SPRAYERS

• Sprayer is a machine to apply fluids in the form of droplets.

Basic components of sprayer

a) Nozzle body – It is the main component on which another component of a nozzle fit.

b) Swirl plate – It is the part of a cone nozzle which imparts rotation to the liquid passing through it.

c) Spray gun – It is a lance from which spray is readily adjustable during the operation.

d) Spray boom – It is a spray lance with spray nozzles fitted to a head, mounted at right angles to the lance.

e) Filter – It is a component to remove suspended matter larger than a predetermined size from fluid.

f) Over-flow pipe – It is a conduit through which excess fluid from a pump is by-passed by the action of a relief valve or pressure regulator.

g) Relief valve – It is an automatic device to control the pressure of fluid or gas within range a predetermined value.

h) Pressure regulator – It is an automatic device to control the pressure of fluid or gas within a range of settings.

i) Cut-off valve – It is a mechanism between the pump and the nozzle to control the flow of liquid from the sprayer. This is operated by hand.

j) Nozzle disc – It is component containing the final orifice of a nozzle usually a cone nozzle.

k) Nozzle boss – It is a lug on spray boom or spray lance to which a nozzle body or cap is screwed.

l) Nozzle tip – It is component containing the final orifice of a nozzle usually a fan nozzle.

m) Spray lance – A hand-held pipe through which the liquid reaches the nozzle mounted at the free end.