Pneumatic Dual Water pump using Pneumatic cylinders – Mechanical Project

Pneumatic Dual Water pump using Pneumatic cylinders – Mechanical Project


The aim of the project is pneumatic operated water pumping system. Radial plunger Pneumatic Water pumping system are reciprocating pump in which the piston is provided for the pumping action. The piston is reciprocated with the help of a pneumatic cylinder and solenoid valve. There are two cylinders are used in this project, one for pneumatic cylinder and another one for hydraulic cylinder. The output quantity of the water is varied by the timing control unit.


A pump is a Mechanical device which converts mechanical energy into hydraulic energy. This pump is classified into two types;

i. Positive Displacement and
ii. Non-Positive Displacement pump

In positive displacement pump is the one, in which the liquid is transferred positively from one stage to another stage by the to and fro motion of the plunger or piston of the pump. In non-positive displacement pump the liquid is transferred by the centrifugal force. This force is cause due to the rotary movement of an impeller. In this, our project, pneumatic water pump is of positive displacement pump. The salient features of a pneumatic water pump have been retained in our project model and this has been achieved with great care.

Due to high precision work involved in producing pneumatic water pump besides higher cost these pumps are not widely manufactured by most of the industries. The very name itself indicates that it works with the help of a piston. This piston is reciprocated with the help of a solenoid valve and electronic timing control unit.


Initially starting with air compresses, its function is to compress air from a low inlet pressure (usually atmospheric) to a higher pressure level. This is an accomplished by reducing the volume of the air.

Air compressors are generally positive displacement units and are either of the reciprocating piston type or the rotary screw or rotary vane types. The air compressor used here is a typically small sized, two-stage compressor unit. It also consists of a compressed air tank, electric rotor and pulley drive, pressure controls and instruments for quick hook up and use. The compressor is driver by a 10HP motor and designed to operate in 145 – 175 PSI range. If the pressure exceeds the designed pressure of the receiver a release value provided releases the excesses air and thus stays a head of any hazards to take place.

The stored air from compressor is passed through an air fitter where the compressed air is filtered from the fine dust particles. However, before the suction of air into compressor a filter process take place, but not sufficient to operate in the circuit here the filter is used. Then having a pressure regulator where the desired pressure to the operated is set. Here a variable pressure regulator is adopted.

Pneumatic Dual Water pump using Pneumatic cylinders - Mechanical Project
Pneumatic Dual Water pump using Pneumatic cylinders – Mechanical Project

Through a variety of direction control value are available, a hand operated Valve with manual operated. The direction control valve used here is 5 ports, 3 positions. There are two exhaust ports, two outlet ports and one inlet port. In two extreme positions only the directions can be changed while the Centro ore is a neutral position and no physical changes are incurred. The 2 outlet ports are connected to an actuator (Cylinder). The pneumatic activates is a double acting, single rod cylinder. The cylinder output is coupled to further purpose. The piston end has an air horning effect to prevent sudden thrust at extreme ends.


Since the Pneumatic water Pump is more efficient it is used for pumping the water or oil mostly.
Domestic Applications
Industrial Applications


1. This is of compact in size
2. Less Maintenance is enough
3. The oil or water pumped is of higher pressure
4. Quite running and smooth operation is achieved.
5. Higher efficiency
6. Full efficient positive displacement pump
7. Effective working principle
8. It does not have any Prime mover, like electric motor related to the unit.
9. As the air is freely available, we can utilize the air to pumping the water and hence it is economical.
10. Less Maintenance


  • It is costlier than the other types of pump because of compressor unit.
  • Less efficiency when compressed to other device.
  • Leakage of air affects the working of the unit.

Sachin Thorat

Sachin is a B-TECH graduate in Mechanical Engineering from a reputed Engineering college. Currently, he is working in the sheet metal industry as a designer. Additionally, he has interested in Product Design, Animation, and Project design. He also likes to write articles related to the mechanical engineering field and tries to motivate other mechanical engineering students by his innovative project ideas, design, models and videos.

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