Ensign:Ultra™
Ensign:Ultra™ - 4 / Gravity is backordered and will ship as soon as it is back in stock.
The Marsh Ensign:Ultra sets the standard for domestic sewage treatment, combining proven performance with enhanced engineering. Building on the trusted design of the original Ensign, the Ultra model delivers even quieter operation, improved effluent quality, and higher overall efficiency — all without sacrificing ease of installation or affordability.
Tested and CE-approved to BS EN12566-3/A1:2009, this system delivers class-leading results with pollutant removal rates of up to 97% — helping homeowners and installers stay compliant with confidence.
With no internal moving parts, low running costs, and a full range of sizes from 4 to 50 PE, the Ensign:Ultra is the go-to solution for off-mains wastewater treatment.
KEY
- Inlet
- Primary settlement chamber
- Aeration chamber
- Compressor with alarm
- Compressor housing (External or internal options)
- RCD / Electrical connection
- PVC pressure pipe for diffuser(s)
- Bio-media
- Stainless steel mesh
- Final settlement chamber
- Sludge return
- Unique Polylok tertiary filter (Ensign:Ultra units)
- Outlet
- Access lid
- Integral lifting eyes
- Stabilising feet
- Unique ‘keying-in’ lip
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Warranty-
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Discharge To Surface Water-
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Discharge To Drainage Field-
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Power Supply Required-
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Min Person-
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Max Person-
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Tank Empty Frequency-
Ensign:Ultra™
The Marsh Ensign:Ultra sets the standard for domestic sewage treatment, combining proven performance with enhanced engineering. Building on the trusted design of the original Ensign, the Ultra model delivers even quieter operation, improved effluent quality, and higher overall efficiency — all without sacrificing ease of installation or affordability.
Tested and CE-approved to BS EN12566-3/A1:2009, this system delivers class-leading results with pollutant removal rates of up to 97% — helping homeowners and installers stay compliant with confidence.
With no internal moving parts, low running costs, and a full range of sizes from 4 to 50 PE, the Ensign:Ultra is the go-to solution for off-mains wastewater treatment.
KEY
- Inlet
- Primary settlement chamber
- Aeration chamber
- Compressor with alarm
- Compressor housing (External or internal options)
- RCD / Electrical connection
- PVC pressure pipe for diffuser(s)
- Bio-media
- Stainless steel mesh
- Final settlement chamber
- Sludge return
- Unique Polylok tertiary filter (Ensign:Ultra units)
- Outlet
- Access lid
- Integral lifting eyes
- Stabilising feet
- Unique ‘keying-in’ lip
