🌊 Waterco 2350 SPDD Commercial Bobbin Wound Filter Tank – 4 Bar, Air Scour Nozzle Plate System

The ultimate SPDD filter – over 4 m² filter area, 130 m³/hr flow rate, and nearly 7.5 tonnes of media capacity

📋 Product Overview

The Waterco 2350 SPDD Commercial Bobbin Wound Filter Tank represents the absolute pinnacle of the SPDD air scour range – delivering an extraordinary 4.34 m² filter area and commanding 130 m³/hr flow rate. With a massive 2350mm tank diameter and 6-inch (160mm) industrial connections, this flagship filter handles pools up to 1,040,000 litres – suitable for Olympic competition venues, international aquatic centres, major water parks, and the world’s most demanding commercial installations.

The innovative Air Scour Nozzle Plate System introduces pressurised air directly into the colossal 7,430 kg media bed (nearly 7.5 tonnes), reducing backwash water consumption by up to 25% while achieving superior media cleaning through vigorous air/water agitation. At this ultimate scale, annual water savings can exceed 150,000 litres – representing substantial operational cost reductions for world-class facilities.

Built using Waterco’s precision digitally-controlled filament winding technology, this commercial filter tank features seamless bobbin-wound fibreglass construction engineered for decades of the most demanding industrial service. The 1200mm deep media bed provides exceptional particle capture across the full 4.34 m² filter area, while manhole access ensures easy inspection and maintenance of the air scour system. Supplied as tank only with 4 bar pressure rating.

⭐ Key Features

✅ 4.34 m² Filter Area – Over 4 square metres of filtration surface – the largest in the SPDD range

✅ 130 m³/hr Flow Rate – Ultimate capacity for world-class aquatic facilities

✅ 160mm / 6″ Flange Connections – Heavy-duty industrial-grade pipework for maximum throughput

✅ Air Scour Nozzle Plate System – Pressurised air injection for superior backwash efficiency

✅ Up to 25% Less Backwash Water – Over 150,000 L potential annual savings at this scale

✅ 2350mm Tank Diameter – The largest diameter in the SPDD range

✅ 1200mm Deep Media Bed – Superior in-depth particle capture and extended filter runs

✅ 7,430 kg Sand Capacity – Nearly 7.5 tonnes of media for exceptional dirt-holding

✅ Manhole Access – Easy inspection and maintenance access to nozzle plate system

✅ Advanced Bobbin Wound Construction – Seamless fibreglass vessel with exceptional durability

✅ 4 Bar Pressure Rating – Engineered for demanding commercial system pressures

✅ Corrosion & UV Resistant – Premium fibreglass withstands chemicals and outdoor exposure

🔧 Technical Specifications

Specification	Value
Model	SPDD 2350
Filter Type	Commercial Sand/Media Filter with Air Scour (Tank Only)
Tank Diameter	2350 mm
Filter Bed Depth	1200 mm
Filter Area	4.34 m²
Flow Rate	130 m³/hr (at 30 m³/hr/m²)
Working Pressure	4 Bar (58 psi)
Maximum Working Temperature	50°C
Connection Size	6″ / 160 mm (Flange)
Sand Media Capacity	7,430 kg
Glass Media Capacity	6,107 kg
Gravel Capacity	1,115 kg (if using support layer)
Tank Height (Overall)	2419 mm
Tank Width	2392 mm
Empty Weight	1,189 kg
Tank Material	Fibreglass Reinforced Polyester (Bobbin Wound)
Lateral System	Nozzle Plate with Air Scour
Access	Manhole for inspection and maintenance
Warranty	10 years tank (5 years full + 5 years pro rata), 1 year components

📐 Pool Sizing Guide

Sizing Principle:

The filter’s flow rate should achieve complete pool water turnover within the required timeframe. Commercial pools typically require 6-hour turnover rates for optimal water quality, with 8-hour turnover acceptable for lower-demand applications.

Formula:

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

Pool Capacity Compatibility:

Application	Turnover Time	Maximum Pool Volume
🏊 Olympic Competition Venue	6 hours	780,000 litres
🏢 International Aquatic Centre	6 hours	780,000 litres
🌊 Major Water Park	6 hours	780,000 litres
🏨 World-Class Resort Complex	6 hours	780,000 litres
🏋️ Elite Multi-Pool Facility	6-8 hours	780,000-1,040,000 litres

This Filter:

📍 Flow Rate: 130 m³/hr at design velocity
📍 Optimal Pool Size: Up to 780,000 litres (6-hour turnover)
📍 Maximum Pool Size: Up to 1,040,000 litres (8-hour turnover)

💡 Ultimate Capacity: The SPDD 2350 is the largest single filter in the SPDD range. For standard 50m Olympic pools (2,500,000 litres), multiple units would typically be deployed in parallel for the required turnover rate.

🔌 Installation Requirements

Plumbing Specifications

Requirement	Specification
Inlet Connection	160 mm / 6″ Flange
Outlet Connection	160 mm / 6″ Flange
Connection Type	Flange
Filter Configuration	Side Mount
Air Scour Connection	Required for nozzle plate operation

Physical Installation

Requirement	Details
Base	Heavy-duty reinforced concrete pad required – extreme industrial load
Clearance Above	Minimum 1200 mm for manhole access and media maintenance
Clearance Around	Minimum 1500 mm for valve operation and air scour connections
Access	Manhole provides direct access to nozzle plate system
Lifting Equipment	Required – 1,189 kg empty weight (nearly 1.2 tonnes)
Floor Loading	Verify capacity (filled weight approximately 8,600 kg)

Pump & Air Scour Compatibility

⚠️ Important: This filter requires both pump and air blower connections for full functionality.

Pump Requirements:

• Recommended flow rate: 110 – 130 m³/hr
• Maximum flow rate: Do not exceed 130 m³/hr
• Connection: 160mm / 6″ to match filter flanges

Air Scour Requirements:

• Industrial-capacity air blower for pressurised air injection
• Heavy-duty pipework to nozzle plate connection
• Maximum-capacity blower required due to 4.34 m² bed area

💡 Note: This is a tank-only product. Multiport valves, face pipework kits, air blowers, and pumps are sold separately. Contact Parts4Tubs for 6-inch compatible valve and pipework options.

🛠️ Maintenance Guide

Air Scour Backwash Procedure

The SPDD’s nozzle plate system enables a highly efficient two-stage backwash:

Stage 1 – Air Scour:

1. Set multiport valve to backwash position
2. Activate air blower (pump off)
3. Allow air to agitate media bed for 8-10 minutes (largest bed requires extended cycle)
4. Air breaks up compacted media and dislodges trapped debris

Stage 2 – Water Backwash:

1. Switch off air blower
2. Activate pump for water backwash
3. Continue until sight glass runs clear
4. Total backwash time significantly reduced vs conventional filters

Routine Maintenance Schedule

Task	Frequency	Procedure
Check pressure gauge	Weekly	Record baseline and monitor for increases
Visual inspection	Weekly	Check for leaks, unusual sounds, pressure anomalies
Air scour backwash	When pressure rises 0.5-0.7 bar above baseline	Follow two-stage procedure above
Rinse after backwash	After each backwash	30-60 seconds to settle media
Inspect manhole seal	Quarterly	Check for wear, replace if necessary
Check nozzle plate	Annually	Inspect via manhole for damage or blockages
Full media replacement	Every 5-7 years (sand) or 10+ years (glass)	Replace completely

Pressure Gauge Guide

📊 Clean Filter Baseline: Establish after fresh media installation
📊 Backwash Trigger: 0.5-0.7 bar above baseline
📊 Maximum Operating Pressure: 4 bar

Water Savings Calculation

With up to 25% reduction in backwash water:

Conventional Backwash	SPDD Air Scour Backwash	Annual Savings*
10,000 L per cycle	7,500 L per cycle	130,000 L/year
12,000 L per cycle	9,000 L per cycle	156,000 L/year
14,000 L per cycle	10,500 L per cycle	182,000 L/year

*Based on weekly backwash frequency

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🪨 Filter Media Information

Compatible Media Types

Media Type	Filtration Rating	Capacity Required	Lifespan	Key Benefits
Silica Sand	20-40 microns	7,430 kg	5-7 years	Economical, proven performance
Glass Media	5-15 microns	6,107 kg	10+ years	Finer filtration, longer life
ZeoSand/Zeolite	3-5 microns	As specified	5 years	Superior clarity, ammonia removal
AFM (Activated Filter Media)	1-5 microns	As specified	10+ years	Bio-resistant, self-sterilising

Standard Media Configuration:

• Sand Capacity: 7,430 kg (nearly 7.5 tonnes of 16/30 grade silica sand)
• Glass Media Capacity: 6,107 kg (over 6 tonnes)
• Support Gravel: 1,115 kg (deduct from sand capacity if used)

💡 World-Class Recommendation: With 7,430 kg media capacity, glass media offers exceptional long-term value for elite facilities – finer filtration (5-15 microns vs 20-40 for sand) with 10+ year lifespan dramatically reduces total cost of ownership at this ultimate scale.

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🔬 Filtration Performance

Metric	Value
Filter Area	4.34 m²
Design Flow Rate	130 m³/hr
Design Velocity	30 m³/hr/m²
Bed Depth	1200 mm (deep bed design)
Backwash Efficiency	Up to 25% water reduction

Air Scour Technology Advantage

The SPDD’s nozzle plate system delivers superior backwash performance:

• Uniform Air Distribution: Pressurised air introduced evenly across entire 4.34 m² filter bed
• Vigorous Agitation: Air bubbles break up compacted media and dislodge trapped particles
• Optimal Bed Expansion: Consistent media fluidisation throughout backwash cycle
• Faster Cleaning: Reduced backwash duration saves time and labour
• Water Conservation: Up to 25% less backwash water consumption
• Better Media Cleaning: More thorough debris removal extends media life

Capacity Comparison: SPDD 2350 vs SPDD 2000

Specification	SPDD 2000	SPDD 2350	Increase
Filter Area	3.14 m²	4.34 m²	+38%
Flow Rate	94 m³/hr	130 m³/hr	+38%
Sand Capacity	5,360 kg	7,430 kg	+39%
Glass Capacity	4,405 kg	6,107 kg	+39%
Pool Capacity (6hr)	564,000 L	780,000 L	+38%
Connection Size	160mm/6″	160mm/6″	Same ✓

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⚙️ Valve Positions & Functions

Note: Multiport valve sold separately – 6″ rated valve required

Position	Function
Filter	Normal filtration mode – water flows through media bed
Backwash	Reverse flow with air scour – superior media cleaning
Rinse	Settles media after backwash – brief forward flow to waste
Waste	Bypass filter – pump directly to drain
Recirculate	Bypass filter – return to pool without filtration
Closed	Stop all flow – isolate filter from system

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🎯 Ideal Applications

Application	Suitability	Notes
🏊 Olympic Competition Venues	✅ Excellent	Ultimate capacity for world-class events
🏢 International Aquatic Centres	✅ Excellent	Maximum single-filter capacity available
🌊 Major Water Parks	✅ Excellent	Handles extreme throughput efficiently
🏨 World-Class Resort Complexes	✅ Excellent	Multiple pool coverage capability
🏋️ Elite Multi-Pool Facilities	✅ Excellent	Over 4 m² filter area for demanding facilities
🌍 Water-Conscious Major Facilities	✅ Ideal	Over 150,000 L potential annual backwash savings

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❓ Frequently Asked Questions

Q: What size pool will this filter handle?

A: The SPDD 2350 is suitable for pools up to 780,000 litres with a 6-hour turnover, or up to 1,040,000 litres with an 8-hour turnover.

Q: Is this the largest filter in the SPDD range?

A: Yes, the SPDD 2350 is the flagship model and the largest in the entire SPDD range. For larger requirements, multiple units can be deployed in parallel or consider Waterco’s even larger commercial options.

Q: How does this compare to the SPDD 2000?

A: The SPDD 2350 offers 38% more flow rate (130 m³/hr vs 94 m³/hr), 38% more filter area (4.34 m² vs 3.14 m²), and 39% more media capacity (7,430 kg vs 5,360 kg). Both use 6-inch connections, making the SPDD 2350 an upgrade path without replumbing.

Q: How much media does this filter require?

A: The filter requires 7,430 kg of sand (nearly 7.5 tonnes) or 6,107 kg of glass media (over 6 tonnes) – the largest capacity in the SPDD range for exceptional dirt-holding in world-class applications.

Q: Do I need additional equipment for the air scour system?

A: Yes, you’ll need an industrial-capacity air blower and appropriate pipework to connect to the nozzle plate system. The 4.34 m² filter area requires the largest capacity blower in the range.

Q: What’s the total weight when filled?

A: Empty weight is 1,189 kg (nearly 1.2 tonnes). With 7,430 kg of sand media, total filled weight is approximately 8,600 kg (over 8.5 tonnes). Ensure your plant room floor can support this extreme industrial load.

Q: What warranty is included?

A: Waterco provides a 10-year tank warranty (5 years full cover plus 5 years pro rata) and 1-year warranty on components.

📥 Downloads & Resources

📄 SPDD Technical Datasheet – Full specifications and dimensions for all SPDD models

🏆 Why Choose the Waterco 2350 SPDD

✅ Ultimate SPDD Model – The largest and most capable filter in the entire range

✅ Over 4 m² Filter Area – 4.34 m² provides exceptional world-class filtration

✅ 130 m³/hr Flow Rate – Handles pools up to 780,000 litres (6-hour turnover)

✅ Air Scour Technology – Up to 25% less backwash water (150,000+ L annual savings)

✅ Nearly 7.5 Tonnes Media – 7,430 kg sand capacity for exceptional dirt-holding

✅ Reduced Operating Costs – Substantial water and chemical savings at ultimate scale

✅ Deep Bed Filtration – 1200mm media depth for exceptional water clarity

✅ Industrial-Grade Construction – Bobbin wound fibreglass for decades of service

🤝 Why Buy from Parts4Tubs

✅ UK-Based Company – Local support and expertise from pool industry specialists

✅ Fast UK Delivery – Efficient dispatch on commercial equipment orders

✅ Expert Technical Advice – Get sizing recommendations and system design guidance

✅ Competitive Pricing – Commercial-grade equipment at excellent value

✅ Full Warranty Support – We handle warranty claims directly with manufacturers

✅ Complete System Components – 6″ valves, pipework, air blowers, and media available

✅ Easy Returns – 30-day returns on eligible products

💧 Summary

The Waterco 2350 SPDD Commercial Bobbin Wound Filter Tank is the ultimate flagship model in the SPDD air scour range, delivering an extraordinary 4.34 m² filter area and 130 m³/hr flow rate for commercial pools up to 780,000 litres (6-hour turnover). As the largest and most capable SPDD filter available, this is the definitive choice for Olympic competition venues, international aquatic centres, major water parks, and world-class resort complexes requiring maximum single-filter capacity. The innovative nozzle plate air scour system reduces backwash water by up to 25%, potentially saving over 150,000 litres annually at this scale. The massive 7,430 kg sand capacity (nearly 7.5 tonnes) and 1200mm deep bed ensure exceptional dirt-holding and water clarity for the most demanding applications. Manhole access provides easy inspection of the air scour system. Advanced bobbin-wound fibreglass construction delivers decades of reliable service at the highest performance levels. Supplied as tank only with 4 bar pressure rating. Backed by Waterco’s comprehensive 10-year tank warranty.