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12

ii-B409-DW-10A

G - Concrete and Backfill Guidelines.

To ensure that no immediate or future damage is done to your Bravo Tank Sump Reducer
components, make sure that your manhole skirt 

DOES NOT TOUCH OR REST ON THE TANK

SUMP SHOULDER.

The Manhole Skirt should be kept at minimum of 4” away from the tank sump 

shoulder. Follow the manhole manufacturers instructions for installing the manhole. Also follow other
details provided by tank and/or engineering firm for tank driveway pad installation. 

Backfill your peagravel around the sump maintaining a minimum of 1’ foot all the way around (if your
site backfill is not entirely peagravel) and 4” minimum distance from the top edge of sump reducer.

When peagravel is in place, use a 3mil or thicker plastic sheet to cover the surface of the peagravel
no less than 2 feet away from the sump reducer wall. 

Secure this plastic barrier to the 

EXTERIOR OF THE MANHOLE SKIRT

using duct tape. 

This prevents concrete from seeping too far down 
into the peagravel. 

Manhole Cover

CONCRETE

SLAB

Manhole skirt

Sump Cover

Min 1’ foot
peagravel all
around sump

1” to 1-1/2” 

Distance

3mil+ Plastic Barrier
taped to manhole skirt

SAND 

OR SOIL

Minimum

4 inches

between top

of sump

reducer and

peagravel

Manhole

skirt min.

4” away

from Tank

sump

shoulder

Summary of Contents for B409

Page 1: ...9 DOUBLEWALL TANK SUMP WITH REINFORCED BOTTOM S Bravo Systems Inc 2929 Vail Ave Commerce CA 90040 323 888 4133 FAX 323 888 4123 www SBravo com ii B409 DW 10A INSTALLATION INSTRUCTIONS Written by Jonathan Smith ...

Page 2: ...se negligence or improper installation If any fittings or components other than S Bravo Systems approved fittings or components are used in conjunction with any S Bravo Systems product the warranty pertaining to these products is immediately void 2 The B 409 Doublewall Sump w Bottom from S Bravo Systems Inc MUST be installed by Bravo Certified Contractors Details can be found at www sbravo com cer...

Page 3: ...Failure to call Bravo Systems If Vacuum level on product is less than 12 HG Vacuum 323 888 4133 refer to sump for further details WARRANTY IS VOID IF ANY OF THE FOLLOWING OCCUR BEFORE PENETRATING FIBERGLASS WALLS ENSURE THAT EACH DOUBLE WALL FIBERGLASS SUMP IS HOLDING VACUUM E Double Wall Sump Products are tested per the SB989 Testing procedures The interior of these sumps must NOT be filled with ...

Page 4: ...ed Tools NOT PROVIDED Power air Sanders Acetone to clean up tools applicators Power Cutting Tools Interstitial fluid Standard Manometer Manometer Bracket Factory Installed Nylon tubing w 20 Hg Vacuum on interstice w Combination Pressure Vacuum Gauge MANOMETER KIT PER SUMP HYDROSTATIC ONLY TOTAL HEIGHT 4 5 gal 5 6 gal 6 7 gal 7 8 gal T F 33 SAND KIT 5 8 sanding disc backs and centralizers for all B...

Page 5: ...LANTS or ADHESIVES 5 ii B409 DW 10A Gauge Assembly SVA BARB CAP While Fiberglassing curing or sitting overnight keep the SVA BARB in place This will relieve pressure on the Interstice while the sumps are heating up or cooling off SAVE THESE PIECES DO NOT LOSE THEM Remove the SVA BARB when ready to test A INSTALLING AND SECURING YOUR B409 BEFORE INSTALLING PENETRATION FITTINGS ENSURE THAT THE SUMP ...

Page 6: ...al resin fiberglass material can be seen Dust with shop brush or compressed air and do not use shop towels or acetone on the abraded area s Then apply a 3 layer strip of 2 x 2 resin saturated fiberglass mat squarely on the abraded area D Roll out any air bubbles with chamfer roller Let cure E After cure knock down fiberglass hairs and apply another flow coat of resin only Apply any extra resin to ...

Page 7: ...C 1 After passing the Field Air Integrity Test per the Installation Instructions and there are no signs of leaks you must cut the permanently affixed pipe plug from the tubing connected to the side wall This is NOT the tubing with the gauge connected to it C 2 Connect newly cut open end of tubing to barb and ball valve assembly sold seperately A 36 length of clear tubing is factory installed to th...

Page 8: ...m Assembly sold seperately to 20 Inches of mercury Then SLOWLY open ball valve and allow Interstitial fluid to flow freely into the system at a rate of about 2 gallons a minute SLOWLY open ball valve C 6 STOP PULLING VACUUM WHEN THE LIQUID IS 2 3 INCHES FROM THE VERY TOP OF THE INTERSTITIAL SPACE TEST PORT This is easily visible while filling the DoubleWall Product After liquid fill Conduct the Ad...

Page 9: ...he top of the liquid level within the interstitial space These air bubbles are visible within the vertical and horizontal channels of the walls For Tank Sumps look below the reducer On the top hat reducer of a Tank Sump any bubbles will burp consistently PAY CLOSE AND SPECIAL ATTENTION TO FIELD INSTALLED PENETRATION FITTINGS and FRP JOINTS ON TANK SUMPS THESE ARE COMMON LEAK POINTS CHECK WITH YOUR...

Page 10: ...rting and Installing these critical environmental components Here a leak is visible while a strong vacuum is pulled on the Interstitial space forcing tiny air bubbles into the interstitial space to travel upwards These streams of bubbles are easily spotted and can be traced down to its leak point or area ALDP IN ACTION DIAGRAM PAY CLOSE AND SPECIAL ATTENTION TO FIELD INSTALLED PENETRATION FITTINGS...

Page 11: ...ommon for some interstitial fluid to be lost while connecting the tubing to the primary manometer This is ok Replace lost fluid by topping off manometer with interstitial fluid until the liquid level reaches just 2 inches below the top of manometer E 5 Hydrostatic Field Integrity Test Mark the date and time of test and manometer level Allow 1 hour to look for a change in level No change in level o...

Page 12: ...aintaining a minimum of 1 foot all the way around if your site backfill is not entirely peagravel and 4 minimum distance from the top edge of sump reducer When peagravel is in place use a 3mil or thicker plastic sheet to cover the surface of the peagravel no less than 2 feet away from the sump reducer wall Secure this plastic barrier to the EXTERIOR OF THE MANHOLE SKIRT using duct tape This preven...

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