Aluminium AODD

Aluminium AODD ASTRA pumps

The current range of aluminium made pumps includes sizes from 1/2″ inch to 2″ inches.
Aodd aluminium made pumps address liquids with neutral pH.
Casings and manifolds are die cast and sport well finished surfaces with modern and attractive design,
The quality of cast parts is laboratory checked to assure structural integrity, absence of porosities, and high degree of  internal an external finishing.
The central casing is made of injection moulded glass fibre reinforced polypropylene for its broad chemical resistance to corrosive chemicals and to corrosive atmospheres.
The techno polymer POM  replaces the aluminium alloy in all reversible pumps of  sizes, 1/4″ 3/8” and 1/2” ( models 25R, 38R, 50R) ; POM has similar chemical resistance of aluminium.

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ATEX

For the applications requiring compliance to ATEX Zone 1 ( Serie II 2/2gd IIB at 135°C)  the aluminium pumps are fitted with conductive central casing made of PP reinforced with carbon fibres. (PP+C).

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Diaphragms

Thermoplastic diaphragms offer high resistance to chemical corrosion and abrasion and deliver long life cycles;
the broad range of applications these materials are adequate to, eases the choice of the correct pump execution for the specific application.
Diaphragms are available in Keyflex®, Santoprene®, and  Polyurethane.

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Elastomeric diaphragms deploy blend of rubbers embedding nylon reinforcing mesh designed to increse their mechanical resistance.
Most common elastomeric rubbers are nitrilic (NBR) and ethylene propylene diene monomer (EPDM) based.
On request we deliver also fluorinted rubber FKM made diaphragms (e.g.: Viton®).

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PTFE diaphragms, PTFE is the fluoro-polymer material with the broadest chemical resistance. Our PTFE diaphragms are manifactured with special process to be flexible and resistant and are always backed up by a rear diaphragm of thermoplastic rubber, which increases resistance and service life.

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