💦 Pentair Azur 19″ Sand Filter with FreeFlo 0.5hp Pump Pack – 36,000 Litre Capacity

Superior filtration performance for medium-sized pools, delivering crystal-clear water all season long

📋 Product Overview

The Pentair Azur 19″ Sand Filter with FreeFlo 0.5hp Pump Pack delivers powerful, efficient filtration for medium-sized above-ground and in-ground swimming pools up to 36,000 litres. This complete filtration system pairs Pentair’s robust 19″ Azur sand filter with their reliable FreeFlo FFL-051 pump, providing everything needed to maintain pristine pool water throughout the swimming season.

Manufactured using Pentair’s unique blow-moulding process, the Azur filter features a one-piece, extra-thick non-corrosive polyethylene tank that offers exceptional strength and durability. The integrated FreeFlo FFL-051 pump delivers consistent water circulation with a 13 m³/h maximum capacity, self-priming design, built-in thermal protection, and large strainer basket for reduced maintenance. Pre-mounted on a unified base plate with 50mm swivel union connections, this system offers quick, hassle-free installation—simply add filter media, connect to your pool, and enjoy sparkling water.

As one of the world’s best-selling pool filtration systems, this Pentair combination represents over 40 years of pool equipment innovation. The 19″ filter with 0.18 m² filter area and 9 m³/h design flow rate provides the ideal balance of filtration capacity and efficiency for pools requiring more robust water treatment than smaller systems can provide.

✨ Key Features

✅ Complete Plug-and-Play System – Pre-assembled filter and pump on unified base with all hardware included for fast, easy installation

✅ 9 m³/h Design Flow Rate – Optimised circulation for pools up to 36,000 litres with recommended 6-8 hour turnover

✅ 0.18 m² Filter Area – Larger filtration surface than 15″ models for improved debris capture and longer cycles between backwashing

✅ One-Piece Blow-Moulded Tank – Extra-thick polyethylene construction resists corrosion, UV degradation, and chemical damage

✅ Praher 6-Way ABS Multiport Valve – Premium valve with filter, backwash, rinse, waste, recirculate, and closed positions

✅ Powerful FreeFlo FFL-051 Pump – 0.5hp (0.37kW) self-priming mono-block design with 13 m³/h maximum capacity

✅ Large Self-Aligning Strainer Basket – HDPE construction holds debris and extends service intervals between cleaning

✅ 50mm Swivel Union Connections – Quick-connect fittings enable easy installation, servicing, and winterisation

✅ 90° Rotatable Pump Discharge – Flexible positioning suits any installation configuration

✅ Transparent Cam & Ramp™ Pump Lid – Easy visual inspection of strainer basket without complete disassembly

✅ 1.5m Power Cable with RCD Option – Ready to connect with residual current device available for enhanced electrical safety

✅ Pressure Gauge Fitted – 1/4″ NPT bottom connection gauge monitors filter condition at a glance

✅ Variable Speed Drive Compatible – Pump prepared for VSD connection for future energy-saving upgrades

✅ Saltwater Compatible – All components resistant to saltwater pool environments

✅ Comprehensive Warranty – 5 years on filter vessel, 2 years on pump, 1 year on valve

⚙️ Technical Specifications

Complete System Specifications

Specification	Value
Product Type	Sand filter and pump combination pack
Suitable For	Above-ground and in-ground pools
Pool Capacity	Up to 36,000 litres
Design Flow Rate	9 m³/h
Maximum Pump Capacity	13 m³/h
Overall Dimensions	760 x 600 x 900 mm (L x W x H)
Total Weight (Empty)	Approximately 40 kg
Inlet/Outlet Connections	50 mm (1.5″) swivel glue socket unions
Power Supply	230V / 50Hz single phase
Cable Length	1.5 m (with plug)
Manufacturer Code	FS-19A6-FF12 / 0181791

Filter Specifications (Azur 19″)

Specification	Value
Filter Type	Top-mount sand filter
Filter Diameter	475 mm (19″)
Filter Area	0.18 m²
Maximum Flow Rate	9 m³/h
Media Capacity (Sand)	65 kg (0.4-0.8 mm grade)
Gravel Bed Required	15 kg (3-5 mm grade)
Tank Material	Extra-thick blow-moulded polyethylene
Maximum Working Pressure	2.0 bar
Maximum Working Temperature	35°C
Valve Type	Praher 6-way multiport (ABS)
Valve Connection	1.5″ (50 mm)
Drain Port	Large diameter for easy winterisation
Filter Empty Weight	18 kg
Filter Vessel Warranty	5 years
Valve Warranty	1 year

Pump Specifications (FreeFlo FFL-051)

Specification	Value
Pump Model	FreeFlo FFL-051
Pump Type	Self-priming centrifugal
Motor Design	Mono-block integral
Power Output	0.37 kW (0.5 hp)
Power Consumption	0.56 kW
Maximum Pump Capacity	13 m³/h
Capacity at Low Resistance	11 m³/h
Capacity at Medium Resistance	11 m³/h
Capacity at High Resistance	7.0 m³/h
Motor Speed	2800 rpm @ 50Hz
Motor Type	TEFC (Totally Enclosed Fan Cooled)
Protection Class	IP44
Insulation Class	F
Thermal Protection	Built-in automatic cutoff
Pump Dimensions	640 x 230 x 320 mm (L x W x H)
Pump Weight	7 kg
Connection Size	50 mm
Self-Priming	Yes (up to 2m lift)
Saltwater Resistant	Yes
Variable Speed Drive Ready	Yes
Noise Level	>70 dB(A) at 1 metre
Pump Warranty	2 years (in set)

Pool Capacity by Resistance Level

Resistance Level	Maximum Pool Volume	Typical Scenario
Low Resistance	52,000 litres	Short pipework run (<5m), minimal fittings
Medium Resistance	44,000 litres	Standard installation (5-10m), moderate fittings
High Resistance	28,000 litres	Longer pipework (>10m), multiple fittings

📦 What’s Included in the Box

This complete filtration pack includes everything needed for installation:

Item	Quantity	Description
Unified Platform Base	1	Pre-mounted base plate for filter and pump
Azur Blow-Moulded Filter Shell	1	19″ (475mm) polyethylene tank
FreeFlo FFL-051 Pump	1	0.5hp single phase with plug
6-Way Multiport Valve	1	Praher ABS 1.5″ top-mount
Pressure Gauge	1	1/4″ NPT bottom connection
Filter Laterals	6	Distribution nozzles for sand bed
Lateral Hub	1	Central manifold for laterals
Grey PVC Pipe	1	Ø50 x 1.8mm internal standpipe
Drain Kit	1	Complete with drain plug
Sand Guide	1	For correct media filling
O-Ring	1	NBR 70 shore Ø50 x 2.5mm for valve seal
Clamp Ring	1	Stainless steel hardware for valve mounting
Connecting Hose	1	Inside diameter 38mm
Hose Nozzles	2	PVC Ø38 x 1.5″ BSP
Hose Clamps	2	Stainless steel
Hardware Kit	1	Screws, nuts, and fasteners
Installation Manual	1	Multi-language instructions

⚠️ Not Included: Filter media (sand and gravel) must be purchased separately.

📐 Pool Sizing Guide

Proper filter sizing ensures your pool water is fully circulated and cleaned within the recommended 6-8 hour turnover period. This maintains optimal water clarity and hygiene whilst reducing chemical consumption.

Sizing Formula:

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

Example Calculations:

Pool Volume	6-Hour Turnover	8-Hour Turnover
18,000 L (18 m³)	3.0 m³/h needed	2.25 m³/h needed
27,000 L (27 m³)	4.5 m³/h needed	3.4 m³/h needed
36,000 L (36 m³)	6.0 m³/h needed	4.5 m³/h needed
45,000 L (45 m³)	7.5 m³/h needed	5.6 m³/h needed
54,000 L (54 m³)	9.0 m³/h needed	6.75 m³/h needed

Pool Size Compatibility:

Pool Type	Volume Range	Suitability	Notes
🏊 Medium above-ground	20,000-30,000 L	✅ Excellent	Achieves fast 4-5 hour turnover
🏊 Large above-ground	30,000-40,000 L	✅ Excellent	Achieves optimal 6-hour turnover
🏠 Small in-ground	Up to 30,000 L	✅ Excellent	Superior turnover with headroom
🏠 Medium in-ground	30,000-45,000 L	✅ Very good	Achieves 6-8 hour turnover
🏠 Large in-ground	45,000-54,000 L	⚠️ Adequate	Maximum recommended capacity
🏊 Intex/Bestway XL	25,000-40,000 L	✅ Ideal	Perfect upgrade from cartridge

This Filter Pack:

📍 Design Flow Rate: 9 m³/h
📍 Maximum Pump Capacity: 13 m³/h
📍 Recommended Pool Size: Up to 36,000 litres (medium resistance)
📍 Maximum Pool Size: Up to 52,000 litres (low resistance)
📍 Optimal Turnover: 6-8 hours

💡 Pro Tip: For pools at the upper capacity limit, running the filtration system for 10-12 hours daily will maintain excellent water quality. The pump’s efficient design keeps running costs manageable even with extended operation.

🔌 Installation Requirements

Pre-Installation Checklist

Before installation, ensure you have:

• [ ] Solid, level surface for equipment placement
• [ ] Adequate drainage for backwash water
• [ ] 230V electrical supply within 1.5m (or extension available)
• [ ] 65kg filter sand (0.4-0.8mm grade)
• [ ] 15kg gravel (3-5mm grade)
• [ ] PVC glue for permanent pipe connections
• [ ] PTFE tape for threaded connections

Plumbing Connections

Requirement	Specification
Inlet Connection	50 mm (1.5″) swivel glue socket union
Outlet Connection	50 mm (1.5″) swivel glue socket union
Valve Position	Top-mounted 6-way
Connection Type	Glue socket or hose connection
Included Hose Fittings	Ø38mm hose nozzles with clamps

Physical Installation Requirements

Requirement	Details
Base	Solid, level concrete or paving slab
Location	Sheltered area with ventilation
Clearance Above	Minimum 500 mm for valve operation and lid removal
Clearance Around	Minimum 300 mm for maintenance access
Maximum Suction Lift	2 metres (self-priming limit)
Optimal Pump-to-Pool Distance	5-10 metres
Ambient Temperature	Do not install in frost-prone locations

Electrical Requirements

Requirement	Specification
Supply Voltage	230V AC, 50Hz, single phase
Power Consumption	0.56 kW
Cable Length	1.5 m (with plug fitted)
Protection	RCD recommended (available as option)
Earthing	Must be properly earthed

Pipework Guidelines

• Minimise the number of elbows and bends to reduce pressure loss
• Use direct, short suction lines with continuous slope to pool
• Ensure suction line is at least 50mm diameter (same as pump inlet)
• All suction lines must be airtight to prevent priming issues
• Support pipework adequately to prevent stress on connections

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🪨 Filter Media Installation

Media Layering (Critical for Proper Filtration)

The filter requires two layers of media installed in the correct order:

Layer 1: Gravel Bed (Bottom)

Specification	Value
Media Type	Gravel/pea shingle
Grain Size	3-5 mm diameter
Quantity Required	15 kg
Purpose	Supports sand bed, prevents lateral clogging

Layer 2: Filter Sand (Top)

Specification	Value
Media Type	Pool filter sand (silica)
Grain Size	0.4-0.8 mm (fine grade)
Quantity Required	65 kg
Purpose	Primary filtration medium

Installation Procedure

1. Inspect laterals – Check all 6 filter nozzles are secure and undamaged
2. Fill tank 1/3 with water – Protects laterals during media filling
3. Position sand guide – Place over central pipe to direct sand away from laterals
4. Add gravel first – Pour 15kg evenly around the laterals
5. Add sand on top – Pour 65kg evenly, keeping sand guide in place
6. Remove sand guide – Lift out carefully
7. Level media surface – Ensure even distribution
8. Leave 150mm freeboard – Space for bed expansion during backwash

⚠️ Critical: Never operate the filter without both gravel and sand correctly installed. Running without media will damage the laterals and void the warranty.

Alternative Filter Media Options

Media Type	Filtration Rating	Quantity Needed	Lifespan	Benefits
Pool Sand (0.4-0.8mm)	20-40 microns	65 kg	5-7 years	Economical, proven performance
Filter Glass	5-15 microns	55 kg	10-15 years	Finer filtration, longer lasting, eco-friendly
Glass Beads	10-20 microns	49 kg	10+ years	Excellent clarity, lighter weight
Filter Balls	10-15 microns	1,820 grams	3-5 years	Ultra-lightweight, easy handling
ZeoSand	3-5 microns	55 kg	5 years	Superior clarity, ammonia reduction

💡 Upgrade Recommendation: Switching from sand to glass media improves filtration from 20-40 microns down to 5-15 microns, providing noticeably clearer water with approximately 15% less media required.

🔬 Filtration Performance

Metric	Value
Filter Area	0.18 m²
Design Flow Rate	9 m³/h
Filtration Rating (sand)	20-40 microns
Filtration Rating (glass)	5-15 microns
Bed Depth	Approximately 400mm

Micron Rating Guide – What Gets Captured:

Rating	Particles Removed	Visibility
100+ microns	Leaves, large debris	Clearly visible
40-100 microns	Hair, large dirt particles	Visible to eye
20-40 microns	Sand, fine dirt, suspended particles	Barely visible
10-20 microns	Fine particles, pollen, some algae	Microscopic
5-10 microns	Very fine particles, most algae spores	Requires microscope
<5 microns	Bacteria, finest particles	Invisible

Filtration Efficiency Factors:

• Regular backwashing maintains optimal flow through media
• Chemical balance affects particle aggregation (flocculants improve capture)
• Longer filtration run times improve overall water clarity
• Fresh media provides best filtration performance
• Larger filter area (0.18 m²) allows more debris capture before backwashing

🛠️ Valve Positions & Functions

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

Position	Function	Water Flow	When to Use
FILTER	Normal filtration	Pool → Pump → Top of filter → Through media → Bottom → Back to pool	Daily operation, standard filtration
BACKWASH	Reverse flush to clean media	Pool → Pump → Bottom of filter → Up through media → Waste	When pressure rises 0.3-0.5 bar above baseline
RINSE	Settle and clear after backwash	Pool → Pump → Top of filter → Through media → Waste	30-60 seconds after every backwash
WASTE	Bypass filter to drain	Pool → Pump → Direct to waste	Lowering water level, vacuuming heavy debris
RECIRCULATE	Bypass filter to pool	Pool → Pump → Direct back to pool	Distributing chemicals, heating circulation
CLOSED	All ports blocked	No flow	Pump maintenance, inspection, winterisation

⚠️ Critical Operating Rules:

1. Always switch off the pump before changing valve positions
2. Never operate the pump with valve in between positions
3. Allow pump to fully stop before moving valve handle
4. Lubricate valve O-ring annually with silicone grease

🔄 Maintenance Guide

Routine Maintenance Schedule

Task	Frequency	Procedure	Notes
Check pressure gauge	Weekly	Record baseline reading when clean	Normal range 0.5-1.0 bar
Empty pump strainer basket	Weekly	Switch off pump, open lid, remove debris, rinse	Check lid O-ring condition
Backwash filter	Every 1-2 weeks	Run until sight glass clears (2-3 mins)	When pressure rises 0.3-0.5 bar above baseline
Rinse after backwash	After every backwash	Run for 30-60 seconds	Settles media, clears dirty water
Lubricate pump lid O-ring	Monthly	Apply thin coat of silicone grease	Prevents cracking and air leaks
Inspect pump lid seal	Monthly	Check for cracks, flattening, deterioration	Replace if worn
Check all unions	Monthly	Ensure hand-tight, check for leaks	Do not overtighten
Inspect filter media	Annually	Check level, condition, channelling	Top up if settled significantly
Service multiport valve	Annually	Lubricate O-rings, check spider gasket	Replace gaskets if cracked
Full media replacement	Every 5-7 years (sand)	Empty tank, replace with fresh media	Glass media: 10-15 years

Pressure Gauge Guide

📊 Clean filter baseline: 0.5-1.0 bar (typical)
📊 Normal operating range: 0.8-1.4 bar
📊 Backwash trigger: 0.3-0.5 bar above your baseline
📊 Caution zone: 1.5-2.0 bar
📊 Maximum safe operating: 2.0 bar

⚠️ If pressure exceeds 2.0 bar, stop pump immediately and investigate.

Causes of High Pressure:

• Dirty filter media needing backwash
• Blocked return line or closed valve
• Damaged laterals allowing sand bypass
• Media clumping or channelling
• Valve spider gasket failure

Causes of Low Pressure:

• Air leak on suction side
• Clogged pump strainer basket
• Low water level in pool
• Blocked skimmer or suction line
• Pump impeller damage

Backwash Procedure (Step-by-Step)

1. Switch off pump – Allow to fully stop
2. Set valve to BACKWASH – Push handle down, rotate to position
3. Switch on pump – Run for 2-3 minutes
4. Monitor sight glass – Continue until water runs clear
5. Switch off pump – Allow to fully stop
6. Set valve to RINSE – Rotate handle to position
7. Switch on pump – Run for 30-60 seconds
8. Switch off pump – Allow to fully stop
9. Set valve to FILTER – Return to normal operation
10. Switch on pump – Resume filtration
11. Check pressure gauge – Should return to baseline

💡 Water Loss Note: Each backwash cycle uses approximately 300-400 litres of pool water due to the larger filter size. Top up as needed after backwashing.

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❄️ Winterisation Guide (Essential for UK Climate)

Proper winterisation prevents frost damage and extends equipment life.

Complete Winterisation Procedure

Step 1: Final Filtration

• Run filter for 24 hours with shock chlorine dose
• Backwash and rinse thoroughly
• Allow pump to run for 5 minutes after rinse

Step 2: Drain the Filter

• Switch off pump and isolate electrical supply
• Set valve to CLOSED position
• Remove drain plug from filter base
• Allow filter tank to drain completely (15-20 minutes for larger tank)
• Tilt tank slightly if needed to remove all water

Step 3: Drain the Pump

• Open pump lid and remove strainer basket
• Locate and remove pump drain plugs (front and rear)
• Allow pump housing to drain completely
• Leave drain plugs out during storage

Step 4: Drain the Valve

• Loosen valve unions if accessible
• Allow any trapped water to escape
• Leave connections loose over winter

Step 5: Protect Equipment

• Store all removed plugs and fittings in strainer basket
• Place strainer basket inside pump housing
• Cover entire unit with weatherproof tarpaulin
• If possible, move to frost-free location (garage, shed)

Step 6: Pipework

• Drain all external pipework
• Disconnect unions where possible
• Use pipe plugs or caps on open ends

Critical Winter Warnings

⚠️ Never leave water in the filter or pump during freezing conditions

• Ice expansion will crack the filter tank
• Frozen water will destroy pump seals and impeller
• Frost damage is NOT covered by warranty

⚠️ Do not run the pump if there is any risk of freezing

• Water in pipework can freeze within hours
• A single freeze event can cause irreparable damage

⚠️ If unit cannot be moved indoors:

• Ensure complete drainage of all components
• Use insulation wrapping as additional protection
• Check regularly during cold spells

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🔧 Troubleshooting Guide

Common Issues and Solutions

Problem	Possible Cause	Solution
Pump won’t prime	Air leak on suction side	Check all unions and lid seal for air tightness
	Strainer basket full	Clean strainer basket
	Water level too low	Top up pool water
	Suction lift too high	Reposition pump below water level
Low flow rate	Dirty filter media	Backwash thoroughly
	Blocked strainer basket	Clean basket
	Air lock in system	Bleed air from pump lid
	Partially closed valve	Check valve position
High pressure	Dirty filter	Backwash and rinse
	Blocked return line	Clear obstruction
	Damaged spider gasket	Replace valve gasket
Sand in pool	Damaged lateral	Inspect and replace lateral
	Cracked standpipe	Replace internal pipework
	Overfilled filter	Remove excess sand
Pump overheating	Blocked ventilation	Clear around motor
	Running dry	Check water level
	Thermal protection activated	Allow to cool, check for blockages
Noisy operation	Cavitation (air in water)	Check for suction air leaks
	Worn bearings	Professional service required
	Loose mountings	Tighten base fixings
Cloudy water despite filtration	Chemical imbalance	Test and balance water chemistry
	Insufficient run time	Increase daily filtration hours
	Worn filter media	Replace sand/media
	Algae problem	Shock treat and brush pool

When to Seek Professional Help

Contact a pool professional if:

• Pump motor fails to start or trips electrics repeatedly
• Major water leak from tank or pump body
• Unusual burning smell from motor
• Visible cracks in filter vessel
• Repeated priming failures after all checks

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🏠 Ideal Applications

Application	Pool Size	Suitability	Notes
🏊 Medium above-ground pools	25,000-40,000 L	✅ Ideal	Designed specifically for this range
🏊 Large above-ground pools	40,000-50,000 L	✅ Very good	Excellent with moderate pipework
🏠 Small in-ground pools	Up to 35,000 L	✅ Excellent	Superior turnover capacity
🏠 Medium in-ground pools	35,000-45,000 L	✅ Good	Reliable performance
🏊 Intex Ultra XTR pools	26,000-42,000 L	✅ Perfect	Significant upgrade from cartridge
🏊 Bestway Power Steel pools	20,000-40,000 L	✅ Excellent	Professional-grade filtration

Best Suited For:

• Pool owners with medium-sized pools requiring robust filtration
• Above-ground pool installations needing higher flow rates
• Permanent in-ground pools up to 45,000 litres
• Upgrading from undersized or cartridge filtration systems
• DIY installers appreciating plug-and-play simplicity
• Seasonal pools requiring easy winterisation

Not Recommended For:

• Commercial or public swimming pools
• Pools exceeding 55,000 litres
• Installations requiring flow rates above 13 m³/h
• Pools with extensive pipework runs (>15 metres)

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❓ Frequently Asked Questions

Sizing & Compatibility

Q: What size pool will this filter handle? A: This system is designed for pools up to 36,000 litres at medium resistance, or up to 52,000 litres with very short, direct pipework (low resistance). With a design flow rate of 9 m³/h and maximum pump capacity of 13 m³/h, it achieves the recommended 6-8 hour complete water turnover for optimal filtration.

Q: How does the 19″ filter compare to the 15″ model? A: The 19″ filter offers 64% more filter area (0.18 m² vs 0.11 m²), 50% higher flow rate (9 m³/h vs 6 m³/h), and handles pools up to 52,000 litres versus 46,000 litres. It requires more sand (65kg vs 30kg) but provides longer cycles between backwashing and better performance for larger pools.

Q: Is this suitable for saltwater pools? A: Yes, all components including the pump housing, filter tank, and valve are resistant to saltwater pool environments up to standard chlorinator salt levels (typically 3,000-6,000 ppm).

Filter Media

Q: What filter media should I use? A: The filter requires 15kg of gravel (3-5mm) as a base layer, plus 65kg of filter sand (0.4-0.8mm). Alternatively, use 55kg of filter glass for improved filtration performance.

Q: How long does filter media last? A: Standard pool sand typically lasts 5-7 years with proper maintenance. Glass media can last 10-15 years. Replace earlier if water clarity deteriorates despite correct chemical balance and regular backwashing.

Q: Is filter media included? A: No, filter media is sold separately. This allows you to choose your preferred media type based on your filtration requirements and budget.

Operation & Maintenance

Q: How often do I need to backwash? A: Backwash when the pressure gauge reads 0.3-0.5 bar above your clean baseline reading. This typically occurs every 1-2 weeks during normal use, though frequency increases with heavy bather loads, algae issues, or high debris levels.

Q: What’s the normal pressure gauge reading? A: A clean filter typically shows 0.5-1.0 bar. Normal operating range is 0.8-1.4 bar. Backwash when pressure rises to 1.3-1.5 bar (0.3-0.5 bar above your specific baseline).

Q: Can I run the pump 24/7? A: Yes, the pump is designed for continuous operation. However, most residential pools achieve excellent water quality with 8-12 hours of daily filtration, reducing electricity costs.

Installation

Q: Is the pump self-priming? A: Yes, the FreeFlo FFL-051 pump is fully self-priming up to 2 metres of lift, allowing installation either above or below water level. Optimal performance is achieved when positioned 5-10 metres from the pool with minimal pipework bends.

Q: How long does installation take? A: For a DIY installation, allow 3-5 hours including pipework connections. The pre-assembled pump and filter on the unified base significantly reduces setup time compared to separate components.

Q: Do I need a concrete base? A: A solid, level surface is essential. Concrete slabs or paving stones work well. Avoid placing directly on soil, grass, or unstable surfaces that could shift and stress connections.

Warranty & Support

Q: What warranty is included? A: The filter vessel carries a 5-year manufacturer warranty, the pump has a 2-year warranty (in the set), and the multiport valve is covered for 1 year. Contact Parts4Tubs for full warranty terms and conditions.

Q: Where can I get spare parts? A: All spare parts including O-rings, valve gaskets, laterals, pump seals, and strainer baskets are available from Parts4Tubs and authorised Pentair stockists.

📥 Downloads & Resources

 Pentair Azur with FreeFlo Installation Manual – Complete installation and operating instructions (multi-language)

 Pentair Azur with FreeFlo Brochure – Product overview and marketing specifications

 FreeFlo Pump Technical Brochure – Detailed pump specifications and performance curves

🏆 Why Choose the Pentair Azur 19″ with FreeFlo 0.5hp Pump Pack

✅ World-Leading Brand – Pentair is the global leader in residential pool equipment with over 40 years of innovation

✅ Proven Reliability – One of the best-selling pool filter combinations worldwide

✅ Larger Filter Area – 0.18 m² provides superior debris capture and longer cycles between backwashing

✅ Powerful 0.5hp Pump – 13 m³/h maximum capacity handles medium to large pools with ease

✅ Exceptional Durability – Extra-thick blow-moulded tank construction outlasts standard PE filters

✅ Whisper-Quiet Operation – Mono-block pump design minimises noise for peaceful poolside enjoyment

✅ Simple Installation – Pre-assembled on unified base with swivel unions means setup in under 5 hours

✅ Flexible Positioning – Self-priming pump and rotatable discharge suit any installation configuration

✅ Future-Proof Design – Variable speed drive compatible for energy-saving upgrades

✅ Comprehensive Warranty – Industry-leading 5-year tank warranty plus 2-year pump coverage

✅ Outstanding Value – Complete professional-quality system at an accessible price point

✅ UK Climate Ready – Large drain ports and proper winterisation design suit British conditions

🤝 Why Buy From Parts4Tubs

✅ UK-Based Company – Local support from pool equipment specialists who understand UK conditions

✅ Fast UK Delivery – Efficient dispatch to get your equipment to you quickly

✅ Expert Advice – Knowledgeable team available to help with sizing and technical questions

✅ Competitive Pricing – Great value on genuine Pentair products

✅ Full Warranty Support – We handle warranty claims directly for hassle-free resolution

✅ Easy Returns – 30-day returns policy if the product doesn’t meet your needs

✅ Complete Range – Filter media, spare parts, chemicals, and accessories all available

✅ Authorised Stockist – Genuine Pentair products with full manufacturer backing

💫 Summary

The Pentair Azur 19″ Sand Filter with FreeFlo 0.5hp Pump Pack offers powerful, efficient filtration for pools up to 36,000 litres. Combining Pentair’s durable extra-thick blow-moulded filter technology with their reliable FreeFlo FFL-051 pump, this complete system delivers professional-grade performance for medium-sized above-ground and in-ground pools.

With a 9 m³/h design flow rate, 0.18 m² filter area, premium Praher 6-way multiport valve, and quick-connect 50mm unions, maintaining crystal-clear water has never been easier. The system includes everything needed for installation on a unified base plate—simply add 65kg of filter sand and 15kg of gravel, connect your pipework, and enjoy sparkling pool water.

Backed by a 5-year filter vessel warranty, 2-year pump warranty, and Pentair’s 40+ year reputation for quality, this filter pack represents exceptional value for pool owners seeking reliable, high-capacity filtration. Order today from Parts4Tubs and enjoy pristine pool water all season long.