🌊 Waterco 1200 SPDD Commercial Bobbin Wound Filter Tank – 4 Bar, Air Scour Nozzle Plate System

High-capacity air scour filtration with 31% more flow than SPDD 1050 – the largest 3-inch model in the SPDD range

📋 Product Overview

The Waterco 1200 SPDD Commercial Bobbin Wound Filter Tank delivers exceptional filtration capacity combined with Waterco’s innovative Air Scour Nozzle Plate System for maximum backwash efficiency. With a 1200mm tank diameter and 1.13 m² filter area, this filter provides a 34 m³/hr flow rate – representing a substantial 31% increase over the SPDD 1050 while maintaining the same efficient 90mm (3-inch) connections.

As the largest 3-inch connection model in the SPDD range, the 1200 represents the optimal choice for commercial operators seeking maximum capacity before stepping up to 4-inch pipework. The innovative nozzle plate system introduces pressurised air directly into the filter bed, reducing backwash water consumption by up to 25% while achieving superior media cleaning through vigorous air/water agitation.

Built using Waterco’s precision digitally-controlled filament winding technology, this commercial filter tank features seamless bobbin-wound fibreglass construction engineered for decades of reliable service. The 1200mm deep media bed provides exceptional particle capture with 1,930 kg sand capacity, while manhole access ensures easy inspection and maintenance of the air scour system. Supplied as tank only with 4 bar pressure rating.

🌟 Key Features

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

✅ Up to 25% Less Backwash Water – Significant water and chemical savings for commercial operations

✅ 1200mm Tank Diameter – Largest 3″ model handling pools up to 272,000 litres

✅ 1.13 m² Filter Area – 31% more capacity than SPDD 1050 for demanding applications

✅ 34 m³/hr Flow Rate – High-volume filtration for busy commercial pools

✅ 90mm / 3″ Flange Connections – Maximum capacity within standard 3″ pipework systems

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

✅ 1,930 kg Sand Capacity – Nearly 2 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 1200
Filter Type	Commercial Sand/Media Filter with Air Scour (Tank Only)
Tank Diameter	1200 mm
Filter Bed Depth	1200 mm
Filter Area	1.13 m²
Flow Rate	34 m³/hr (at 30 m³/hr/m²)
Working Pressure	4 Bar (58 psi)
Maximum Working Temperature	50°C
Connection Size	3″ / 90 mm (Flange)
Sand Media Capacity	1,930 kg
Glass Media Capacity	2,170 kg
Gravel Capacity	290 kg (if using support layer)
Tank Height (Overall)	2243 mm
Tank Width	1229 mm
Empty Weight	323 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
🏨 Hotel/Resort Pool	6 hours	204,000 litres
🏋️ Fitness Centre Pool	6 hours	204,000 litres
🏫 School/College Pool	6 hours	204,000 litres
🏢 Municipal Pool	6-8 hours	204,000-272,000 litres
🏊 Competition Training Pool	6 hours	204,000 litres

This Filter:

📍 Flow Rate: 34 m³/hr at design velocity
📍 Optimal Pool Size: Up to 204,000 litres (6-hour turnover)
📍 Maximum Pool Size: Up to 272,000 litres (8-hour turnover)

💡 Sizing Note: The SPDD 1200 is the largest model with 3-inch connections. For pools requiring higher flow rates, the SPDD 1400 (46 m³/hr) upgrades to 4-inch (110mm) connections.

⚙️ Installation Requirements

Plumbing Specifications

Requirement	Specification
Inlet Connection	90 mm / 3″ Flange
Outlet Connection	90 mm / 3″ Flange
Connection Type	Flange
Filter Configuration	Side Mount
Air Scour Connection	Required for nozzle plate operation

Physical Installation

Requirement	Details
Base	Solid, level concrete pad required
Clearance Above	Minimum 600 mm for manhole access and media maintenance
Clearance Around	Minimum 700 mm for valve operation and air scour connections
Access	Manhole provides direct access to nozzle plate system
Lifting Equipment	Required – 323 kg empty weight
Floor Loading	Verify capacity (filled weight approximately 2,300 kg)

Pump & Air Scour Compatibility

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

Pump Requirements:

• Recommended flow rate: 28 – 34 m³/hr
• Maximum flow rate: Do not exceed 34 m³/hr
• Connection: 90mm / 3″ to match filter flanges

Air Scour Requirements:

• Compatible air blower for pressurised air injection
• Appropriate pipework to nozzle plate connection
• See Waterco air blower accessories for specifications

💡 Note: This is a tank-only product. Multiport valves, face pipework kits, air blowers, and pumps are sold separately. Contact Parts4Tubs for complete system specifications.

🛠️ 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 2-3 minutes
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*
3,000 L per cycle	2,250 L per cycle	39,000 L/year
4,000 L per cycle	3,000 L per cycle	52,000 L/year
5,000 L per cycle	3,750 L per cycle	65,000 L/year

*Based on weekly backwash frequency

---

🔬 Filter Media Information

Compatible Media Types

Media Type	Filtration Rating	Capacity Required	Lifespan	Key Benefits
Silica Sand	20-40 microns	1,930 kg	5-7 years	Economical, proven performance
Glass Media	5-15 microns	2,170 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: 1,930 kg (16/30 grade silica sand)
• Glass Media Capacity: 2,170 kg
• Support Gravel: 290 kg (deduct from sand capacity if used)

💡 Air Scour Benefit: The nozzle plate system works exceptionally well with glass media, providing thorough bed cleaning while being gentle on media particles – extending media life and maintaining optimal filtration performance.

---

💎 Filtration Performance

Metric	Value
Filter Area	1.13 m²
Design Flow Rate	34 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 1.13 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 1200 vs SPDD 1050

Specification	SPDD 1050	SPDD 1200	Increase
Filter Area	0.87 m²	1.13 m²	+30%
Flow Rate	26 m³/hr	34 m³/hr	+31%
Sand Capacity	1,485 kg	1,930 kg	+30%
Pool Capacity (6hr)	156,000 L	204,000 L	+31%

---

🔧 Valve Positions & Functions

Note: Multiport valve sold separately – 3″ 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

---

🏊 Ideal Applications

Application	Suitability	Notes
🏨 Hotel & Resort Pools	✅ Excellent	High capacity with water-saving air scour
🏋️ Fitness Centre Pools	✅ Excellent	Handles high bather loads efficiently
🏫 School & College Pools	✅ Excellent	Reduced water consumption meets sustainability targets
🏢 Municipal Pools	✅ Excellent	Cost-effective operation for public facilities
🏊 Competition Training Pools	✅ Excellent	Superior water clarity for athletic facilities
🌍 Water-Conscious Installations	✅ Ideal	Up to 25% backwash water savings

❓ Frequently Asked Questions

Q: What size pool will this filter handle?

A: The SPDD 1200 is suitable for pools up to 204,000 litres with a 6-hour turnover, or up to 272,000 litres with an 8-hour turnover.

Q: How does this compare to the SPDD 1050?

A: The SPDD 1200 offers 31% more flow rate (34 m³/hr vs 26 m³/hr) and 30% more filter area (1.13 m² vs 0.87 m²) while maintaining the same 3-inch connections. It’s ideal for larger pools that don’t require 4-inch pipework.

Q: Is this the largest 3-inch SPDD model?

A: Yes, the SPDD 1200 is the largest model with 90mm (3-inch) connections. The next size up, SPDD 1400, upgrades to 110mm (4-inch) connections.

Q: How much media does this filter require?

A: The filter requires 1,930 kg of sand (nearly 2 tonnes) or 2,170 kg of glass media – substantial capacity for excellent dirt-holding in high-demand commercial applications.

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

A: Yes, you’ll need a compatible air blower and appropriate pipework to connect to the nozzle plate system. Contact Parts4Tubs for air scour accessories and complete system specifications.

Q: How much water will I save with the air scour system?

A: Waterco states up to 25% reduction in backwash water compared to conventional filters. With weekly backwashing, this could save 39,000-65,000 litres annually depending on your typical backwash volume.

Q: What maintenance access does this filter have?

A: The SPDD 1200 features manhole access for direct inspection of the nozzle plate system and easy media maintenance.

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.

Q: What’s the total weight when filled?

A: Empty weight is 323 kg. With 1,930 kg of sand media, total filled weight is approximately 2,300 kg. Ensure your plant room floor can support this substantial load.

📥 Downloads & Resources

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

✅ Why Choose the Waterco 1200 SPDD

✅ Maximum 3″ Capacity – Largest filter area available with 90mm connections

✅ 31% More Flow – Significant upgrade from SPDD 1050 without changing pipework

✅ Air Scour Technology – Up to 25% less backwash water than conventional filters

✅ Nearly 2 Tonnes Media – 1,930 kg sand capacity for exceptional dirt-holding

✅ Reduced Operating Costs – Water and chemical savings accumulate over time

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

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

✅ Comprehensive Warranty – 10-year tank warranty provides peace of mind

🛒 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 – Valves, pipework, air blowers, and media available

✅ Easy Returns – 30-day returns on eligible products

💧 Summary

The Waterco 1200 SPDD Commercial Bobbin Wound Filter Tank is the largest 3-inch connection model in the SPDD air scour range, delivering 34 m³/hr flow rate and 1.13 m² filter area for commercial pools up to 204,000 litres (6-hour turnover). The innovative nozzle plate air scour system reduces backwash water by up to 25%, providing significant operational savings for hotels, fitness centres, schools, and municipal pools. With 31% more capacity than the SPDD 1050 while maintaining compatible 90mm connections, this filter offers maximum performance within standard 3-inch pipework systems. The substantial 1,930 kg sand capacity and 1200mm deep bed ensure exceptional dirt-holding and water clarity. Manhole access provides easy inspection of the air scour system. Advanced bobbin-wound fibreglass construction delivers decades of reliable commercial service. Supplied as tank only with 4 bar pressure rating. Backed by Waterco’s comprehensive 10-year tank warranty.