GRAF Heavy-Duty Septic Holding Tanks – BARR Plastics
With high stability and strength, these German-engineered Carat S tanks by GRAF exceed industry standards. You ll love them for their versatility, ease of installation and use, and low shipping and operating costs. Use the Carat S as a septic tank, pump chamber, or wastewater treatment system. These belowground Carat S
With high stability and strength, these German-engineered Carat S tanks by GRAF exceed industry standards. You ll love them for their versatility, ease of installation and use, and low shipping and operating costs. Use the Carat S as a septic tank, pump chamber, or wastewater treatment system. These belowground Carat S tanks are also ideal for rainwater harvesting and stormwater retention/detention. The groundwater stable tanks feature long-lasting water-tightness, thanks to a circumferential profile gasket, and they are suitable for vehicle loading.The GRAF Carat S tank range is produced using a method that is as yet unique for tanks of this size. The injection compression process gives the products an incomparable stability all Carat S underground tanks are suitable for vehicle loading and can be installed in groundwater up to the middle of the tanks. Additionally, the new method guarantees that the components will fit; a result that cannot be achieved with conventional production methods.
Graf HD Holding TanksClick on Part # to view tank drawing
Capacity
Part # / Drawing
Dia./ Width (in)
Length (in)
Height (in)
Lid/Fill Opening (in)
Fitting (in)
Weight (lbs)
USG
IG
LTR
Premium Weight 1.5-1.7 SG
Heavy Weight 1.9 SG
700
583
2700
N/A
372024
61
82
55.1
31.5
N/A
265
1000
833
3750
N/A
372025
69
90
62.6
31.5
N/A
331
1250
1041
4800
N/A
372026
78
90
71.7
31.5
N/A
408
1700
1416
6500
N/A
372027
86
94
82.7
31.5
N/A
485
1700
1416
6500
Extension Tank
372014
86
94
82.7
31.5
N/A
490
Graf HD Holding Tank Accessories
Part # Size Description Weight (lbs)
371041
N/A
Dome Shaft Mini for Carat S
N/A
371040
N/A
Dome Shaft Maxi for Carat S
N/A
375077
N/A
Tank Baffle for Carat S
N/A
371010
N/A
Mini Telescopic Dome Shaft with PP Lid, suitable for pedestrian loading.
13.2
371011
N/A
Maxi Telescopic Dome Shaft with PP Lid, suitable for pedestrian loading.
28.7
371003
N/A
Extension Carat S
N/A
371020
N/A
Telescopic Dome Shaft with Cast Iron Lid, suitable for vehicle loading.
N/A
340022
N/A
Universal-Filter 3 Internal
9.5
340037
N/A
Optimax-Pro® Filter Internal with curved outlet.
6.6
340060
N/A
Minimax-Filter 3 Internal
5.5
202030
N/A
Overflow Siphon DN 100 with rodent guard.
N/A
330108
N/A
Overflow Siphon DN 100
N/A
330140
N/A
Calmed Inlet Pot
N/A
332033
N/A
4 SCH 40 Pipe Seal DN 100 Black - Wall Thickness 9-13mm.
N/A
330612
N/A
4 Tank Dome Inlet Plug (Sleeve Socket DN 110)
N/A
61765
N/A
4 Rubber SDR35 Pipe Grommet 1 HUB (Tank Dome Use Only)
N/A
322001
N/A
127mm Hole Saw For DN 100 Pipe Seal
N/A
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How a Septic Tank Works
