Glossary of Terms Mantis M5 Series Units The Mantis M Series units come preassembled and are 5 feet in length (as measured from the Support Distribution Pipe) and 12” high. 12” and 24” wide models are available. The 12” wide model is the Mantis 5.1, and the 24” wide model is the Mantis 5.2. All mod- els have 6”...
This area is engineered dosing systems or commercial systems, contact known as the Internal Surface Optimization envelope, ISO Eljen’s Technical Resource Department at 1-800-444-1359. for short. The ISO envelope provides an increased surface Mantis M Series systems must be designed and constructed area that greatly exceeds the Filter Support Module’s...
Series 5.1 unit = 4 ft²/lf or 20 ft² per unit, and a minimum of 30 units 4. The minimum Mantis M Series system area required is 300 ft² 5. The minimum number of bedrooms for residential designs shall be 2 bedrooms 2013 Virginia Mantis M Design & Installation Manual Page 6 www.eljen.com...
2.35 ft²/lf or 11.75 ft² per unit in Soil Class IV Minimum of 30 units 4. The minimum Mantis M system area required is 300 ft² 5. The minimum number of bedrooms for residential designs shall be 2 bedrooms 2013 Virginia Mantis M Design & Installation Manual Page 7 www.eljen.com...
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Series 5.1 unit = 2 ft²/lf or 10 ft² per unit, minimum of 30 units 4. The minimum Mantis M system area required is 300 ft² 5. The minimum number of bedrooms for residential designs shall be 2 bedrooms 2013 Virginia Mantis M Design & Installation Manual Page 8 www.eljen.com...
1.5 VEHICULAR TRAFFIC AND PAVED AREAS OVER SYSTEM: All vehicular traffic is prohibited over the Mantis NOTE: Eljen recommends the use of septic tank outlet system. This is due to the compaction of material required effluent filters on all systems, especially on those systems to support traffic loading.
10% increase in slope. The Mantis units and Specified Sand must be installed level at their units and Specified Sand must be installed level at their design elevations. design elevations. 2013 Virginia Mantis M Design & Installation Manual Page 10 www.eljen.com...
Modules and to the sides of the units. Specified Sand must be placed lightly and may be accomplished with a backhoe or other suitable equipment. DO NOT dump full loads of Specified Sand directly on the units. 2013 Virginia Mantis M Design & Installation Manual Page 11 www.eljen.com...
940 (c) (1), Pressure percolation lines should have a minimum manifold. FIGURE 5 : MANTIS M SERIES PRESSURE DISTRIBUTION—ORIFICE LAYOUT 2013 Virginia Mantis M Design & Installation Manual Page 13 www.eljen.com...
This maintains the The vent is usually a 4-inch diameter pipe extended to a continuity of airflow from the field. FIGURE 6: MANTIS M SERIES VENTING DIAGRAM 2013 Virginia Mantis M Design & Installation Manual Page 14 www.eljen.com...
2" BY-PASS AIR LINE SPECIFIED SAND 6" PUMP CHAMBER PER DESIGN NATIVE SOIL OR SEPTIC TANK PER DESIGN FIGURE 8: MANTIS M SERIES 2˝ BY-PASS LINE FOR PUMP TO GRAVITY SYSTEMS 2013 Virginia Mantis M Design & Installation Manual Page 15 www.eljen.com...
• The Mantis system is not for use under vehicular traffic • Eljen mandates venting when the system will have more or for under paving applications. than 18˝ of cover material as measured from the top of the unit to finished grade.
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Business Name of Installer Name (print) _______________________________________ Signature Date ___________________________________________________________ Notice of Substitution to be used when an AOSE or PE has specified a Substituted System as part of a permit application. 2013 Virginia Mantis M Design & Installation Manual Page 17 www.eljen.com...
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This is to notify the Virginia Department of Health (“VDH”) that a ____(insert manufacturer’s name and model # or description)____ (“Substituted System”) will be substituted for a gravel-type drainfield system. 2013 Virginia Mantis M Design & Installation Manual Page 18 www.eljen.com...
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In the mid-1980s, we introduced our Geotextile Sand Filter products for the passive advanced treatment of onsite wastewater in both residential and commercial applications. Today, Eljen is a global leader in providing innovative products and solutions for protecting our environment and public health.
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