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Hardware / Treadle Water Pump

Treadle water pump can do most of the work of a motorized pump, but costs considerably less to purchase. Because it needs no fossil fuel, it also costs less to operate. All the pond, lake and groundwater can be the water source. It can increase the area of water supplying by lengthening the intake pipe and discharge pipe. Properly adjusted and maintained, it can be operated several hours a day without tiring the users.

Pump Cylinders

Each treadle pump has two cylinders which are made of engineering plastic. The diameter of a cylinder is 100.5mm and the height is 280mm.

Non-Return Valves

The pump has two pairs of non-return valves, one pairof them are inside of the pump and the other pair of them are outside of the pump . The valve type is flapper type. It is made of circular rubber with the diameter of 90mm and the thickness of 2.5mm.


The piston assembly constitutes the piston rod (25mm x 6mm) and rubber cups with the thickness of 5.5mm.


The treadles are made of channel steel materials with the lengh of 1000mm. The hinge is at the end.

Treadle Support

The treadle support ensures that the pump is portable and supports all other components of the pump. It is made of 50mm x 30mm square steel tube.
  • It frees the farmer from the limitations of rain fed farming and raises his capacity to grow crops in both dry and rainy season.
  • Land augmenting: With the use of Treadle Pump, the Farmers can cultivate all the year round thus increasing their cropping intensity, and never leave their land fallow.
  • Productive : The Treadle Pump is capable of delivering 7000 liters of water per hour from surface water while being operated by a single person without tiring the user. As with any other suction pump, the pump is capable of working up to a maximum depth of 8 meters. However, operation beyond 7 meters is not recommended to preserve the integrity of the rubber components.
  • Change in cropping pattern : Treadle Pump technology enables the farmers to grow crops they were not able to grow earlier.
A series of new advantages is brought with the using of plastic pump body:
  • Light weight
  • Small friction, low wear and tear
  • High efficient
  • Good seal
  • Rustless
  • Corrosion-resistant
  • Low price
  • New engineering plastics, rugged
Fitting instruction and Maintenance

Cylinder Assembly

  1. Locating the rubber cup seal into the cylinder;
  2. Pushing the piston inside to the cylinder
  3. Move up & down in the cylinder
Each piston has two rubber cups, one faces to the bottom of the cylinder and the other to the top.
The pistons can be removed from the pump without detaching the rope which connects them together. When replacing the pistons, it is important to take care that the rubber cups not be damaged. And it is important to keep sealed.

Assembly of Treadles

Connect the end which has hooks with the piston rod, and the other end with the treadles’ support.
Put the dowel into the shaft, when you fixed the treadle.

Pump storage and care of Hoses

After irrigation is finished, roll up the hose properly in the field taking care not to drag it over sharp objects, and then carry it to the homestead. On no account should the hose be loosely folded and dragged over the ground from the field to the homestead, as this will decrease its endurance.

Store the pump and its fittings in a safe location. Pay particular attention to prevent damage to the hoses and rubber components. Seal the pump intake and discharge pipes to stop rodents gaining access to the flap valves in the valve vox.
When carrying or storing the pump, take care not to dent the cylinders. If this happens the piston will not move easily within the cylinders and water will leak between the rubber piston seals and the cylinder wall, making the pump less effective, also, try not to bend the piston rods.

Replacement of Worn Piston Seals

After a long period of use, the Rubber Seals on the pistons will wear down and water leaks past the piston, which reduces the performance of the pump.

An obvious sign is that the piston is loose in the Cylinder. Untie the connecting Rope and remove the piston from the Cylinder. It may be possible to increase the diameter of the Rubber Seals by tightening the Clamping Nut on the bottom of the piston. If this does not expand them sufficiently, replace them. Two spare rubber seals are supplied with the pump. If proper replacement Seals cannot be obtained, rings of rubber can be cut from old gumboots or the side walls of an old tyre and clamped between the three metal piston disks.

Debris in the Valve Box

Mud or vegetation may be accidentally drawn into the Valve Box of the Pump through the Suction Pipe if no mesh strainer is used. To remove such debris, lay the Pump and remove the ten nuts that fix the baseboard to the bottom of the Pump.

Take great care not to lose any of the nuts or washers. With the nuts and washers off, remove the Baseboard and Rubber Gasket so give access to the Valve Box. Remove any debris and at the same time check the condition of the Rubber Flap Valves, which can be easily seen. When the Valve Box is clean replace the Rubber Gasket, Wooden Baseboard and Washers, and retighten the ten nuts.
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