Bareshaft Pump
21
WATER
Water Quality Requirements
The quality of water that is supplied to your Jet-
stream pump can have a direct impact on perfor-
mance. Items like dissolved solids and pH values out
of the allowable range can, either by themselves, or
together with other properties of the water, lead to
premature failure (such as cracking) of pump com-
ponents and related accessories.
Suspended gasses (tiny bubbles) in the water can
also lead to premature component failure. These
gases can sometimes be detected visually by in-
specting the water in the inlet tank for tiny bubbles or
a milky appearance.
As part of the installation and or operating proce-
dures of this pump, an expert that specializes in
water quality must perform a water quality test. If
your water is found to exceed any of the allowable
measurements in the chart below, consult a special-
ist in water purication and conditioning.
Recommended water quality levels:
Substance
Maximum Allowed
(mg/L)
Silica 1.0
Calcium 0.5
Magnesium 0.5
Iron 0.1
Manganese 0.1
Chloride 5.0
Sulfate 25.0
Nitrate 25.0
Carbon Dioxide 0
Total Dissolved Solids 50.0
pH 6.8 – 7.5
Specic Conductivity 50 micro-mhos/cm
Note: Boiler water additives with either
ammonia or amines are not allowed.
Note: If water that has been treated by either
reverse osmosis or deionization is to
be used in your pump, it is important
that it does not have a total dissolved
solids (TDS) reading of less than 0.5
ppm. Water with a TDS reading of 0.5
ppm or less has been known to attack
carbide components such as plungers
and back-up rings.
Fluid Compatibility with
Jetstream Pumps
Jetstream pumps are designed and built primari-
ly for pumping water at various pressure ratings.
Jetstream does not have a compatible fluids list at
this time. The use of any fluids other than water void
warranty.
There are special considerations for seawater ap-
plications. Please consult the factory for a specic
application.
There are instances where fluids besides water to be
pumped are considered for use in Jetstream pumps.
Jetstream does not approve the suitability of their
pumps for use with any other fluid besides water, for
the following primary reasons:
• Safety and Environmental: Water leakages in
the high pressure system, pump, waste water,
bypass water, etc., are normally quite easily con-
tained (if necessary) and/or produce zero-risk to
low-risk situations.
• Corrosion Resistant Pump Components: The
stainless steel components in the fluid handling
portion of the Jetstream pump offer good corro-
sion resistance to water.
• Operational Characteristics: The plunger seal-
ing elements are designed to be compatible with
and exhibit long operational lifetimes when using
clean cold water. Other fluids can signicantly
shorten the life of the packing material through
any number of failure mechanisms, including
chemical reactions or dissolving the packing
material, or offering inadequate lubrication to the
packing. High temperature water is also prob-
lematic, as the packing can only tolerate approx-
imately 125°F water. At elevated temperatures
the packing life decreases substantially.
Suggestion: To understand the effects of a fluid on
pump internals and fluid conductors, it is suggested
to put a univalve part, an o-ring from the valve, a
packing set and a piece of high pressure hose into a
jar of this fluid and observe the effect over time.
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