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Knapsack sprayer consists of a pump and air chamber permanently installed in a 9 to 22.5 liters tank. The handle of the pump extending over the shoulder or under the arm of operator makes it possible to pump with one hand and spray with the other.  Uniform pressure can be maintained by keeping the pump in continuous operation.


Brief Specifications:


Tank capacity (l)

Pump cylinder inner dia (mm)

Number of piston in pump cylinder

Pressure chamber capacity (ml)

Displacement volume (ml)

Number of delivery spout

Type of delivery spout

Cut off valve passage diameter (mm)

Lance length (mm)

Nozzle type

Spray angle

Size of filling hole (mm)

Pump discharge (ml/min)

Power required




:      9-22.5

:      39-42

:      One

:      572-660

:      87.24

:      One

:      Threaded

:      5

:      725

:      Hollow cone

:      78 degree

:      94.9

:      610-896

:      One person


Knapsack sprayers are used for spraying insecticides and pesticides on small tress’ shrubs and row crops.

Cost of Machine : Rs.2,500-3,500/-





It consists of two plastic tanks (fuel and water/dust), engine, pump, spray hose, rope starter, delivery pipe, cut-off-cock, shoulder straps and a frame. It has a small 2-stroke petrol/kerosene engine of 35 cc to which a centrifugal fan is connected. The fan produces a high velocity air stream, which is diverted through a 90-degree elbow to a flexible (plastic) discharge hose, which has a divergent outlet. Upon rotation of the engine the fan produces a high velocity air stream. The control valve for the spray is opened gradually and adjusted for the desired flow rate. The operator directs the discharge hose to the target. It can be converted for dusting and ULV application.


Length (mm)

Width (mm)

Height (mm)

Weight (kg)

Number of tanks

Air velocity at outlet(m/s)

Field capacity(ha/h)

Power requirement (hp/kW)


:     460

:     210

:     540

:     9-11

:     2

:    65-75

:     2-3

:     1.2/0.9 ,petrol or petrol/kerosene 



It is suitable for spraying pesticides and fungicides. It is used for spraying in rice, fruits and vegetable crops. It can be used for applying pesticides in liquid and powder form.

Cost of Machine : Rs.7000/-



The sprayer essentially consists of a tank made of fiber glass or plastic, pump assembly’s suction pipe with strainer, pressure gauges, pressure regulators, air chamber, delivery pipe and spray boom fitted with nozzles. The sprayer is mounted on 3-point linkages of the tractor. The hydraulic energy sprayers utilize PTO power of the tractor to operate the pump of the sprayer. Basically the spray boom can be arranged in two ways; ground spray boom and overhead spray boom. The overhead spray boom is designed for spraying in tall field crops and the planting is done in such a way that an unplanted strip of about 2.5 m width is left for operation of the tractor. Therefore a planted strip may be 18-20 m wide and after every planted strip a fallow strip has to be left for tractor operation. For ground spray boom the planting has to be done in rows keeping in view track width of the tractor. It uses high pressure and high discharge pump as the number of nozzles may be up to 20 depending upon the crop and make of the sprayer.


Overall length(mm)

Overall width (mm)

Overall height (mm)

Tank capacity (l)

Weight (kg)

Field capacity (ha/day)

Power Source (hp/KW)


:      6340

:      1290

:      1570

:      400

:      150-200

:      8 (with 13 nozzles)

:     25-35/17.5-22.5, tractor or above


It is used for spraying in vegetable gardens, flower crops, vineyards and for tall field crops like sugarcane, maize, cotton, sorghum, millets etc.

Cost of Machine : Rs.40,000/-




The machine consists of tank of 400 litres capacity, pump, fan, control valve, filling unit, spout, adjustable handle and spraying nozzles to release the pesticide solution in to stream of air blast produced by the centrifugal blower. The air blast distributes chemical in the form of very fine particles throughout its swath. The major portion of swath is taken care of by the main blast through the main spout and the auxiliary nozzles cover the swath area near the tractor. The sprayer is mounted on the tractor 3-point linkage and is operated by tractor PTO. The orientation of air outlet can be adjusted for its direction and width of coverage.


Type of power (rpm)

Crops suitability

Type of blower

Flow rate (l/min)

Spray rate (l/ha)

Spray swath (m)

Working speed (km/h)

Tank capacity (l)

Machine weight (kg)

Power required (hp/kW)


:      Tractor PTO at 540

:      Cotton, sugarcane, horti. crops

:      Centrifugal

:      120

:      100-400

:      15 (without wind)

:      2-6

:      400

:      230

:      35/26.25 or above tractor



It is useful for spraying on horticultural crops and crops like cotton, sunflower, sugarcane etc.

Cost of Machine : Rs.50,000/-