| Marsh Grease Separator 8,000 Litres | wastewater-supplies.com | 3035 GBP | 4,000 GBP | −24.1% |
| Marsh GMS Roundel 2,000 Litre | wastewater-supplies.com | 1850 GBP | 2,400 GBP | −22.9% |
| Marsh Grease Separator 6,000 Litres | wastewater-supplies.com | 2580 GBP | 3,000 GBP | −14% |
| Marsh SUMP2DRAIN 440L Pumping Station - Effluent | wastewater-supplies.com | 845 GBP | 950 GBP | −11.1% |
| Marsh Grease Separator 10,000 Litres | wastewater-supplies.com | 3740 GBP | 4,200 GBP | −11% |
| Marsh Grease Separator 3,800 Litres | wastewater-supplies.com | 1800 GBP | 2,000 GBP | −10% |
| Marsh Grease Separator 4,500 Litres | wastewater-supplies.com | 1985 GBP | 2,200 GBP | −9.8% |
| Marsh Beacon Alarm without Pressure Switch - MA1 | wastewater-supplies.com | 380 GBP | 420 GBP | −9.5% |
| Marsh SUMP2DRAIN 300L Pumping Station - Sewage | wastewater-supplies.com | 770 GBP | 850 GBP | −9.4% |
| Marsh SUMP2DRAIN 440L Pumping Station - Sewage | wastewater-supplies.com | 1090 GBP | 1,100 GBP | −0.9% |
| Aqua-Puratine - 40 - 45 PE | wastewater-supplies.com | 19000 GBP | — | — |
| Aqua-Puratine - 30 - 35 PE | wastewater-supplies.com | 15500 GBP | — | — |
| Marsh Hydroil Oil Bypass Separator - NSBP70 | wastewater-supplies.com | 13225 GBP | — | — |
| Aqua-Puratine - 20 - 25 PE | wastewater-supplies.com | 12500 GBP | — | — |
| Marsh Hydroil Oil Bypass Separator - NSBP65 | wastewater-supplies.com | 12125 GBP | — | — |
| Aqua-Puratine - 12 - 16 PE | wastewater-supplies.com | 11200 GBP | — | — |
| Marsh Hydroil Oil Bypass Separator - NSBP60 | wastewater-supplies.com | 11035 GBP | — | — |
| Marsh Hydroil Oil Bypass Separator - NSBP50 | wastewater-supplies.com | 8295 GBP | — | — |
| Aqua-Puratine - 6 - 10 PE | wastewater-supplies.com | 8000 GBP | — | — |
| Marsh Hydroil Oil Bypass Separator - NSBP45 | wastewater-supplies.com | 7515 GBP | — | — |
| Marsh Hydroil Oil Bypass Separator - NSBP40 | wastewater-supplies.com | 6725 GBP | — | — |
| Marsh Grease Separator 20,000 Litres | wastewater-supplies.com | 5840 GBP | — | — |
| Marsh Hydroil Oil Bypass Separator - NSBP30 | wastewater-supplies.com | 5500 GBP | — | — |
| Marsh Grease Separator 18,000 Litres | wastewater-supplies.com | 5500 GBP | — | — |
| Marsh Grease Separator 16,000 Litres | wastewater-supplies.com | 5255 GBP | — | — |
| Marsh Hydroil Oil Bypass Separator - NSBP25 | wastewater-supplies.com | 5200 GBP | — | — |
| Marsh Grease Separator 14,000 Litres | wastewater-supplies.com | 4905 GBP | — | — |
| Marsh Hydroil Oil Bypass Separator - NSBP20 | wastewater-supplies.com | 4895 GBP | — | — |
| Marsh Grease Separator 12,000 Litres | wastewater-supplies.com | 4440 GBP | — | — |
| Marsh Hydroil Oil Bypass Separator - NSBP18 | wastewater-supplies.com | 4400 GBP | — | — |
| Marsh Forecourt Separator | wastewater-supplies.com | 3600 GBP | — | — |
| Marsh Hydroil Oil Bypass Separator - NSBP15 | wastewater-supplies.com | 3420 GBP | — | — |
| Marsh Hydroil Oil Bypass Separator - NSBP10 | wastewater-supplies.com | 3150 GBP | — | — |
| Marsh Hydroil Oil Bypass Separator - NSBP8 | wastewater-supplies.com | 2825 GBP | — | — |
| Marsh Hydroil Oil Bypass Separator - NSBP6 | wastewater-supplies.com | 2775 GBP | — | — |
| Marsh Hydroil Oil Bypass Separator - NSBP4.5 | wastewater-supplies.com | 2720 GBP | — | — |
| Marsh Hydroil Oil Bypass Separator - NSBP3 | wastewater-supplies.com | 2700 GBP | — | — |
| Marsh SUMP2DRAIN 2,050L Pumping Station - Sewage | wastewater-supplies.com | 1825 GBP | 950 GBP | — |
| Marsh SUMP2DRAIN 1,800L Pumping Station - Sewage | wastewater-supplies.com | 1750 GBP | 950 GBP | — |
| Marsh SUMP2DRAIN 1,200L Pumping Station - Sewage | wastewater-supplies.com | 1575 GBP | 950 GBP | — |