SPEL RainSave

With rainwater harvesting being at the top of the SuDS hierarchy, it should be considered at the earliest possible stage of the SuDS design process, even before water quality, quantity, biodiversity and amenity are considered. The SPEL RainSave® rainwater harvesting system is a primary asset in any SuDS design and has been designed in accordance with the British Standard BS 8515:2009 ‘Rainwater harvesting systems – Code of practice’ (BS EN 16941- 1:2018). This is a fully automatic system incorporating pre-treatment chambers, high quality pumps, UV treatment, and SPEL Tankstor GRP tanks to enable a fully modular design.

Rainwater Harvesting Systems

Rainwater harvesting is simply the collection and storage of clean rainwater for reuse.

When it rains, water runs off impermeable surfaces, into a drain, we often forget that it has to go somewhere. Lots of water causes flooding which is what we aim to control.

Every drop that we can store and reuse is a drop less that can reduce flooding. We need to look at where we can use water that would otherwise come from the tap and cost us money, such as irrigation, toilet flushing, car/plant washing etc. Did you know that a typical garden sprinkler uses around 1,100 litres of water per hour?

The concept is simple, intercept one or more of the downpipes from your home or work premises and direct this to a tank, from here you can pump it to provide almost free water and help the environment. This can start from a simple home kit to a fully integrated tank with pre-filtration and a water treatment system, the water can then be pumped and used for toilet flushing in homes and schools, watering lawns and gardens, feeding livestock, washing cars and plant etc.

The use of harvested or non-potable (non-drinking) water has recently increased as the cost of water has risen and we have become more concerned about our environment.

Product Sizing

H Series | Horizontal Tanks

200 Series
(1.2m internal diameter):
1,000 – 10,000L capacity

300 Series
(1.8m internal diameter):
4,000 – 40,000L capacity

400 Series
(2.6m internal diameter):
13,650 – 100,000L capacity

500 Series
(3.5m internal diameter):
60,000 – 200,000L capacity

600 Series
(4.0m internal diameter):
100,000 – 300,000L capacity

Applications

Plant washes
Truck and train washes
Process water
Toilet flushing
Irrigation
Car washing

Shell Design

Designed with reference to BS EN 13121. All tank shells carry the SPEL 25 Year Warranty and life expectancy in excess of 50 years.

Shell Specifications

Different tank shell specifications are available dependent upon tank invert levels, ground conditions and ground water levels.

Inlet/Outlet Connections

Pipe connections available to
accommodate most standard sizes.

SPEL RainSave

Choosing the Right System

Rainwater Harvesting in Sustainable Urban Drainage (SuDS)

Water reuse is at the top of the SuDS hierarchy meaning it will become more important as the planning authorities insist on good SuDS being included in all new developments; this will be endorsed with the enacting of Schedule 3 of the 2010 Flood and Water Management Act.
Lead Local Flood Authorities (LLFAs) are implementing Schedule 3 with planning applications being checked for the inclusion of more robust SuDS design and compliance across the 4 Pillars, making Rainwater Harvesting more important than ever.
If every family in the UK harvested 1 litre of rainwater per week, it would save over 1 billion litres of water every year, this could be greatly increased if we get businesses, schools, and transport systems to do the same.

Design Considerations

The objective is to provide a system that maximises the available suitable catchment area, and provide economic and efficient storage capacity as well as treatment most suitable for the final use.
For catchment areas, roofs are the best, although hard standing such as car parking and aircraft aprons can be included. The risks with hard standing areas are the possible additions of hydrocarbons and faecal material into the system.
Pre-filters are strongly recommended to remove leaves and other debris prior to storage. The SPEL Tankstor rainwater storage tanks incorporate a calmed inlet, and an overflow with an anti back flow valve to prevent contamination. There is also a float pump that collects water from the top 100mm of stored water (this is the cleanest water). The larger systems have larger pumps with associated pedestals, guide rails, pipework and valves ‘factory fitted and tested’. Dual/triple pumps can be duty/ assist or duty/standby.

The first stage of treatment is the SPEL pre-storage filter. Two models are available; the SPEL RainSave Debris Filter Chamber and the SPEL RainSave In-Tank Debris Filter, both of which can be tailored to suit site conditions and/or design constraints.
These incorporate a stainless steel mesh filter with a mesh opening size of 1mm. The filter is easily removed for maintenance. These filters prevent leaves and other solid debris entering the tank. For some applications, further treatment may not be required, however for any application involving human contact (or close contact), further treatment is required.

SPEL RainSave Debris Filter Chamber

The SPEL RainSave Debris Filter Chamber is a completely separate unit to the storage tank. It is available in a range of diameters but is usually provided as a 1.2m internal diameter chamber. It incorporates a stainless steel mesh filter with a mesh opening size of 1mm. The main advantage of this unit over the intank option is that it has larger debris capacity for longer periods between maintenance, but also flexibility of inlet, outlet and overflow diameters and positioning is available.

SPEL RainSave In-Tank Debris Filter

The SPEL RainSave In-Tank Debris Filter is a cylindrical basket with a 1mm mesh opening size. Firstly, the water enters an extended shaft on the top of the tank before making its way through this mesh filter. It then discharges down into the rainwater tank. The advantage of this system is that it is delivered to site as a complete tank with integrated pre-treatment. In shallower excavations, the space required for this may not be available. Also, due to this unit being situated on the tank, the overflow pipe can be fitted in a limited number of locations, to avoid other tank access shafts.

SPEL RainSave Rainwater Storage Tank

The SPEL Tankstor range of tanks are incorporated into SPEL RainSave Systems. Designed in accordance with BS EN 13121.
SPEL Tankstor underground tanks are manufactured by the technically advanced chop hoop filament winding process, the tank shell is also covered by the SPEL 25 Year Warranty and life expectancy of up to 50 years. Capacities range from 1,000 litres up to 300,000 litres in a single unit.
It is advised that storage tanks are below ground as the water temperature is kept at a level that ensures less degeneration of water quality.

SPEL offer three systems for transporting the harvested rain water from the tank to its point of use. 1, the SPEL Direct System pumps the water from the tank via a treatment unit direct to its point of use. 2, the SPEL Indirect System pumps water via a treatment unit to a header tank from where it can be distributed. 3, the final option is the SPEL Stand Pipe System which pumps direct from the tank to the point of use with no treatment.

SPEL RainSave Pumping and Treatment Systems

Features of Standard SPEL Direct and Indirect Pumping and Treatment Systems

Control panel

A slim design control panel that comes to site ready to be fitted into the plant room via it’s one-piece structure (package system), and controls the system automatically with a digital display showing the system status.

2 Stage Particulate Treatment

Two stage particulate treatment captures particles down to 5 microns across two separate filter units, ensuring longer life between replacements.

UV Treatment System

Water passes the UV lamp after passing through both particulate filters, this ensures maximum bacteria reduction providing high quality, non-potable water. The control system ensures the UV lamps are running at optimum performance and alerts when UV lamp replacement is required.

Pressure Vessel

Works to protect the pumps and supply consistent pressure.

Pressure monitor

Ensures correct pressure is maintained and warns of system pressure loss.
Bespoke SPEL RainSave Pumping and Treatment Systems are available with optional extras, including features such as:

Chlorine dosing
Monitoring unit displaying rainwater and mains usage

SPEL RainSave Pumping Options

Each of the SPEL RainSave options on the next page have a pumping element and SPEL have a number of pump flows available:

RS5D: 20 Litres/min
RS8D: 35 Litres/min
RS16D: 70 Litres/min

3 bar is the standard operating pressure, other pressures and flow rates can be provided by SPEL to suit specific site requirements.

SPEL RainSave Pumping and Treatment Systems

The SPEL RainSave Pumping and Treatment Systems pump the water from the Rainwater Storage Tank via a control panel, this treats the water before it is pumped to its destination. Full details of pumping volume/pressure and treatment options can be found on the previous page or by calling our technical support team.

SPEL RainSave Direct System

Rainwater is supplied direct under pressure from the storage tank simplifying plumbing and removing the need for a header tank. This system is typically used for irrigation and vehicle or plant washing. Mains backup can be connected the storage tank to ensure continuity of supply. The direct system always has a dual pump system in to provide continuity in case of pump failure to ensure continuity of supply.
When mains water is piped into a tank or similar, a ‘Type AB’ air gap must be provided to ensure the water in the tank does not cross contaminate the mains water pipe. Four options are also available to achieve this air gap:

Solenoid valve mains connection with type AB air gap
A larger outlet than inlet
A SPEL type AB tundish cabinet
Type AB air gap positioned elsewhere in the system.

SPEL RainSave Indirect System

The SPEL RainSave Indirect System pumps to a header tank, which also allows the mains backup to be simply connected to the header tank. This is usually a single pump system (dual pump available), as supply is less reliant on the RainSave pumps. This allows for a dedicated booster system and for easier retrofitting of rainwater harvesting systems.

SPEL RainSave Stand Pipe System

The SPEL RainSave Stand Pipe System is a much simpler system with no control panel and simply pumps direct from the tank to wherever the water is required. This system needs careful consideration as the only treatment of the water will be by the pre-tank debris filter therefore finer particles, bacteria, and harmful coliforms may be present. Risks such as legionella, keeping untreated water away from humans, and particulate staining, must be considered.

SPEL Products provide drawings for approval for the Tankstor storage tank and associated pre-filter. Installation should be carried out in accordance with the SPEL Installation Instructions in the SPEL Data Manual Section 8 and the other elements (electrical, plumbing, etc.) in accordance with good practice and appropriate regulations.

System Commissioning

On completion of the installation and confirmation that the electrical power supply is connected and available for the SPEL RainSave control panel/skid position together with the mains water back-up supply (if applicable), a SPELGuard engineer can visit site and commission the system if required.

Calculating the most efficient tank capacity requires the following procedure:
Annual rainfall: obtain the annual rainfall for the area from your local Environment Agency office or the Meteorolgical Office.
Drainage coefficients: See the table below.

Run-off Yield Coefficients

Type	Run-off	Depression Storage*
Pitched roof with profiled metal sheeting	0.9	0.1
Pitched roof with tiles	0.8	0.3
Flat roof without gravel	0.8	1
Flat roof with gravel	0.8	1
Green roof, intensive**	0.5	5
Green roof, extensive**	0.7	4
Permeable areas, various**	0 – 0.3	2.0 – 4.0

Run-off Yield Coefficients

*Volume of water lost from surfaces, eg. by evaporation or absorption before run-off commences.

**The run-off yield is uncertain for these surfaces and depends on their design.

Rainwater Collection Efficiency

The rainwater storage tank can be sized based on the expected usage or on the maximum potential volume of rainwater that can be captured. We recommend both methods are considered.

To calculate the size of the tank from the demand requirements

Tank size (litres) =	20 days storage x annual usage	= ………… litres
	365

To calculate the size of the tank from rainfall for maximum catchment

Annual rainwater yield = catchment area x yield efficiency* x rainfall m x filter efficiency 95% = ……….. m³

Tank size (20 days storage) =	above m³	= ………… m³
	18.25

To obtain the efficiency rating

See chart ‘Rainwater Collection Efficiency’ below

Ratio =	Catchment area (A) x Annual rainfall (R)	=	AR
	Annual demand (D)		D

*Yield efficiency = Run-off less Depression Storage

This is the operation of the SPEL RainSave Direct System. For more information on this system and also to see SPEL’s two alternative Rainsave systems, see the SPEL Rainsave Pumping and Treatment Options above.

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Request A Quotation

For further information phone our sales hotline 01743 457977, email sales@spelproducts.co.uk or Click the button below.

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Model	Series	Meals per Day*	NSG	Tank Length (mm)	Internal Diameter (mm)	Overall Capacity (L)	Grease Capacity (L)	Inlet Invert (m)	Base to Inlet (mm)	Base to Outlet(mm)	Optimum In/Out Pipe Diameter** (mm)	Number of Access Shafts (dia. mm)
				L				A	B	C		600
GS200/2000	200	400	4	2,040	1,200	2,000	160	1,020	1,000	940	160	2
GS200/3000	200	600	6	2,930	1,200	3,000	240	1,020	1,000	940	160	2
GS200/4000	200	900	9	3,810	1,200	4,000	360	1,020	1,000	940	160	2
GS200/5000	200	1100	11	4,700	1,200	5,000	440	1,020	1,000	940	160	2
GS200/6000	200	1400	14	5,578	1,200	6,000	560	1,020	1,000	940	160	2
GS300/5860	300	1400	14	2,690	1,800	5,860	560	1,600	1,600	1,550	160	2
GS300/9270	300	1800	18	4,015	1,800	9,270	720	1,600	1,600	1,550	160	2
GS300/18200	300	4000	40	7,620	1,800	18,200	1600	1,600	1,600	1,550	160	2

Model	Series	Max. Flow*	Silt Capacity (L)	Overall Length*	Internal Diameter (mm)	Opt In/Out Pipe Diameter (mm)	Number of Access Shafts (dia. mm)	Inlet Invert (mm)
		Flow (l/s)		L			600	A
WDS 200/1000	200	1.1	250	1.17	1,200	160mm	1	–
WDS 200/2000	200	2.2	500	2.05	1,200	160mm	1	–
WDS 200/3000	200	3.3	700	2.93	1,200	160mm	1	–
WDS 200/4000	200	4.5	1,000	3.82	1,200	160mm	1	–
WDS 200/5000	200	5.6	1,250	4.7	1,200	160mm	1	–
WDS 200/6000	200	6.7	1,500	5.59	1,200	160mm	1	–
WDS 200/7000	200	7.8	1,750	6.48	1,200	160mm	1	–
WDS 200/8000	200	9	2,000	7.36	1,200	160mm	1	–
WDS 200/9000	200	10	2,250	8.25	1,200	160mm	1	–
WDS 200/10,000	200	11	2,500	9.13	1,200	160mm	1	–
WDS 300/4000	300	5	1,000	1.95	1,800	160mm	1	–
WDS 300/6000	300	7	1,500	2.76	1,800	160mm	1	–
WDS 300/8000	300	9	2,000	3.54	1,800	160mm	1	–
WDS 300/10,000	300	12	2,500	4.29	1,800	160mm	1	–

Model	Series	Nominal Size (NB)	Catchment Area (M2)	Oil Storage (L)	Silt Capacity (L)	Overall Length* (mm)	Overall Diameter (mm)	Inlet Invert (mm)	Base to Inlet (mm)	Base to Outlet (mm)	Optimum In/Out pipe Diameter** (mm)	Number of Access Shafts (dia. mm)
		Flow (l/s)						A	B	C		450	600	750
FR004 SC	200	4	222	40	400	1,720	1225	630	1,110	1,050	160		1
FR006 SC	200	6	333	60	600	2,270	1,225	630	1,110	1,050	160		1
FR010 SC	200	10	556	100	1,000	3,410	1,225	630	1,110	1,050	160		1
FR015 SC	300	15	833	150	1,500	2,760	1,875	350	1,800	1,740	225			1
FR020 SC	300	20	1,111	200	2,000	3,200	1,875	350	1,800	1,740	225			1
FS2 SC	300	20	1,111	200	2,000	4,290	1,875	350	1,800	1,740	225			1
FR030 SC	300	30	1,667	300	3,000	4,420	1,875	390	1,760	1,700	300			1
FR040 SC	300	40	2,222	400	4,000	5,760	1,875	390	1,760	1,700	300			1
FR050 SC	300	50	2,778	500	5,000	7,060	1,875	390	1,760	1,700	300			1
FR065 SC	400	65	3,611	650	6,500	4,810	2,700	425	2,625	2,525	300	1	1
FR080 SC	400	80	4,444	800	8,000	5,700	2,700	425	2,625	2,525	300	1	1
FR100 SC	400	100	5,555	1,000	10,000	7,400	2,700	475	2,575	2,475	450	1	1
FR125 SC	400	125	6,944	1,250	12,500	8,580	2,700	475	2,575	2,475	450	1	1
FR150 SC	400	150	8,333	1,500	15,000	10,180	2,700	475	2,575	2,475	450	1	1
FR165 SC	400	165	9,166	1,650	16,500	11,200	2,700	500	2,550	2,450	450		2
FR200 SC	400	200	11,110	2,000	20,000	13,710	2,700	660	2,390	2,290	600		2
FR250 SC	400	250	13,888	2,500	25,000	16,750	2,700	660	2,390	2,290	600		2

Model	Series	Nominal Size (NB)	Catchment Area (M2)	Oil Storage (L)	Silt Capacity (L)	Overall Length* (mm)	Overall Diameter (mm)	Inlet Invert (mm)	Base to Inlet (mm)	Base to Outlet (mm)	Optimum In/Out pipe Diameter** (mm)	Number of Access Shafts (dia. mm)
		Flow (l/s)						A	B	C		450	600	750
FR040	300	40	2,222	400		4,020	1,875	390	1,760	1,700	300			1
FR050	300	50	2,778	500		5,070	1,875	390	1,760	1,700	300			1
FR065	400	65	3,611	650		3,710	2,700	425	2,625	2,525	300	1	1
FR080	400	80	4,444	800		4,400	2,700	425	2,625	2,525	300	1	1
FR100	400	100	5,555	1000		5,250	2,700	475	2,575	2,475	450	1	1
FR125	400	125	6,944	1250		6,090	2,700	475	2,575	2,475	450	1	1
FRI50	400	150	8,333	1500		7,400	2,700	475	2,575	2,475	450	1	1
FR165	400	165	9,166	1650		7,960	2,700	500	2,550	2,450	450		2
FR200	400	200	11,110	2000		9,600	2,700	660	2,390	2,290	600		2
FR250	400	250	13,888	2500		11,830	2,700	660	2,390	2,290	600		2
FR300	400	300	16,665	3000		14,120	2,700	660	2,390	2,290	600		2
FR400	500	400	222,222	4,000	optional	*	3,650					–	3	–

*Overall length subject to inlet/outlet size and orientation

**SPEL Separators are designed for a maximum flow (NS/NSB) but can be fitted with larger than the recommended maximum connection size IN/OUT or with the addition of adapters providing the maximum flow (NS/NSB) cannot be exceeded or any increase in the operating level in the SPEL Separator to cause the captured pollutants to escape into the vent connections or through access shaft connections. Any overriding of the above criteria could jeopardise performance to the European Standard BS EN 858-1.

Note: Model FS2SC is a special forecourt unit with 7600 litre spillage holding capacity.

Model	Series	Nominal Size (NS)	Catchment Area (m2)	Oil Storage (L)	Silt Capacity (L)	Overall Length* (mm)	Overall Diameter (mm)	Inlet Invert (mm)	Base to Inlet (mm)	Base to Outlet (mm)	Optimum In/Out Pipe Diameter** (mm)	Number of Access Shafts (dia. mm)
		Flow (l/s)				L		A	B	C		450	750	900	1200
P006 2C/SC/NG	200	6	333	60	600	3,050	1225	427	1,110	1,050	160	–	1	1	–
P010 2C/SC/NG	200	10	556	100	1,000	4,700	1,225	427	1,110	1,050	160	–	3	–	–
P015 2C/SC/NG	300	15	833	150	1,500	4,020	1,875	540	1,610	1,550	225	–	3	–	–
P020 2C/SC/NG	300	20	1,111	200	2,000	4,020	1,875	540	1,610	1,550	225	–	3	–	–
P025 2C/SC/NG	300	25	1,389	250	2,500	4,290	1,875	540	1,610	1,550	225	–	3	–	–
P030 2C/SC/NG	300	30	1,667	300	3,000	5,070	1,875	550	1,600	1,500	300	–	2	1	–
P040 2C/SC/NG	300	40	2,222	400	4,000	6,570	1,875	550	1,600	1,500	300	–	2	1	–
P050 2C/SC/NG	300	50	2,778	500	5,000	8,260	1,875	550	1,600	1,500	300	–	2	1	–
P065 2C/SC/NG	300	65	3,611	650	6,500	10,220	1,875	550	1,600	1,500	300	1	2	1	–
P065 2C/SC/NG	400	65	3,611	650	6,500	5,470	2,700	665	2,385	2,285	300	1	1	1	–
P080 2C/SC/NG	400	80	4,444	800	8,000	6,170	2,700	665	2,385	2,285	300	1	1	1	–
P100 2C/SC/NG	400	100	5,555	1,000	10,000	7400	2,700	665	2385	2285	450	1	1	1	–
P125 2C/SC/NG	400	125	6,944	1,250	12,500	9,600	2,700	765	2,285	2,185	450	1	2	–	1
P150 2C/SC/NG	400	150	8,333	1,500	15,000	11,200	2,700	790	2,280	2,180	450	1	2	–	1
P200 2C/SC/NG	400	200	11,110	2,000	20,000	16,400	2,700	940	2,130	2,030	600	2	2	–	1
P300 2C/SC/NG	500	300	16,665	3,000	30,000	12,530	3,650	875	3,000	2,900	600	2	2	–	1
P400 2C/SC/NG	500	400	22,220	4,000	40,000	16,330	3,650	875	3,000	2,900	600	3	2	2	–

Model	Series	Nominal Size (NS)	Catchment Area (m2)	Oil Storage (L)	Silt Capacity (L)	Overall Length* (mm)	Overall Diameter (mm)	Inlet Invert (mm)	Base to Inlet (mm)	Base to Outlet (mm)	Optimum In/Out Pipe Diameter* (mm)	Number of Access Shafts (dia. mm)
		Flow (l/s)				L		A	B	C		750	900	1200
FP 1C/SCClass 1 Forecourt SeparatorSingle Chamber with Silt Capture	300	20	1,111	200	2,000	4,290	1,875	350	1,800	1,740	225	1	–	–
FP 2C/SCClass 1 Forecourt SeparatorTwo Chamber with Silt Capture	300	20	1,111	200	2,000	5,500	1,875	350	1,800	1,740	225	2	–	–
FS2 SCClass 2 Forecourt SeparatorSingle Chamber with Silt Capture	300	20	1,111	200	2,000	4,290	1,875	350	1,800	1,740	225	–	–	1

Model	Nominal Size (NSB)	Peak Flow (l/s)	Catchment Area (m2)	Oil Storage (L)	Silt Storage (L)	Length (mm)	Internal Diameter (mm)	Inlet Invert (mm)	Base to Inlet (mm)	Base to Outlet (mm)	Optimum in/out Pipe Diameter (mm) for Orientation*	Number of Access Shafts A-C Diameter (mm)
	Flow (l/s)			NSB x 15	NSB x 100	L	W	A	B	C			750*	900
103 C1/SC	3	30	1,667	45	300	1,550	1,300	500	1,015	965	160		–	–
204 C1/SC	4	40	2,222	60	400	1,860	1,200	550	1,350	1,300	300		1	–
206 C1/SC	6	60	3,333	90	600	2,120	1,200	550	1,350	1,300	300		1	–
208 C1/SC	8	80	4,444	120	800	2,270	1,200	550	1,350	1,300	300		1	–
210 C1/SC	10	100	5,556	150	1,000	2,920	1,200	550	1,350	1,300	300		1	–
212 C1/SC	12	120	6,667	180	1,200	3,570	1,200	560	1,350	1,300	300		1	–
215 C1/SC	15	150	8,333	225	1,500	4,237	1,200	560	1,350	1,300	300		1	–
320 C1/SC	20	200	11,111	300	2,000	3,200	1,800	700	1,450	1,350	450		–	–
325 C1/SC	25	250	13,889	375	2,500	3,540	1,800	700	1,450	1,350	450		–	–
330 C1/SC	30	300	16,667	450	3,000	4,420	1,800	700	1,450	1,350	450		1	1
340 C1/SC	40	400	22,222	600	4,000	5,760	1,800	740	1,410	1,310	450		1	–
345 C1/SC	45	450	25,000	675	4,500	6,570	1,800	740	1,410	1,310	450		1	–
350 C1/SC	50	500	27,778	750	5,000	7,060	1,800	740	1,410	1,310	450		1	–
460 C1/SC	60	600	33,333	900	6,000	4,400	2,600	950	2,100	2,000	600		1	1
470 C1/SC	70	700	38,889	1,050	7,000	5,250	2,600	950	2,100	2,000	600		1	1
480 C1/SC	80	800	44,444	1,200	8,000	6,170	2,600	950	2,100	2,000	600		1	1
4100 C1/SC	100	1,000	55,556	1,500	10,000	7,400	2,600	1,100	1,950	1,850	750		1	1
4125 C1/SC	125	1,250	69,444	1,875	12,500	9,050	2,600	1,100	1,950	1,850	750		1	1
4150 C1/SC	150	1,500	83,333	2,250	15,000	9,950	2,600	1,100	1,950	1,850	750		–	2
4160 C1/SC	160	1,600	88,889	2,400	16,000	11,830	2,600	1,250	1,800	1,700	750		1	2
5180 C1/SC	180	1,800	100,000	2,700	18,000	7,470	3,500	1,185	2,690	2,550	900		1	2
5200 C1/SC	200	2,000	111,000	3,000	20,000	8,530	3,500	1,185	2,425	2,325	1,200		1	2
5250 C1/SC	250	2,500	139,000	3,750	25,000	10,040	3,500	1,185	2,425	2,325	1,200		1	2
6300 C1/SC	300	3,000	167,000	4,500	30,000	10,310	4,000	1,325	2,850	2,675	1,200		1	2
6350 C1/SC	350	3,500	194,000	5,250	35,000	11,500	4,000	1,325	2,850	2,675	1,200		2	3
6400 C1/SC	400	4,000	222,000	6,000	40,000	12,690	4,000	1,325	2,850	2,675	1,200		2	3
6500 C1/SC	500	5,000	278,000	7,500	50,000	15,870	4,000	1,325	2,850	2,675	1,200		2	4
6600 C1/SC	600	6,000	333,000	9,000	60,000	18,260	4,000	1,325	2,850	2,675	1,200		1	4
6700 C1/SC	700	7,000	389,000	10,500	70,000	22,250	4,000	1,325	2,850	2,675	1,200		2	5
6500 C1	500	5,000	27.8	7,500	Nil	11,910	4,150	1,325	2,850	2,675	1,200		1	4
6600 C1	600	6,000	33.3	9,000	Nil	13,510	4,150	1,325	2,850	2,675	1,200		1	4
6700 C1	700	7,000	38.9	10,500	Nil	16,650	4,150	1,325	2,850	2,675	1,200		1	5
6800 C1	800	8,000	44.4	12,000	Nil	19,890	4,150	1,325	2,850	2,675	1,200		1	6

Model	Series	Treated Flow Rate (l/s)	Maximum Design Storm Flow (l/s)	Catchment area* (m²)	Head Loss Storm Flow (mm)	Overall Diameter (mm)	Overall Chamber Height (mm)	Inlet to Base (mm)	Inlet Invert (mm)	Silt Capacity (L)	Hydrocarbon Capacity (L)	Pipe Size dia. (mm)	Access Opening (mm)
SHV 200/30	200	30	122	4,000	180	1,225	2,680	1,600	1,080	360	220	300	Ø750
SHV 300/70	300	70	280	9,333	255	1,825	3,800	2,400	1,400	1,200	900	450	Ø900
SHV 400/200	400	200	650	26,665	350	2,700	5,000	3,300	1,700	3,450	2,000	600	Ø1,200
SHV 500/400	500	400	900	53,333	500	3,540	5,390	3,000	2,390	5,000	4,800	750	Ø1,200

Model	Series	Max. Flow (l/s)	Catchment Area Based on 65mm/hr	Oil Storage (L)	Silt Capacity (L)	Tank Length (mm)	Internal Diameter (mm)	Inlet Invert (mm)	Base to Inlet (mm)	Base to Outlet (mm)	Optimum in/out Pipe Diameter* (mm)	Number of Access Shafts (dia. mm)
								A	B	C		450	600	750	900	1,200
P004/1C/ESR	200	4	222	40	400	1,710	1,220	630	1,110	1,050	160	–	–	1	–	–
P006/1C/ESR	200	6	333	60	600	2,310	1,220	630	1,110	1,050	160	–	–	1	–	–
P010/1C/ESR	200	10	556	100	1,000	3,400	1,220	630	1,110	1,050	160	–	–	1	–	–
P015/1C/ESR	300	15	833	150	1,500	3,200	1,800	350	1,800	1,740	225	1	–	1	–	–
P020/1C/ESR	300	20	1,111	200	2,000	3,540	1,800	350	1,800	1,740	225	–	1	1	–	–
P030/1C/ESR	300	30	1,667	300	3,000	4,420	1,80	390	1,760	1,700	300	–	1	–	1	–
P040/1C/ESR	300	40	2,222	400	4,000	5,760	1,800	390	1,760	1,700	300	–	1	–	1	–
P050/1C/ESR	300	50	2,778	500	5,000	7,060	1,800	390	1,760	1,700	300	–	1	–	1	–
P065/1C/ESR	400	65	3,611	650	6,500	4,810	2,600	425	2,625	2,525	300	–	1	–	2	–
P080/1C/ESR	400	80	4,444	800	8,000	5,700	2,600	425	2,625	2,525	300	–	1	–	2	–
P100/1C/ESR	400	100	5,555	1,000	10,000	7,400	2,600	475	2,575	2,475	450	–	1	–	2	–
P125/1C/ESR	400	125	6,944	1,250	12,500	8,580	2,600	475	2,575	2,475	450	–	–	1	2	–
P150/1C/ESR	400	150	8,333	1,500	15,000	10,180	2,600	475	2,575	2,475	450	–	–	1	2	–
P165/1C/ESR	400	165	9,166	1,650	16,500	11,200	2,600	500	2,550	2,450	450	–	–	1	2	–
P200/1C/ESR	400	200	11,110	2,000	20,000	13,710	2,600	660	2,390	2,290	600	–	1	2	1	–
P250/1C/ESR	400	250	13,888	2,500	25,000	16,750	2,600	660	2,390	2,290	600	–	1	2	2	–
P280/1C/ESR	400	280	15,555	2,800	28,000	18,800	2,600	660	2,390	2,290	600	–	1	2	2	–
P300/1C/ESR	500	300	16,665	3,000	30,000	12,410	3,500	805	3,070	2,970	750	–	1	2	2	–
P400/1C/ESR	500	400	22,220	4,000	40,000	15,760	3,500	805	3,070	2,970	750	–	2	2	2	–
P500/1C/ESR	500	500	27,775	5,000	50,000	20,530	3,500	955	2,920	2,820	900	–	2	2	1	1
P500/1C/ESR	600	500	27,775	5,000	50,000	16,040	4,000	925	3,250	3,150	900	–	2	2	1	1
P600/1C/ESR	600	600	33,330	6,000	60,000	19,080	4,000	925	3,250	3,150	900	–	2	2	–	2
P700/1C/ESR	600	700	38,888	7,000	70,000	21,470	4,000	925	3,250	3,150	900	–	3	2	3	–
P800/1C/ESR	600	800	44,440	8,000	80,000	23,020	4,000	925	3,250	3,150	900	–	3	2	2	1
P900/1C/ESR	600	900	49,846	9,000	90,000	24,658	4,000	925	3,250	3,150	900	–	3	2	–	3

Model	Series	Treated Flow Rate	Maximum Flow	Connectible / Catchment area (m²)*	Oil Storage (litres)	Silt Capacity (litres)	Tank Length (mm)	Internal Diameter (mm)	Inlet Invert (mm)	Base to Inlet (mm)	Base to Outlet (mm)	Optimum in / out pipe diameter ** (mm)	Number of Access Shafts A-C*** (dia. mm)
							L		A	B	C			750	900	1200
210C1/ESR	200	10	100	1,333	150	1,000	2,920	1,220	550	1,350	1,300	300		1	–	–
212C1/ESR	200	12	120	1,600	180	1200	3,570	1,220	550	1,350	1,300	300		1	–	–
215C1/ESR	200	15	150	2,000	225	1,500	4,237	1,220	550	1,350	1,300	300		1	–	–
320C1/ESR	300	20	200	2,665	300	2,000	3,200	1,800	700	1,450	1,350	450		–	–	–
325C1/ESR	300	25	250	3,333	375	2,500	3,535	1,800	700	1,450	1,350	450		–	–	–
330C1/ESR	300	30	300	4,000	450	3,000	4,420	1,800	700	1,450	1,350	450		1	1	–
340C1/ESR	300	40	400	5,333	600	4,000	5,760	1,800	740	1,410	1,310	450		1	–	–
345C1/ESR	300	45	450	6,000	675	4,500	6,563	1,800	740	1,410	1,310	450		1	–	–
350/C1/ESR	300	50	500	6,665	750	5,000	7,060	1,800	740	1,410	1,310	450		1	–	–
460C1/ESR	400	60	600	8,000	900	6,000	4,400	2,600	950	2,100	2,000	600		1	1	–
470C1/ESR	400	70	700	9,333	1,050	7,000	5,250	2,600	950	2,100	2,000	600		1	1	–
480C1/ESR	400	80	800	10,665	1,200	8,000	6,170	2,600	950	2,100	2,000	600		1	1	–
4100C1/ESR	400	100	1,000	13,333	1,500	10,000	7,400	2,600	1,100	1,950	1,850	750		1	1	–
4125C1/ESR	400	125	1,250	16,665	1,875	12,500	9,000	2,600	1,100	1,950	1,850	750		1	1	–
4150C1/ESR	400	150	1,500	20,000	2,250	15,000	9,930	2,600	1,100	1,950	1,850	750		–	2	–
4160C1/ESR	400	160	1,600	21,333	2,400	16,000	11,830	2,600	1,250	1,950	1,850	750		1	2	–
5180C1/ESR	500	180	1,800	24,000	2,700	18,000	7,472	3,500	1,185	2,690	2,550	900		1	2	–
5200C1/ESR	500	200	2,000	26,665	3,000	20,000	8,530	3,500	1,185	2,570	2,355	1,200		1	2	–
5250C1/ESR	500	250	2,500	33,333	3,750	25,000	10,040	3,500	1,185	2,690	2,355	1,200
6300C1/ESR	600	300	3,000	40,000	4,500	30,000	10,310	4,000	1,325	2,850	2,675	1,200		1	2	–
6350C1/ESR	600	350	3,500	46,665	5,250	35,000	11,500	4,000	1,325	2,850	2,675	1,200		2	3	–
6400C1/ESR	600	400	4,000	53,333	6,000	40,000	12,690	4,000	1,325	2,850	2,675	1,200		2	3	–
6500C1/ESR	600	500	5,000	66,665	7,500	50,000	15,880	4,000	1,325	2,850	2,675	1,200		2	4	–
6600C1/ESR	600	600	6,000	80,000	9,000	60,000	18,256	4,000	1,325	2,850	2,675	1,200		1	5
6700C1/ESR	600	700	7,000	93,333	10,500	70,000	22,250	4,000	1,325	2,850	2,675	1,200

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SPEL RainSave

Rainwater Harvesting Systems

Product Sizing

H Series | Horizontal Tanks

Applications

Shell Design

Shell Specifications

Inlet/Outlet Connections

SPEL RainSave

Choosing the Right System

Rainwater Harvesting in Sustainable Urban Drainage (SuDS)

Design Considerations

SPEL RainSave Debris Filter Chamber

SPEL RainSave In-Tank Debris Filter

SPEL RainSave Rainwater Storage Tank

SPEL RainSave Pumping and Treatment Systems

Features of Standard SPEL Direct and Indirect Pumping and Treatment Systems

Control panel

2 Stage Particulate Treatment

UV Treatment System

Pressure Vessel

Pressure monitor

SPEL RainSave Pumping Options

SPEL RainSave Pumping and Treatment Systems

SPEL RainSave Direct System

SPEL RainSave Indirect System

SPEL RainSave Stand Pipe System

System Commissioning

Run-off Yield Coefficients

Run-off Yield Coefficients

Rainwater Collection Efficiency

To calculate the size of the tank from the demand requirements

To calculate the size of the tank from rainfall for maximum catchment

To obtain the efficiency rating

Case Study | Digiplex | Oslo

Case Study | Hyde Park Botanical Gardens

Case Study | Snowdon (Yr Wyddfa) Café & Visitor Centre | Rainsave

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