TPi May 2014

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May 2014 Tube Products International 29
products & developments
Award winning metering ball valve
Ham-Let’s metering ball valve (MBV),
which incorporates both metering and
shut-off functions in one unit, has been
patented in the USA, and has won the
company recognition for its innovative
technology.
The MBV series valve combines an
accurate micrometer control mechanism
for gases and liquids with a sealing
mechanism in a single unit. It is easy
to install and does not require multiple
connectors and pipelines. It is reliable
and easy to operate, and can reduce the
length of the line in the system.
The valve is a single unit that replaces
the two separate valves previously
required, decreasing installation and
maintenance costs while reducing the
risk of faults. Flow Magazine’s 2012
winner of innovation award, the MBV
was awarded US Patent USPTO
8590569, and patents have also been
applied for other markets.
“The MBV series delivers industry’s
highest degree of accurate metering flow
for moderate pressure applications,”
said Ham-Let’s VP engineering and
R&D, Felix Shestatsky. “It features an
innovative and unique shut-off capability
which allows full control of the process,
from extra fine regulation to a complete
valve shut-off.”
With the choice of three precision
stem tapers enabling metering at flow
capacities as low as Cv=0.0001 with
up to 11 handle turns, the MBV series
meets the demand for highly precise
flow control. The MBV offers five
different O-ring materials providing wide
temperature and chemical coverage,
making it suitable for analytical
instrumentation industries.
“The technology used in previous
micrometer valves is based on an
extremely delicate needle that is easily
broken and cannot guarantee that the
valve is completely sealed,” said Mr
Shestatsky. “In order to hermetically
seal a system, the system engineer
would have to add a second valve –
most commonly a ball valve – to detach
and seal the line. This entailed many
disadvantages including extra costs,
complicated installation, additional
pipelines, multiple potential leakage
points and more.”
Ham-Let – USA
Ham-Let’s metering
ball valve
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