Geotech http://www.geotech.co.uk supplies a wide range of pneumatic, submersible pumps. All are ATEX Zone Zero rated. Ideal for most applications, sizes vary to suit
We start with the smallest diameter: The AP2 about one metre long and fits a fifty-mill borehole. Frequently used in remediation it may be pumping corrosive chemicals so we supply AP2s standard with a stainless-steel case. It also has a stainless-steel body and can be top or bottom fill.
The AP3 pump is also about one metre long and top or bottom fill. This is three-inch (seventy-five mill) in diameter. The case is fibreglass and body and internal components are stainless-steel.
The largest is the AP4 which will fit into a one hundred mill or four inch diameter borehole -- or larger. It is available at one-point-three metres in length down to the shortest, about half-meter long. Shorter pumps are for lower draw down.
As you see, pumps may be bottom filling or top filling to suit the application.
Typically top-filling pumps are used to extract a product like fuel or oil over water in remediation. The top-filling pump has gauze over the top inlet port normally placed at the interface of oil and water. Once liquid has entered the pump from the top the discharge is the same as for a bottom-filling pump. Bottom filling pumps are used widely in landfill applications and with fluids to extract maximum product, including empting chemical and fuel tanks. These pumps will pump three-mill solids in suspension thus extracted some solid product.Because the pumps are operated with compressed air they are very safe and are certified: - ATEX Zone Zero. This is the highest level possible. It confirms their suitability to pump fuel from the tanks in a petrol station or operate in other hazardous, potentially explosive applications.
To avoid chemical attack we ask about application and specify materials from options, to suit.
Geotech Autopumps also known as AP Pumps also have a range of fittings. Liquid discharge is via a standard, thirty-two mill FDP pipe which is readily available. The pump is attached to a wire rope via shackles and hung under the borehole cap at the required depth - allowing retrieval for inspection and servicing as necessary.
Output volumes range between seven litres a minute with an AP2 up to the AP4's forty-five litres a minute.
We estimate flow rates with a graph curve - which depends on pump depth and head of liquid over it. Typical depths are from three to seventy metres below ground level
These pneumatic pumps will work and last for years and years - providing they are serviced regularly. We suggest a three-month visual inspection of a new install. From then on, a six-monthly service -- or longer may be appropriate -- depending on application.
Servicing can be done on site by the user or returned to Geotech for factory servicing.
A service includes stripping the pump down to clean individual components, replacing as necessary then rebuilding and borehole testing.
See: http://www.youtube.com/watch?v=idsJKZDdtJk
To summarise: Geotech supplies ATEX Zone Zero positive air displacement pneumatic, submersible pumps for landfill leachate, chemical or fuel tank emptying and below-ground remediation. Diameters, lengths, top or bottom fill and component material specification options mean they can be tailored to best suit any corrosive or hazardous environment. Servicing is available at Geotech or we can train operators to do it excellently for themselves.
There is more at our website: http://www.geotech.co.uk
For Training Master Classes: Leachate & groundwater pumping, see: -
http://www.geotech.co.uk/master_class_training.php?pageID=75
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Servicing Geotech AutoPumps Pumps is Easyby GeotechTV254 views
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