SEFEX Presurized Treadle Pump is a foot operated two cylinder pump and uses Treadles to engage both the operator's legs and full body weight. It can be used to lift water from bore wells, canals, ponds, streams etc. and it is designed to irrigate small area of crops. Water can be delivered overhead Tank upto 16 Mtrs height from ground level. The whole body and other metal parts of the pumps are hot dip galvanized, to minimize the effect of rusting on the metal parts as these parts are always in contact with water. It makes this pump more durable.
The pump is human powered to eliminate the fuel and oil costs associated with motorized pumps and reduces the crop damage and income losses associated with mechanical breakdowns and interruption of the fuel supply. The treadle pump is simple and efficient. If the pump is properly adjusted and maintained, the pump can be operated several hours a day without tiring the operator. The leg muscles, which are the most powerful part of human body, provide the power to drive the pump. Moreover, the pump is operated in a natural way, as walking.
The treadle pump can raise water by suction and by pressure, just like a motorized centrifugal pump. It can also pump water through a distribution pipe. The pump can be used by one adult only. The total vertical distance that water can be pumped is limited by the total weight of the pump operator. One adult weighing 50 Kg. can pump water up to 8m to 16m vertically.
PRODUCT GENERAL DATA
Following two types of models are available.
Galvanized Steel Treadle Pump with Cam & Chain arrangement
B) Galvanized Steel Treadle Pump with Pulley & Steel rope (Figure A). arrangement (Figure B).
CONSTRUCTION OF PUMP
Essentially the pump has following parts
The cylinders of the Treadle pump are made from mild steel 2mm sheet, which are rolled around and subsequently arc welded, while the Mandrel remains inside the cylinder. This method produces cylinders, perfectly round & smother. The first part of the pump body is the valve plate, which is the top of the valve box to which the Cylinders are welded. The cylinders are placed at the centre on the valve box. This is done to provide room inside the cylinders for seating of the Inlet/Outlet valves. The whole body and other metal parts are hot dip galvanized to minimize the effect of rusting on the metal parts as these parts are always in contact with water.
The pistons of the Treadle pump consist of two Rubber cups, which are held together by a z clamp at the end of the piston rod. A steel washer is placed between the two Rubber cups. The upper cup faces towards the top of the cylinder. It seals the Piston when the pump is acting on the suction stroke, while the Piston is moving upward. The lower cup faces towards the bottom of the cylinder, it seals the piston when the pump is acting on the Pressure stroke, while the piston is moving downward. Since the Rubber cups are flexible, they expand against the Cylinder as a result of atmospheric pressure (for the upper cup), and the pressure of the water inside the cylinder (for the lower cup), thereby sealing the piston.
Four rubber valves are used in the Treadle pump, (one Inlet and one Outlet valve in each cylinder) all the valves are simple Check valves which open/close in response to the water pressure acting upon them. The Outlet valve opens away from the cylinder and lets water out of the cylinder when the piston is moving down ward. The Inlet valve opens in to the cylinder and lets water in to the cylinder when the piston moves upward. The two Inlet valves draw water from the Inlet chamber of the valve box that connects it with the Intake pipe. The two Outlet valves discharge water into the outlet chamber, connected to the outlet pipe of the pump.
Treadles are made of rectangle hollow pipe, with broad chequered plates, duly hot dipped galvanized to provide firm grip to user's foot.
CAM & CHAIN ARRANGEMENT (FIG. A)
A cam system has been introduced for up and down motion of Treadles. Cam is fabricated of mild steel plate/pipe with Plastic bush for free and friction less movement of Treadles. Chains are used to link treadles with pistons. Axle shaft made up of Mild Steel round is used with Plastic Bush for free movement of Cam & Chain arrangement.
5a. PULLEY & STEEL ROPE ARRANGEMENT (FIG.B)
A pulley & steel rope system has been introduced for Up and down motion of Treadles. Pulley is made up of Cast Iron round for free and friction less movement of Treadles. Steel rope is used to link Piston. Treadles & Pulley fitted on Axle shaft of the fixed block.
T-Handle is made up of mild steel hollow pipe Round/Square duly of dipped galvanized.
At several occasion, users find problems of "priming" in Treadle pumps during start up which consume great deal of their energy. This problem can be eliminated by using a foot valve at the bottom of Suction Hose.
Operation Features :
PEDALING TO PROSPERITY
A SHEAF OF BENEFITS
Following recommended spare parts are required with each pump for two years operation
TOOLS AND ACCESSORIES
Following recommended tools & accessories are required with each pump for two years operation :
One set of Installation, Operation and Maintenance manual in English language shall be supplied with each pump.
We recommended that the Pump should always be procured along with Suction & Delivery Hoses so that user receives right type of Hoses, in order to achieve more satisfactory performance. Please Note : "Sefex" make this pump complete with Suction & Delivery Hoses. We are well known for the quality products. We manufacture products related with Water management. We are exporting our products worldwide. "Sefex" is the first organization which was accredited with ISO certification for hand pump's manufacturing. Apart from hand pumps like India Mark II, India Mark III, Afridev, Malda, Walimi, Direct action Tara shallow well etc. "Sefex" also makes uPVC Casing pipes/ Strainers, Rigid PVC Pipes, Micro Irrigation systems etc. (including Rain Guns.) and Pressurized Galvanized Steel Treadle Pump to irrigate small area of crops. Presently "Sefex" is the only organization manufacturing Treading pumps complete with Suction & Delivery Hoses, under "Sefex" brand.