MUNICIPAL CORPORATION JALANDHAR

1.2 TANK :
9
The tank will be of rear tipping type and should have a total air volume capacity of 8000 Ltrs. The whole
tank should be made of steel plates 6 mm thick and should confirm to IS 2062 grade ‘A’ standard. The
tank should be of an all electrically welded construction.
The tank should be compartmentalized as follows :
4500 Ltrs for clean water and the balance 3500 Ltrs for sludge. Level Indicator size 18” X 8” of thick wall
transparent acrylic tubing should be provided on both the sides of each of the compartments 2” drain
valve should be provided at a suitable position on the clean water compartment. The tank should be
mounted on the chassis. The inside of the tank should be coated with epoxy paint.
The vacuum compartment should be provided with hydraulically operated rear door opening facility. The
tank should be mounted on hinge supports for tilting about the rear end, while the front end should have
rest pads for seating on chassis of the vehicle in the
horizontal position.
The tank should be provided with manhole at the water compartment for attending to the maintenance
operation/repairing of the tank.. The tank should be provided with suitable suction line strainer and filter
hose connections. The tank should be finished with three coats of epoxy paint of suitable enamel paint
with primer on the inside and coats on the out side. The entire tank should be fabricated and finished to
the best of quality standards and as per standard engineering practice.
REAR DOOR:
The rear door shall be top hinged open able with two double acting hydraulic cylinders. The door should
be allowed to remain secure in the raised position by an incorporated pilot check valve in the hydraulic
system. Adequate sealing and locking arrangement should be provided to render the door leak proof.
Fitted at the rear end door, the tank should be provided with a 100 mm suction cum drain valve at the
bottom most position.
The drain/suction valve shall be of carbon steel, three peace construction having a stainless steel ball.
These valves, unlike the normal cast iron valves have longer operation life and are far easier
to maintain.
Sludge should be sucked through this valve which could also be used to discharge the entire tank contents
under gravity/pressure.
Tank level indicators will be provided at a convenient location both the side on the shell of both, the
sludge as well as the clean water
compartments.
The sludge tank may be emptied by gravity or by pressurized discharge.
Emptying is via hydraulic tipping of the complete tank using a hydraulic cylinder mounted below. The
tank tipping angle would be about 30 degrees. To prevent the tank from creeping down when in the raised
position a line mounted pilot operated check valve is fitted into the hydraulic circuit.