DIAPHRAGM PUMPS


When choosing a pump for your application please consider the
following materials to identify which are suitable for your product
.

Buna-n -
General purpose, oil resistant. Shows good solvent, oil, water and hydraulic fluid resistance.
Should not be used with highly polar solvents like acetone and MEK, ozone, chlorinated
hydrocarbons and nitro hydrocarbons.
EPDM -
Shows very good water and chemical resistance. Has poor resistance to oils and solvents,
but is fair on ketones and alcohols.
Neoprene -
All purpose. Resistant to vegetable oil. Generally not affected by moderate chemicals, fats,
greases and many oils and solvents. Generally attacked by strong oxidising acids, ketones,
esters, nitro hydro carbons and chlorinated aromatic hydrocarbons.
Santoprene® -
Injection moulded thermoplastic elastomer with no fabric layer. Long mechanical flex life.
Excellent abrasion resistance.
PTFE -
Chemically inert, virtually impervious. Very few chemicals are known to react chemically
with PTFE : molten alkali metals, turbulent liquid or gaseous fluorine and a few
fluoro-chemicals such as chlorine trifluoride or oxygen difluoride which readily liberate
free fluorine at elevated temperatures.
Viton® -
Shows good resistance to a wide range of oils and solvents : especially all alphatic,
aromatic and halogenated hydrocarbons, acids, animal and vegetable oils.

PUMP SIZES
All these pumps are available in sizes from 1/4" up to 3"
Inlet/Outlet sizes, if the size or style is not listed here please
contact our sales team for further details