CSV Does the Job at
New Soft Drink Plant
Another recent project that Hydro Logic Inc., a
hydrogeological consulting firm in Boise, Idaho, completed
using a Cycle Stop Valve was a water supply
system for a state-of-the art $31 million soft drink
manufacturing plant that opened in Nampa, Idaho,
in 2007.
A producer of soft drinks and bottled water, the
water supply plant for Nagel Beverage Co. Inc. can
provide water for a multitude of uses, at a constant
pressure. The range of flow rates required varies from
5 gallons per minute to a maximum of 530 gpm and
is regulated by just one CSV.
“It is quite a versatile and clever fixture that can
deliver 5 gpm to 500 gpm at a constant pressure
while protecting the pump motor from cycling, which
shortens pump motor life more than any other operational
circumstance,” says Ed Squires, president of
Hydro Logic.
Nagel Beverage uses two separate water treatment
systems: a nanofiltration system and a reverse
osmosis system. The initial setup required the CSV to
provide the correct pressures for the reverse osmosis
system. The nanofiltration system requires 400 gpm
and the reverse osmosis system 130 gpm. The discharge
pressure of Nagel Beverage’s 6-inch CSV3B
is 62 psi on a 30 hp pump, with the pressure switch
shutoff at 80 psi.
“It’s sort of a batch-and-run operation,” says
Larry Wheeler, Nagel Beverage’s project manager.
“We start out with a rather slow but steady flow in
the 80 to 120 gpm range but, when everything gets
rocking-and-rolling, it’ll jump up over 500 gpm. The
nanofiltration system is designed for future growth
here, and the CSV will allow for this expansion when
it comes. We have had no problems with the CSV,
and coming out of the pump, that’s the first thing
that we go through.”
Squires considered using a variable-frequency
drive unit in this application, but he says its complexity
was an issue.
“VFDs have many, many applications,” Squires
says, “but they are relatively technical and, like other
computerized equipment, there are glitches. Also,
without an across-the-line electrical bypass and a
separate control panel, if the VFD has a problem, you
don’t have any water. With the CSV, this is one less
potential weakness in the system. Given the wide
range of flow requirements for this project, we felt
the CSV was the best fit. It is quiet and takes up very
little space.
Vance Miller, president of Nagel Beverage, admits
he was somewhat skeptical of Squires’ recommendation
to use a CSV at first. Looking back, Miller says,
“I cannot envision a system that could work better
than the CSV.”
Because high quality ground water is its
lifeblood, Nagel Beverage had Squires design and
supervise the drilling, construction, and development
of its supply well and the discharge well head
plumbing. The CSV regulates all of Nagel Beverage’s
varied water demands, including wash-down, recycling,
commercial, and domestic uses.
“This sort of thing doesn’t get a whole lot of
headlines in the company. We deal with issues. This
is a non-issue,” Wheeler says. “I just wish everything
was made that way. We’re living in an age where it
seems like everything is designed with either no
quality control or with planned obsolescence in mind.
This is just a simple piece of equipment that functions
day in and day out without any adjustments or
maintenance.”
NGWA.org Water Well Journal May 2008 21/
