SUBSYSTEMS
ALMATEC Maschinenbau GmbH www.almatec.de
E-Series pumps for solar cell manufacturing
The new ALMATEC E-Series line of plastic air-operated diaphragm pumps has been designed to meet all requirements of the solar industry. The solid-block construction increases the strength and life cycle of a pump.
ALMATEC E-Series pumps consist of only three solid housing parts, the center housings and two side housings, which are made of polyethylene (PE) or PTFE. Both materials are ideal for solar-cell production. PE pumps are used for the abrasive silicon carbide slurry. PE has a very high abrasion resistance, which is for example 7 times higher than polypropylene (PP) and even 1.6 times higher than that of steel. The E-Series pumps made of PTFE, which has an excellent chemical resistance, are used for the chemical supply (acids, caustics) within the solar-cell manufacturing. Thinking of these high purity applications it is very important that the exterior of the E-Series pumps are free of metal.
The E-Series pumps are available in seven sizes with maximum delivery volumes up to 48 m3
/h (800 lpm / 210 gpm). They are
self-priming and provide gentle displacement of fluids. The E-Series also features a patented maintenance-free air-control system, called Perswing P®
, which does not require
maintenance, operates without any lubrication whatsoever and is made up of no more than four different parts.
The diaphragms (without external discs) and valve balls are
Asahi/America, Inc www.asahi-america.com
PTFE Valve
Asahi/America, Inc.,has developed a PTFE valve that facilitates the wet process function during the manufacturing of solar cells and silicone production, with the introduction of the Dymatrix Multiport Valve Manifold in 2009.
Customizable to almost any flow configuration, The Dymatrix Multiport Valve (MPV) Manifold eliminates tubing, fittings and dead space. The valve's design features a unique, zero dead leg diaphragm with full flush capabilities making it ideal for transferring of chemicals
and high purity water during the wet process phase of etching and cleaning of wafers and solar cells.
The PTFE body and diaphragm are resistant to highly aggressive acids and chemicals used during these processes.
The PTFE valve bodies are machined on new CNC equipment dedicated to high purity plastic machining. The high cycle life of the valve ensures reliable performance in critical applications, and its compact design fits perfectly into tight equipment.
Market-tested in a number of photovoltaic and semiconductor plants, the Dymatrix MPV manifold is available in a large variety of inlet/outlet size and connection style combinations. Asahi/America manufactures the Dymatrix MPV manifolds in their Malden, MA headquarters enabling them to meet
even the most aggressive delivery deadlines.
Pneumatic actuated options are available and include normally closed, normally open, air-to-air as well as manual multi-turn to enhance the functionality of this revolutionary new valve.
available in EPDM, PTFE and NBR; in applications where a higher dry suction capacity is required, cylinder valves are available as well for fluids not containing solids.
The E-Series also carries on another important tradition of ALMATEC pumps, as the pumps can be equipped with various extra options to customise the pump to the requirements of the given application: The pumps can be supplied with options like barrier chamber system, stroke counting, diaphragm monitoring, flange connections, drainage or pulsation dampener.
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www.solar-pv-management.com Issue II 2010
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