Design Features :

• The pump is made for coupling with electric motor, high speed diesel engine.
• The direction of rotation is anti-clockwise viewing from drivers end.
• The pump is rigid in construction, vibration proof and easy in handling.
• The pump is supported with robust ball bearings and Tapper Roller bearings as per customers requirement.
• Casing is made of high quality close grained cast iron with well-designed volute way ensuring smooth flow with gradual changes in velocity and is hydraulically tested before final assembly.
• Impeller is of single end suction, shrouded type made of special Grey Iron with high finish and impeller is dynamically as well as statically balanced.
• Shaft is made from high quality steel and accurately ground finished within the manufacturing tolerances, and the size of the shaft is designed for transmitting maximum power without vibrations.
• Supporting frame is robustly constructed to carry shaft, single as well as double bearings and brass bush.
• Stuffing box is of liberal depth for accommodating sufficient gland packing. Easy access to stuffing box is an outstanding feature of Supporting Frame, Faciliting convenient replacement of Gland packing. 

APPLICATION 

• "Sefex" Centrifugal Power Driven Pump is desinated for handling both clean and non aggressive water.
• Water supply from fountains, lakes, rivers; water transport through the pipelines over long distances.
• Irrigation of the crops through channels.
• Water dewatering from the industrial channels with pipes, channels. 

Salient Features :

• Ideal VLOM (Village Level Operation and maintenance) design developed keeping in view maintenance problems.
• Capable of lifting water from depths upto-approx 45 Metres.
• Fully fabricated steel structure duly hot dip galvanised.
• Adjustable handle to suit varying installation depths.
• Injection moulded special grade plastic bush bearings easy to replace at village level.
• Interchangeable plunger & foot valves easy to extract without removing riser pipe.
• Non-corrosive underground components capable of handling corrosive water situation there by giving longer life.
• Easy installation and inexpensive maintenance at village level-even women can handle.
• Light weight UPVC riser pipes and hence easy to handle. 

Pump Head Assembly 

• Fully fabricated steel structure duly hot dip galvanised. 
• Adjustable handle providing different handle settings to suit different Cylinder setting depths. 
• Conical flange with conical rubber grommet provides better holding grip on UPVC riser pipe.
• Two options for pedestal design are available : Pedestal for concrete stand and Pedestal of India Mark II design with either 3 legs mounting or flange mounting arrangement. 

• Fulcrum & rod hanger pins are supported on special grade plastic bush bearing which are very easy to replace at village level.
• Fully covered to avoid any contamination of water. 
• Design offer a stroke length of 225 mm. 

while we are appreciated in the industry for offering cost-effective vertical water turbine pumps, we are counted amongst the major manufacturers, exporters and suppliers of pumps, and we only offer reliable products. while our range of vertical water turbine pump promises low maintenance cost, high performance, and optimum functionality, we package the pumps using premium packaging materials and ensure safe delivery. we also accept bulk orders by the clients. we are based in gujarat, india.

details

• typical applications available - semi-crossed, flat belt driven pump- by mens of a slow speed vertical diesel engine.


• v-belt driven pump - powered by an electric motorl both motor and pump are mounted on a fabricated steel base. pump fitted with right angle gear drive - powered by a multi-cylinder medium speed diesel engine.


• alternatively it could be driven by an electric motor. a further semi-crossed, flat belt driven pump operating on an open well-driven by a slow speed horizontal diesel engine. (a semicrossed v-belt could replace the flat belt).


• we are manufacturing 3" / 3.5" / 4.5" vertical turbine pumps.

Vertical Turbine Borehole Pumps : 

• High Efficiency 
• Easy to Install and Dismantle
• Minimum Maintenance Costs-no Attention Required Whilst Pump is Running
• Driving Power Requirements are Reduced to a Minimum
• All Parts are Replaceable 

The Discharge Head

The Sefex drive and discharge head is made from high grade cast iron and it is mounted at the top of the borehole or well. The head carries all the column pipes which are linked through the head to its horizontal discharge outlet. Inside the discharge head a generous area is provided to allow easy flow of water - this also helps to reduce friction losses to a minimum. 

The head shaft passes through the whole depth of the head and is connected to the line shafting which transmits the rotary drive to the impellers. Lubrication of the bearings in the discharge head is effected by periodical injection of grease or circulation of oil. The stuffing box is conveniently located in the head and is easily accessible for servicing. 

Adjustments to the impeller are made by means of a regulating nut on top of the head. A non reversible type pulley is fitted dowels block any reversal motion as soon as the pump stops rotation a clockwise direction. 

The construction of the head allows various alternative drives to be used directly coupled, flat or V-belt, and right angle gear type using flexible shaft or pulley

• Pulley
• Adjusting nut
• Boaring housing assembly
• Head frame
• Lock nut
• Head shaft
• Top bearing
• Bearing Spindle
• Bottom bearing
• Stuffing cover
• Stuffing
• Priming Funnel 

The Column Stage

Each stage includes :

One part with two forged and machined flanges welded on each end. The pipe is of standard length (2.5 m or 3m according to customers Requirement)

A top quality stainless steel transmission shaft, ground and polished and tested for perfect straightness so that it ensures minimum vibration and longer bearing life.

The shafts are connected by couplings. A spider bearing assembly provided with a special water lubricated rubber center bearing is bolted between the pipe flanges at intervals (2.5 m or 3 m according to the column length) to ensure accurate concentricity and alignment of the line shaft. These bearings are primed by means of the funnel mounted on the discharge head. Priming is only necessary when the pump has been standing idle.

• Top column flange
• Spider bearing
• Column shaft
• Column Pipe
• Coupling
• Rubber bearing 

The bowl assembly

This section, the HEART of the pump, is of the multi-cellular type and is always submerged below water level. Of a very practical design, it is especially suitable for narrow wells and boreholes. 

The helico-centricugal type impellers are made of high grade cast iron and balanced. They are built up on an extra strong stainless steel shaft and securely locked in position by a double cone tightening systems. 

A water lubricated rubber bearing is fitted into each of the bowls between the impellers - these bearings also act as stabiliser guides for the shaft.

The curve of the bowl diffusers is designer to allow water to flow freely through the bowl stages without turbulence - this reduces friction loss to a minimum and gives the maximum output. 

• Top bowl
• Taper impeller cone
• Intermediary bowls
• Suction manifold
• Strainer 
• Lock nut
• Bowl rubber bearings
• Impellers
• Footvalve assembly 

Typical applications available: 

• Semi-crossed, flat belt driven Pump- by mens of a slow speed vertical Diesel engine.
• V-belt driven Pump - powered by an electric motorl Both motor and pump are mounted on a fabricated steel base. 
• Pump fitted with right angle gear drive - powered by a multi-cylinder medium speed Diesel engine. Alternatively it could be driven by an electric motor. 
• A further semi-crossed, flat belt driven Pump operating on an open well-driven by a slow speed horizontal Diesel engine. (A semi-crossed V-belt could replace the flat belt).