Air control unit

For trouble free operation of an air operated diaphragm pump the control valve is of major significance. The control valve is responsible for the distribution of air in the individual chambers and thereby determines the operation of the pump

Around the world ADB BOXER air operated diaphragm pumps are subjected to a vast variety of temperatures, pressure fluctuations, full load and intermittent operating conditions. This places high demands on the air control unit.

In order to meet the requirements of industry , intensive research and development work has been performed. Functional safety and low maintenance requirements were major objectives.

ADB BOXER air operated diaphragm pumps generally are equipped with internal coaxial air control unit.

Benefits at a glance:

• Freezing virtually eliminated
• Oil free operation
• Insensitive against contaminated compressed air and humidity
• No dead centre
• Low maintenance cost
• Suitable for outside applications
• Economical
• Durable

Pump feature

The range of ADB BOXER diaphragm pumps features a internal control unit that guarantees faultless operation even with low-pressure compressed air supply (min 2 Bar). Air chamber volumes and airways are carefully designed to optimize efficiency.
Speed and flow rate can be easily adjusted by the regulating air flow, whilst, head can be adjusted as a function of compressed air supply pressure.

Diaphragm materials

Diaphragms are the components subjected to greatest stress during suction and pumping when they must also withstand the liquid’s chemical attack and temperature. Correct assessment and selection is therefore crucial for diaphragm service life, investment decisions and maintenance costs.
A modern process of design, destructive testing and careful analysis of results has enabled ALPHADYNAMIC to develop LONG LIFE new generation diaphragms. the shape and profile of these products provides a greater working surface and improved load redistribution , thus reducing material stress and yield to a minimum.

NBR
	Versatile multi-purpose diaphragm for oil containing slurries Applications: good chemical resistance against mineral oils, grease and fuels. Application temperature range: -15C - +90C
EPDM
	Versatile multi-purpose diaphragm for highly aggressive chemicals good acid, alkaline and abrasion resistance as well as good flexibility even at low temperatures. Additional application chemicals hot water , solvents and alcohols Application Temperature range: -25C - +90C
HYTREL®
	Good abrasion resistance. ideally suited for food processing where USDA and 3A standards are not required , the HYTREL® meets the FDA standards for food processing and food service industries. Application temperature range: -40C - +130C
SANTOPRENE®
	Versatile multi purpose diaphragm with very good wear characteristics. Applications : Water , acid, bases , oily liquids and greases. Application temperature range: -40C - +120C
PTFE®
	Versatile multi-purpose diaphragm subjected to a double heat treatment in order to increase elasticity and service life. Applications: Chemicals and corrosive agents showing excellent resistance to high temperatures. Application temperature range: +4C - +260C
Housing Materials
Polypropylene
	Is characterized by its high resistance against acids and many water soluble ,inorganic acids and alkaline. Also available as electically conductive housing material Application temperature range : 0C - +60C
PVDF / ECTFE
	Excellent chemical and temperature resistance with aggressive media and chemicals , also available as electrically conductive housing material. Application temperature range: -20C - +95C
Aluminium
	Versatile housing material with good allround properties Application temperature range: -10C - +95C
Stainless steel 316L
	High level of chemical resistance , preferably used in chemical industry. Applications temperature range: -25C - +95C