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SPEL Stormceptor® is a well proven, high quality system, specially designed and fabricated to provide a very effective means of separating oil/light liquids and silt in stormwater drainage systems, it was also the first Environment Agency listed class 1 by-pass separator. The SPEL Stormceptor ‘SC’ models are also designed to capture high volumes of silt.
100 Series
(1.3m internal diameter):
NSB 3
Catchment area: 1,667m2
200 Series
(1.2m internal diameter):
NSB 4 – NSB 15
Catchment area: 2,222m2 – 8,333m2
300 Series
(1.8m internal diameter):
NSB 20 – NSB 50
Catchment area: 11,111m2 – 27,778m2
400 Series
(2.6m internal diameter):
NSB 60 – NSB 160
Catchment area: 33,333m2 – 88,889m2
500 Series
(3.5m internal diameter):
NSB 180 – NSB 250
Catchment area: 100,000m2 – 139,000m2
600 Series
(4m internal diameter):
NSB 300 – NSB 800
Catchment area: 167,000m2 – 444,000m2
Designed with reference to BS EN 13121. All tank shells carry the SPEL 25 Year Warranty and life expectancy in excess of 50 years.
Different tank shell specifications are available dependent upon tank invert levels, ground conditions and ground water levels. (See Installation Guidance section)
160/225/300mm diameter PVCU socket/spigot.
450, 600, 750, 900 and 1200mm diameter GRP spigot available, for connecting to site pipework via Flex-Seal/Band-Seal or similar flexible couplings.
The nine inlet/outlet options below are available to assist with design and installation.
The highly successful SPEL fuel/oil Separators are depended on across the globe. They are the result of extensive testing by H R Wallingford, the hydraulics research testing station, for hydrocarbon removal performance against the stringent British/European Standard BS EN 858 -1. The tests required the hydrocarbons introduced into the separator at 5ml/litre to be reduced to a maximum of 5mg/litre in the outlet.
H R Wallingford started testing SPEL Separators in 1999 and the SPEL Stormceptor® class 1 by-pass separator was the first to achieve accreditation under the standard in the UK.
The current British Standard is the succession to the well respected Environment Agency document, PPG3.
All models performed well within the European Standard with an average of 0.64mg/l.
Since then, the SPEL Stormceptor® Class 1 by-pass and the Puraceptor® Class 1 full retention Separators have advanced in performance and construction as a result of technological advances in design and manufacture.
The ‘heart’ of the SPEL Separators is the unique long life, low maintenance coalescer unit/s which ‘polishes’ the final effluent after 90% hydrocarbon and silt have been separated out.
Coalescer units comprise a stainless steel basket with a robust and efficient high volume reticulated foam insert. The coalescing process brings the smaller globules of oil into larger and more buoyant forms to separate by gravity. The high volume foam safeguards against blockages and ensures a long life between servicing.
The coalescer inserts are easy to clean and simple to replace but rarely require replacing. The unique ‘insert’ format ensures that this unit can be extracted complete every time, compared to other systems where ‘wrap around’ style units allow the foam to slip off, requiring confined space entry to retrieve.
‘Companies who pollute the environment can be hit with unlimited financial penalties from the Environment Agency from today (11 December 2023).’ gov.uk, ‘Unlimited penalties introduced for those who pollute environment’ (11 December 2023)
| 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 Diameter (mm) | |||
| Flow (l/s) | NSB x 15 | NSB x 100 | L | W | A | B | C | 450 | 600 | 750* | 900 | ||||
| 103 C1/SC | 3 | 30 | 1,667 | 45 | 300 | 1,550 | 1,300 | 500 | 1,015 | 965 | 160 | 2 | – | – | – |
| 204 C1/SC | 4 | 40 | 2,222 | 60 | 400 | 1,860 | 1,225 | 550 | 1,350 | 1,300 | 300 | – | – | 1 | – |
| 206 C1/SC | 6 | 60 | 3,333 | 90 | 600 | 2,120 | 1,225 | 550 | 1,350 | 1,300 | 300 | – | – | 1 | – |
| 208 C1/SC | 8 | 80 | 4,444 | 120 | 800 | 2,270 | 1,225 | 550 | 1,350 | 1,300 | 300 | – | – | 1 | – |
| 210 C1/SC | 10 | 100 | 5,556 | 150 | 1,000 | 2,920 | 1,225 | 550 | 1,350 | 1,300 | 300 | – | – | 1 | – |
| 212 C1/SC | 12 | 120 | 6,667 | 180 | 1,200 | 3,570 | 1,225 | 560 | 1,350 | 1,300 | 300 | – | – | 1 | – |
| 215 C1/SC | 15 | 150 | 8,333 | 225 | 1,500 | 4,237 | 1,225 | 560 | 1,350 | 1,300 | 300 | – | – | 1 | – |
| 320 C1/SC | 20 | 200 | 11,111 | 300 | 2,000 | 3,200 | 1,875 | 700 | 1,450 | 1,350 | 450 | – | 2 | – | – |
| 325 C1/SC | 25 | 250 | 13,889 | 375 | 2,500 | 3,540 | 1,875 | 700 | 1,450 | 1,350 | 450 | – | 2 | – | – |
| 330 C1/SC | 30 | 300 | 16,667 | 450 | 3,000 | 4,420 | 1,875 | 700 | 1,450 | 1,350 | 450 | – | – | 1 | 1 |
| 340 C1/SC | 40 | 400 | 22,222 | 600 | 4,000 | 5,760 | 1,875 | 740 | 1,410 | 1,310 | 450 | – | 1 | 1 | – |
| 345 C1/SC | 45 | 450 | 25,000 | 675 | 4,500 | 6,570 | 1,875 | 740 | 1,410 | 1,310 | 450 | – | 1 | 1 | – |
| 350 C1/SC | 50 | 500 | 27,778 | 750 | 5,000 | 7,060 | 1,875 | 740 | 1,410 | 1,310 | 450 | – | 1 | 1 | – |
| 460 C1/SC | 60 | 600 | 33,333 | 900 | 6,000 | 4,400 | 2,700 | 950 | 2,100 | 2,000 | 600 | – | 1 | – | 1 |
| 470 C1/SC | 70 | 700 | 38,889 | 1,050 | 7,000 | 5,250 | 2,700 | 950 | 2,100 | 2,000 | 600 | – | 1 | – | 1 |
| 480 C1/SC | 80 | 800 | 44,444 | 1,200 | 8,000 | 6,170 | 2,700 | 950 | 2,100 | 2,000 | 600 | – | 1 | – | 1 |
| 4100 C1/SC | 100 | 1,000 | 55,556 | 1,500 | 10,000 | 7,400 | 2,700 | 1,100 | 1,950 | 1,850 | 750 | – | 1 | – | 1 |
| 4125 C1/SC | 125 | 1,250 | 69,444 | 1,875 | 12,500 | 9,050 | 2,700 | 1,100 | 1,950 | 1,850 | 750 | – | 1 | – | 1 |
| 4150 C1/SC | 150 | 1,500 | 83,333 | 2,250 | 15,000 | 9,950 | 2,700 | 1,100 | 1,950 | 1,850 | 750 | – | – | – | 2 |
| 4160 C1/SC | 160 | 1,600 | 88,889 | 2,400 | 16,000 | 11,830 | 2,700 | 1,250 | 1,800 | 1,700 | 750 | – | – | 1 | 2 |
| 5180 C1/SC | 180 | 1,800 | 100,000 | 2,700 | 18,000 | 7,470 | 3,650 | 1,185 | 2,690 | 2,550 | 900 | – | – | 1 | 2 |
| 5200 C1/SC | 200 | 2,000 | 111,000 | 3,000 | 20,000 | 8,530 | 3,650 | 1,185 | 2,690 | 2,355 | 1,200 | – | 1 | 1 | 2 |
| 5250 C1/SC | 250 | 2,500 | 139,000 | 3,750 | 25,000 | 10,040 | 3,650 | 1,185 | 2,690 | 2,355 | 1,200 | – | 2 | 1 | 2 |
| 6300 C1/SC | 300 | 3,000 | 167,000 | 4,500 | 30,000 | 10,310 | 4,150 | 1,325 | 2,850 | 2,675 | 1,200 | – | – | 1 | 2 |
| 6350 C1/SC | 350 | 3,500 | 194,000 | 5,250 | 35,000 | 11,470 | 4,150 | 1,325 | 2,850 | 2,675 | 1,200 | – | 1 | 1 | 3 |
| 6400 C1/SC | 400 | 4,000 | 222,000 | 6,000 | 40,000 | 12,690 | 4,150 | 1,325 | 2,850 | 2,675 | 1,200 | – | – | 2 | 3 |
| 6500 C1/SC | 500 | 5,000 | 278,000 | 7,500 | 50,000 | 15,870 | 4,150 | 1,325 | 2,850 | 2,675 | 1,200 | – | – | 2 | 4 |
| 6600 C1/SC | 600 | 6,000 | 333,000 | 9,000 | 60,000 | 18,260 | 4,150 | 1,325 | 2,850 | 2,675 | 1,200 | – | 2 | 1 | 4 |
| 6700 C1/SC | 700 | 7,000 | 389,000 | 10,500 | 70,000 | 22,250 | 4,150 | 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 | 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 | 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 | 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 |
Please note that C1 models do not have the full silt storage capacity as recommended in BS EN 858. Alternative silt capacity needs to be designed into the
network upstream of the separator. This could include a silt capture tank.
*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.
All SPEL Separator Systems have a large range of technical accessories to ease maintenance and monitoring.
Circular access shafts are supplied in 450, 600, 700, 900 and 1200mm diameter. Rectangular shafts are supplied in 800, 900 and 1000mm X 1000/1250/1500mm. GRP ladders can be incorporated for more access, complete with stainless steel fixings.
Shafts can be laminated onto the tank up to a maximum height of 1.2m. Above this height extension shafts can be supplied separately for on-site fitting during installation.
Shafts up to 400mm high are laminated onto the tank. Above this height extension shafts can be supplied separately for on-site fitting during installation.
Shafts up to 300mm high are laminated onto the tank. Above this height extension shafts can be supplied separately for on-site fitting during installation.
Stub access shafts are fitted 100mm high and extension access shafts fitted as 500 series. Above this height extension shafts can be supplied separately for on-site fitting during installation.
These are supplied in 500mm increments and are available in different laminate specs to suit site-specific invert levels and applications.
Note: only applicable to units fitted with the SPEL Coalescer
Normal servicing of the smaller SPEL Separators frequently requires emptying the unit completely. Guide rails provide access for the coalescer units to be taken out, cleaned and returned and guided accurately to their seating positions. However larger SPEL Separators may only require the hydrocarbon pollutants and silt to be removed.
In order to limit the servicing to sucking off the fuel/oil from the top and the silt from the bottom guide rails are required to ensure coalescer units are replaced into their correct positions.
The system is robust, manufactured throughout in stainless steel and the action positive, leaving no doubt the coalescer unit is located properly.
Brackets fixed to the top and bottom of the coalescer unit simply engage the stainless steel guide rail fixed to the top of the stub access shaft. The coalescer is then lowered in the normal way, being guided at the correct angle into the conical base unit which locates the coalescer unit into its final position.
Extension guide rails can be incorporated into SPEL extension shafts to suit (preferably when ordered with the separator).
SPEL coalescer units lowered into the separator with the SPEL guide rail system are easily guided into the base unit’s conical moulding to automatically sit correctly.
However, when the separator is full of water, debris or silt accumulated over a period, this could prevent the coalescer unit from re-seating correctly after servicing.
The coalescer unit lifting/locating/locking system provides assurance the coalescer unit is seated correctly and can be locked into position to prevent tampering.
The system is particularly suitable in SPEL Separator + Econoskim® systems where the total contents of the separator are not emptied on servicing.
The system comprises a robust stainless steel lifting and lowering handle that locates on the guide rail system. When the coalescer unit is correctly located in the conical seating in the separator, the handle will align with guide rail top bracket i.e.. the handles slotted holes with the top bracket clip locking groove, see diagram.
When aligned the stainless steel clip can be located through the slots and lock into position on the top bracket.
The stainless steel lifting handle can be extended to suit deep tank inverts and provide easy access for lifting manually or with the SPEL tripod and hoist.
Alarm systems are available for all SPEL separators. These include probes for oil, silt and high level. There are also a range of control panels including solar power, more detail on our alarm systems can be found here.
Detects oil and indicates when the separator’s oil storage is full.
This probe is required in order for a treatment device to comply with BS EN 858.
Monitors the silt layer in the oil separator and indicates when the silt layer has reached its maximum level.
Indicates when the liquid level in the oil separator rises excessively e.g. in an outlet blockage situation.
Kiosks for externally mounted alarm/control panels are available. Click here for further detail.
Where surface water run-off has a high silt content the coalescer units can become filled, making them heavy to lift out. In order to facilitate easy withdrawal of coalescer units the SPEL tripod and hoist is recommended.
The SPEL Separator + Econoskim System is a patented system designed to maintain oil separators at peak performance for as long as possible. It does this by skimming the oil from the surface of the separator and transferring it to a separate containment tank for simple collection by a waste oil contractor thus reducing costs and further protecting the environment. For more information, click here.
1. When the SPEL constant monitoring system detects the level of fuel/oil pollutants has reached the pre-determined volume, the skimmers are brought into operation, transferring these pollutants from the SPEL separator to the SPEL Tankstor® containment tank. When the transference of light liquid pollutants has been completed, the system automatically stops the skimming process and re-sets.
2. During the skimming cycle a small amount of water is transferred from the SPEL separator into the SPEL Tankstor® containment tank. In order to maximise the capacity of the SPEL Tankstor® containment tank for pollutants, accumulated water is automatically transferred back to the SPEL separator.
3. The process repeats automatically every time pollutants reach the pre-determined volume. When the SPEL Tankstor® containment tank is 90% full, the SPEL constant monitoring system signals ‘EMPTY NOW’ with an audible and visual alarm.
The polluted surface water first enters the primary chamber (chamber 1) where silt settles out and is retained. The fuel, oil and other pollutants lighter than water, rise to the surface and are efficiently skimmed off and transferred to the separation chamber (chamber 2).
In normal conditions all the flow passes through the separation chamber, where the quiescent conditions allow the pollutants to separate out efficiently. Water from the cleanest zone in the
separation chamber flows through a coalescer unit, to remove smaller globules of oil, up to the outlet chamber (chamber 3) and thence to the outlet pipe.
During a storm the level in the primary chamber rises and the stormwater passes over the weir into the outlet chamber and to the outlet pipe.
The design keeps the turbulence within the separation chamber to a minimum which avoids disturbing the contaminants retained.
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