Passive traps - above and in ground
Mactrap polymer passive tanks can be installed above or below ground. Made from 12mm construction they are highly durable and handle temperatures up to 65C

Passive polymer tanks

Mactrap separators and our range of KESSEL passive grease separators are hydromechanically designed for maximum fat, oil and grease (FOG) retention based on inflow. This is referred to internationally as NS or L/sec. 

MACTRAP and KESSEL Passive traps range from NS.5 to NS 35 with above and below ground options.

When space, installation time and efficiency are essential, then MACTRAP  and KESSEL passive traps are world class.

EN 1825 and G13 require a grease separator to consist of grease separation chamber/s and integrated sludge trap at the bottom. FOG is guided into the separator by a pacifying pipe which allows the waste waters to be slowly and evenly distributed.

KESSEL separator

Above and below ground options

Above and below ground options

Assessing inflow and sludge rates

To reduce costs, space required and excavation issues it is important to size the correct option based on actual inflow rate. This inflow rate is the international standard applicable to fats and oil separation time vs passive volume and is the recommended maximum inflow rate for greasy water.

ASSESSING INFLOW RATE
Customers should assess 75% of the total volume of all sources of FOG likely to enter the Grease separator and divide this volume by 1 minute (0r 60) to calculate the L/second.  (Contact MACTRAP for assistance if required).  In 8 -10 hr per day operations it may be possible to be divided by 2 min (120).

As a guide the following parameters apply to MACTRAP tanks and indicate the amount of sludge and FOG accumulation manageable before cleaning out is required to avoid dysfunction due to overload. Default operation is >98% efficiency when operated in accordance with specifications.

Also refer to our KESSEL (Large operators) range for the above ground options using smaller size tanks in confined commercial space for maximum NS ratings up to NS35 and external <NS35

MACTRAP POLYMER PASSIVE SEPARATORS - HMWHDPE 12mm wall, 65C compliant- Multi Chamber

GREASE SEPARATOR SIZING

MACTRAP NS/sec Sludge FOG/L Nominal Volume Weight KG
MTP 75 0.25 15 10 85 20
MTP125 1.0 25 13 135 25
MTP250 1.5 83 41 360 51
MTP500 3.0 250 100 600 75
MTP750 3.5 300 120 970 105
MTP1000 4.0 400 160 1140 120
MTP1500 5.0 700 250 2000 180
MTP2000 6.0 900 340 2520 240
MTP2500 7.5 1000 400 3000 300
MTP3000 10.0 1000 490 3480 350

 

DIMENSIONS 

 Capacity
(L)
Length
mm
Width
mm
Height
mm
Chambers Inlet invert
mm
Outlet invert
mm
 75*  605  400  350  2  270 240
125  730  430  430  2  340  310
250 1200  500  600  3 425  375 
500 1500  500 800   3  625  575 
750 1500  750 870   3  695  645 
1000 1500  800  950   3  775 725 
1500 2500  800  1000  5  825 775 
2000 3000  800  1050  5  875 825 
2500 3000   800 1250   5  1075 1025 
 3000 3000  800   1450  5  1275 1225 

 

  • Can be installed above ground (free standing) or below ground
  • Handles up to 65C*
  • Highly durable - made from HMWPE and carries a 10 year material guarantee (if installed correctly)
  • Covers available for pedestrian of vehicular traffic locations
  • Ultratuff 50 - 3000L modular and custom options
  • For external use only (excluding the 125L tank)
  • Handles almost all chemicals
  • Easily changed for chemical variations or oils and fuels
  • 12mm construction
  • Flexible couplings to mitigate earthquake damage
  • Simple to connect and modify
  • Self cleaning options
  • Fully pressure tested for leaks

* Excludes 75L


Macctrap passive traps are available with HMWHDPE trafficable lids in categories A/B and D. For more information see Covers and Risers

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