this filter offers exceptional durability and corrosion resistance, ensuring years of reliable performance in demanding pool environments. The top mount configuration provides a space-efficient design while the large bolt-down lid allows easy access for media inspection and replacement.

With a flow rate of 10 m³/hr and a filtration area of 0.21 m², the Hydroswim ZZ2620/T is ideally suited for small to medium residential pools up to 60,000 litres. The distinctive yellow housing makes it easily identifiable during maintenance, while the integrated pressure gauge allows for simple monitoring of filter performance.

✨ Key Features

• ✅ Laminated Polyester Construction – Durable polyester resin and glass fibre build provides excellent corrosion resistance and long-lasting performance
• ✅ 6-Way Multiport Valve – Complete control over filtration, backwash, rinse, recirculate, waste, and closed functions from a single valve
• ✅ Top Mount Design – Space-saving vertical configuration ideal for confined plant rooms
• ✅ Complete Media Package – Includes 25 kg gravel and 75 kg sand for immediate installation
• ✅ Integrated Pressure Gauge – Easy monitoring of filter condition to determine when backwashing is required
• ✅ Manual Air Bleed – Prevents air locks and ensures optimal filtration efficiency
• ✅ Large Bolt-Down Lid – Simple access for media inspection, topping up, and replacement
• ✅ 1.5″ Connections – Standard inlet and outlet sizes for compatibility with most domestic pool plumbing
• ✅ High Test Pressure Rating – Each unit tested at 4 bar for 20,000 cycles ensuring reliability
• ✅ 10 m³/hr Flow Rate – Suitable for pools up to 60,000 litres with proper turnover

🔩 Technical Specifications

Specification	Value
Filter Type	Sand Filter
Model Number	ZZ2620/T (HS520/T)
Pool Capacity	Up to 60,000 litres
Flow Rate	10 m³/hr
Filtration Area	0.21 m²
Filtration Velocity	50 m³/h/m²
Filtration Rating	20-40 microns (with sand media)
Tank Diameter	520 mm (20″)
Total Height	1,045 mm
Height to Valve	810 mm
Sand Capacity	75 kg
Gravel Capacity	25 kg
Working Pressure	0.5-1.6 bar (recommended)
Maximum Pressure	2.5 bar
Test Pressure	4 bar
Maximum Temperature	50°C
Inlet/Outlet Size	1.5″ (38 mm)
Tank Material	Laminated polyester (polyester resin & glass fibre)
Valve Type	6-way multiport (top mount)
Weight (Empty)	17 kg
Colour	Yellow

📏 Pool Sizing Guide

Sizing Principle:

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

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 20,000 L	Excellent – oversized for superior clarity
🏠 Medium above-ground	20,000-40,000 L	Excellent – ideal match
🏠 Large above-ground	40,000-60,000 L	Good – suitable with 6-hour turnover
🏊 Small in-ground	Up to 40,000 L	Excellent – ideal match
🏊 Medium in-ground	40,000-60,000 L	Good – suitable with 6-hour turnover
🏊 Large in-ground	60,000+ L	Consider larger Hydroswim model

This Filter:

📍 Flow Rate: 10 m³/hr

📍 Suitable for pools up to: 60,000 litres (with 6-hour turnover)

📍 Optimal for pools: 30,000-50,000 litres

🛠️ Installation Requirements

Plumbing:

Requirement	Specification
Inlet Connection	1.5″ (38 mm)
Outlet Connection	1.5″ (38 mm)
Valve Position	Top mount

Physical Installation:

Requirement	Details
Base	Solid, level concrete pad or paving required
Clearance above	Minimum 500 mm for valve operation and lid removal
Clearance around	Minimum 300 mm for maintenance access
Location	Sheltered, frost-protected area recommended

Pump Compatibility:

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

• Recommended pump flow rate: 8-10 m³/hr
• Pump must not exceed the filter’s maximum flow rate of 10 m³/hr
• Ensure pump head pressure is compatible with system requirements

💡 Tip: Undersizing the pump slightly extends filter cycles between backwashes while maintaining excellent water clarity.

🔄 Maintenance Guide

Routine Maintenance:

Task	When	How
Check pressure gauge	Weekly	Normal operating range: 0.5-1.6 bar
Backwash filter	When pressure rises 0.5 bar above baseline	Run until sight glass clears (typically 2-3 minutes)
Rinse after backwash	After each backwash	30-60 seconds to settle media
Inspect seals and o-rings	Seasonally	Replace if worn, cracked, or compressed
Check media level	Annually	Top up if settled below recommended level
Full media replacement	Every 5-7 years	Replace sand and gravel completely

Pressure Gauge Guide:

📊 Clean filter baseline: 0.5-0.8 bar (note your specific baseline)

📊 Backwash required: 0.5 bar above your baseline

📊 Maximum safe operating: 2.5 bar

⚠️ Warning: Never operate above 2.5 bar. If pressure remains high after backwashing, inspect for blockages or consider media replacement.

Winterisation (UK Climate):

• Drain the filter tank completely via the drain plug
• Remove and store the drain plug safely
• Leave multiport valve in the “Winterise” position if available, or between settings
• Cover the filter or relocate to a frost-free location if possible
• Never leave water in the filter during freezing conditions as ice expansion can crack the tank

🪨 Filter Media Information

Compatible Media:

Media Type	Filtration Rating	Lifespan	Benefits
Silica Sand (#16/30)	20-40 microns	5-7 years	Economical, proven performance
Filter Glass	5-15 microns	10+ years	Finer filtration, lighter weight, eco-friendly
ZeoSand/Zeolite	3-5 microns	5 years	Superior clarity, ammonia reduction

Media Capacity for this filter:

• Gravel (support layer): 25 kg
• Sand (filtration layer): 75 kg
• Total media capacity: 100 kg

💡 Tip: When using glass media, you can typically use 15-20% less by weight than sand while achieving finer filtration.

Signs Media Needs Replacing:

• Poor water clarity despite correct chemical balance
• Short filter cycles between backwashes
• Cloudy water returns to pool after filtration
• Sand appearing in pool (indicates lateral damage)
• Media more than 7 years old

🔬 Filtration Performance

Metric	Value
Filtration Rating (Sand)	20-40 microns
Filtration Rating (Glass)	5-15 microns
Filter Area	0.21 m²
Filtration Velocity	50 m³/h/m²

Micron Rating Guide:

Rating	What It Catches
40+ microns	Visible debris, leaves, large particles
20-40 microns	Sand, dirt, most visible particles
10-20 microns	Fine particles, some algae
5-10 microns	Very fine particles, most algae, improved clarity
3-5 microns	Microscopic particles, exceptional water polish

💡 Tip: Upgrade to glass media to achieve 5-15 micron filtration with this filter, dramatically improving water clarity.

⚙️ Valve Positions & Functions

Position	Function	When to Use
Filter	Normal filtration operation	Daily operation
Backwash	Reverse flow to flush debris from media	When pressure rises 0.5 bar above baseline
Rinse	Settle media and clear pipework	30-60 seconds after every backwash
Waste	Bypass filter, send water directly to drain	Vacuuming heavy debris, lowering water level
Recirculate	Bypass filter, return water to pool	Distributing chemicals, heating water quickly
Closed	Stop all water flow	Servicing pump or filter, winterisation

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

🎯 Ideal Applications

Application	Pool Size	Suitability
🏠 Residential above-ground	Up to 50,000 L	Excellent
🏠 Residential in-ground	Up to 60,000 L	Excellent
🏡 Garden swim spas	Up to 10,000 L	Oversized – superior clarity
🏊 Holiday let pools	Up to 50,000 L	Good – reliable and low maintenance

Not Recommended For:

• Commercial or public pools (consider Hydroswim 760 or larger)
• Pools exceeding 60,000 litres
• High-bather-load applications

❓ Frequently Asked Questions

Q: What size pool will this filter handle?

A: The Hydroswim ZZ2620/T is suitable for pools up to 60,000 litres when achieving a 6-hour turnover. For optimal performance and water clarity, it’s ideal for pools between 30,000 and 50,000 litres.

Q: How often do I need to backwash?

A: Backwash when the pressure gauge reads approximately 0.5 bar above your clean filter baseline. This is typically every 1-2 weeks during swimming season, though frequency varies based on pool usage and environmental factors.

Q: What filter media should I use?

A: This filter is compatible with standard #16/30 silica sand, filter glass, or zeolite media. The total media capacity is 100 kg (25 kg gravel base layer plus 75 kg filtration media).

Q: How long does filter media last?

A: Sand media typically lasts 5-7 years with proper maintenance. Glass media can last 10+ years and provides finer filtration. Zeolite offers the finest filtration but should be replaced every 5 years.

Q: What pump do I need?

A: Match with a pump delivering 8-10 m³/hr. The pump flow rate should not exceed the filter’s maximum capacity of 10 m³/hr. Common compatible pumps include the Certikin Aquaspeed or similar 0.5-0.75 HP models.

Q: Is the filter media included?

A: Yes, the ZZ2620/T package includes 25 kg of gravel and 75 kg of sand, ready for immediate installation.

Q: What warranty is included?

A: Please contact Parts4Tubs for full warranty terms and conditions.

Q: Can I use this filter for a hot tub?

A: While technically compatible, sand filters are typically oversized for hot tubs. A cartridge filter system is usually more appropriate for hot tub applications.

Q: How do I winterise this filter?

A: Drain the tank completely, remove the drain plug for storage, and either cover the filter or move it to a frost-free location. Never leave water in the filter during freezing conditions.

Q: What is the filtration rating?

A: With standard sand media, filtration is 20-40 microns. Upgrading to glass media improves this to 5-15 microns for noticeably clearer water.

📥 Downloads & Resources

📄 Hydroswim Product Brochure – Full specifications and range overview

🏆 Why Choose the Certikin Hydroswim ZZ2620/T

• ✅ Proven Filtration Performance – Delivers crystal clear water with 20-40 micron filtration, upgradeable to 5-15 microns with glass media
• ✅ Robust Construction – Laminated polyester with glass fibre reinforcement resists corrosion and UV degradation
• ✅ Complete Package – Includes filter, valve, pressure gauge, and all necessary media for immediate installation
• ✅ Easy Maintenance – 6-way multiport valve and large bolt-down lid simplify routine servicing
• ✅ Ideal Sizing – Perfect for domestic pools up to 60,000 litres
• ✅ Trusted Brand – Certikin is a leading name in UK pool equipment with decades of proven reliability
• ✅ Rigorous Testing – Each unit pressure tested at 4 bar for 20,000 cycles

🤝 Why Buy from Parts4Tubs

• ✅ UK-based company with local support
• ✅ Fast UK delivery
• ✅ Expert advice from pool and spa specialists
• ✅ Competitive pricing
• ✅ Full warranty support
• ✅ Easy returns within 30 days
• ✅ Compatible filter media and spare parts available
• ✅ Replacement multiport valves, pressure gauges, and seals in stock

💫 Summary

The Certikin Hydroswim ZZ2620/T is a reliable, high-quality 20-inch top mount sand filter ideal for domestic swimming pools up to 60,000 litres. Complete with 6-way multiport valve, pressure gauge, and 100 kg of filter media included, this filter delivers excellent water clarity with minimal maintenance. The durable laminated polyester construction ensures years of trouble-free operation, while the space-saving top mount design makes it perfect for compact plant rooms. Order today from Parts4Tubs for fast UK delivery and expert support.