MEASUREMENT & MONITORING
REG FLOW RESTRICTORS
KOBOLD
SMART MECHANICAL
FLOW CONTROL FROM
KOBOLD INSTRUMENTS
One of the main benefits of Kobold’s REG flow restrictors is that
they provide precise mechanical flow control and conditioning, so
operate without any electrical power supply. They also maintain
the constant flow rate of fluids with great accuracy (± 0.2 L/min)
regardless of fluctuating inlet pressure. By using an impressively
simple but unique principle, combined with precision engineered
components the REG delivers quality and reliability ensuring lifelong
and maintenance-free use.
HOW IT WORKS
With the REG the constant flow is realized by means of stainless
steel spring plates (the so-called control orifice) and a ring or control
funnel arranged thereafter. Depending on the differential pressure,
the gap between control panel and ring varies. This keeps the flow
rate constant. Depending on the flow rate, one to four control panels
are used in different arrangements.
IN COMPARISON
The REG is unlike restrictor products from other manufacturers.
Usually they use a combination of rubber and metal discs, each with
a round cavity in the middle. Water pressure compresses the elastic
rubber disc, which changes the diameter of the cavity and thus
regulates the flow; however, this only works as long as the rubber
elasticity is intact! Due to temperature, chemical influence and
aging, the molecular structure of the rubber changes over time and
as a result, the elasticity is lost, causing hardening of the rubber and
therefore the flow cannot be regulated or guaranteed. This condition
becomes problematic and above all expensive if this characteristic is
underestimated or not pointed out.
With the REG the maximum flow rate per controlling element is 40 l /
min. There are options available with multiple elements in threaded
and flanged connections, available in brass and stainless steel with
a maximum differential pressure of 10 BAR. Thread connection
sizes are ½ and ¾ male and female. The available flow rates (Single
Element) are: 0,5, 1,2,3,4,6,10,12,14,16,18,20,25,30 and 40 l/min.
With the REG, Kobold maintains a high degree of success in a wide
range of industrial applications around the world.
REGs are ideal for those applications where a constant flow rate is
needed despite pressure fluctuations in the system, e.g. by switching
on and off of consumers.
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PECM Issue 35