|
Polypropylene: |
Poly pumps are economical
and suitable for many applications. They provide high fatigue endurance but only fair
abrasion resistance. Polypropylene pumps are light grey in color. |
|
Groundable Acetal: |
This is excellent for
flammable materials, as it is truly a groundable non-metallic pump. Electrostatic buildup
is transferred through the polymer to a single grounding point. Acetal pumps are dark
grey while the Acetal balls are orange. |
|
KYNAR (PVDF): |
Kynar can handle most
fluids not compatible with polypropylene or Acetal. This pump is excellent with Acids,
Bases and Petroleum Based Oils. Kynar provides fair abrasion resistance. The
1/2" Kynar pumps are white in color, while all other sizes are black. |
|
Aluminum: |
Aluminum is an economical
all-purpose metallic pump. It works well with oils and water-based fluids. However,
aluminum should not be used with halogenated hydrocarbons. |
|
Stainless Steel: |
This pump is often
recommended when pumping corrosive materials, however it offers low abrasion resistance. |
|
Cast Iron: |
These pumps offer superior
abrasion resistance and are an alternative in applications where fluid compatibility with
aluminum is a problem. Cast Iron will however rust when exposed to water-based fluids |
|
Teflon®: |
Teflon® is chemically
compatible with any fluid. It has zero moisture absorption, but also has a limited flex
life. Teflon® has no memory and will not handle abrasive fluids as well as other
materials. Teflon® materials will be white in color |
|
Santoprene®: |
Santoprene is a blend of
EPDM and Polypropylene. It works well with abrasive fluids, as well as sulfuric acids, MEK
and many mild bases. Santoprene is often an economical alternative to Teflon®.
Santoprene materials will be tan in color. |
|
Geolast®: |
Geolast is good with
water, oils, mild acids and abrasives. It is an excellent general purpose material made of
a blend of Nitrile and Polypropylene. Geolast materials will be black in color. |
| Buna-N: |
Buna is an economical
material that offers good flex life. It is compatible with water, petroleum based oils,
and many fluids. Buna materials are black with a red mark. |
|
Neoprene: |
Neoprene is heat resistant
and has good resilience and tensile strength. It offers excellent flex life at a moderate
cost. Neoprene performs well with oils, mild acids and some abrasives. Neoprene
materials are black with a green mark. |
|
Viton®: |
Viton® offers good
chemical resistance and temperature ratings. It is compatible with blended or straight
fuels and many chemicals not covered by Buna or Neoprene. Viton® materials are
black with a yellow mark. |
|
Hytrel: |
Hytrel is excellent for
pumping abrasive fluids. It is used with ceramic slip, Acetone, oils and mild acids.
Hytrel materials will be cream in color. |
|
EPR: |
EPR has great high
temperature characteristics. It can be used with some very aggressive chemicals. EPR
materials will be black with a blue mark. |
|
Urethane: |
Urethane has excellent
abrasion resistance. It is used with ceramic slip, slurries, and in mining
applications. Urethane balls are red, while the other urethane materials are clear. |
