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IRIS Diaphragm
Control Valve
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Flanges
DN 25 - 600 mm (1 24)
Max. service pressure
3 - 6 bar
Max. service temperature
120ēC (248°F) Higher temperatures available on request.
Application
Gas, clean liquids or with suspensions, powders.
Advantages
Centered and symmetrical flow, stable regulating characteristic
without hysteresis, flow measurement and regulation possible and
patented.
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IRIS Diaphragm Control Valve -
Characteristics
Advantages
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Robust construction
Designed for continuous operation, suitable for various
duties. Simple installation and commissioning.
Hysteresis-free and excellent regulation characteristics:
are prerequisites for regulating tasks. This is achieved by
the continuously variable aperture from 0 100%, similar to
the IRIS diaphragm of a camera, always maintaining a central
flow and by an enhanced segment edge design.
Non-clogging
due to the free, central flow design and the automatic,
self-cleaning feature of the
segment edges during valve operation. Flushing
connections are provided.
Examples of applications:
Air, sugar, suspensions, sewage, sludge, paper stock,
drinking water, etc.
Energy cost savings and low noise emission
through enhanced design.
Fixed throttling apertures and imprecise regulating methods
cause unnecessary pressure losses and energy costs. Due to
the almost free passage and low turbulences in our valve
these are reduced to a minimum. Because of an advantageous
basic characteristic, we can operate in an energy saving
manner, i.e. with optimal valve apertures.
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BS Actuators
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Technical data and materials
used
Sizes: DN 25 DN 600
Flanges:
PN 10 to DIN 2501
Max. operating pressure: Acc. to size 3 6 bar
Max. temperature: 120 °C
Materials - Casing parts:
Cast iron; st.st. or zinc-free bronze
Materials - Segments:
Bronze, hard-chrome plated st.st. (option hardened)
Actuators:
Hand lever, hand-wheel,
electric or pneumatic
On request: ANSI
flanges RF 150; op. pressure > 6 bar ; temperatures > 120
+C ; special materials
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BS - IRIS
regulating valve with integrated flow measurement
system
The collaboration between
EGGER and the ABB company allows us to offer our clients
a simple and compact solution. Thanks to the centered
flow and the leveled edges of the orifice, the compact
SENSYFLOW measuring system of ABB Automation can be
directly installed at the entrance of the valve. The
measuring principle is based on the mass of the gas,
thus rendering the system independent of the pressure
and temperature of the gas.
The assembly of the IRIS regulating valve and the gas
flow measuring system SENSYFLOW does not need a straight
run, neither on the inlet nor on the outlet side, but in
that case it has to be calibrated on the certified test
bed. Our supply includes for a German Service Test
Certificate of Calibration (DKD).
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