 Walimi Deep Well Hand Pump manufacturing as per SKAT / HTN Specification
Walimi Hand Pump is available with two different cylinder sizes, suitable for lifting water from depths of 5 m. to 40m.
Stroke length of the pump is 160 +/ - 5.0 mm.
Cylinder of 3" is recommended for depths between 5 to 25 mts. and the discharge is 35 ltrs per Minute of 40 continuous strokes.
Cylinder of 2" is recommended for depths between 20 to 40 Mts. and the discharge is 15 ltrs. per Minute of 40 continuous strokes.
The Walimi Hand pump is suitable for boreholes with casing sizes of nominal bore 100 mm (4"), 125 mm (5") and 150 mm. (6") internal diameter. For exact positioning of the rising main, the corresponding centralizes need to be placed at every pipe joint and one at the cylinder.
If the Walimi Handpump is to be used in dug wells, no suction pipe and centralizes are required. To avoid swinging of the rising main during operation, precautions to be taken for locating the riser pipes inside the well and the "Anti-swing pipe" has to be fixed.
Features
- The bolts and nuts duly electroplated with passivation are used which conform to relevant parts of ISO 4014 / 4017 for bolts and ISO 4032 for nuts.
- All plastic pipes are made of High Impact Polyvinyl Chloride (PVC-HI). Dimensions and tolerances conforming to ISO 11922-1/-2, "Thermoplastic pipes for conveyance of fluids".
- The steel plates, Sheets and round bars are conforming to designation of ISO 630, "Structural Steels".
- The Steel Pipes used for the construction parts are conforming to designation of ISO 559/9330.
- Dimensions shall conform to ISO 4200.
- The Plastic components (other than pipes) are made of the following materials.
- POM (Polyacetal)
- PA (Polyamide)
- Rubber components like Bobbin and Seals shall be made of (Acylo-) Nitrile-Butadien Rubber (NBR) conforming to BS 2751.
- Rubber components of minor importance, like Rubber cushion, Centralizers and Sealing plate can be made of Nitrile or Natural Rubber, conforming to the standards.
- The Stainless Steel components are made of X5CrNi 18-9 (ISO), Type 304 (AISI) or Mat. No. 1.4301 (DIN).
- The Welding of all steel parts is fabricated in accordance with ISO 9692 and ISO 9956-2.
The following are hot dip galvanized according to ISO 1461 protection against corrosion.
- Head assembly
- Handle assembly
- Rod housing assembly
- Stand assembly
Schematic diagram of
"Walimi" Deep Well
Hand Pump |
- HEAD ASSEMBLY
- HANDLE ASSEMBLY
- ROD HOUSING ASSEMBLY
- STAND ASSEMBLY
- ANCHOR ASSEMBLY
- CASING PIPE
- RISER PIPE
- CONNECTING ROD
- CYLINDER PIPE
- PLUNGER ASSEMBLY
- FOOT VALVE ASSEMBLY
|
Nomenclature
A brief description of the major pump components are as under :
- Pump head assembly
- Handle assembly
- Stand assembly
- Cylinder assembly
- Pump rod arrangement
Design Options
- Optional designs are in the Walimi Hand pump
- For different rod housing,
- Short pump stands and long pump stand
- Short spout and long spout
Installation tools
- Pipe clamp
- Rod catcher
- Rod hanger
- Special spanner
- Installation Bracket
- Pipe wrench
*Data given are recommendatory, there may be variations under actual field conditions designs and specifications are subject to change without prior notice.
* Design and technical specifications are subject to change without notice.Back to Hand Pumps |
