Iris® diaphragm control valve IBS For the economical and silent control of liquids and gases. Segments are retractable into the valve body allowing a free passage when the valve is completely open, to guarantee low-pressure losses and a high energy-saving potential. The high-precision energy-saving valve for industry and wastewater technology. Advantages Energy-saving flow control Due to its special design with six centrally closing segments, Iris® diaphragm control valves enable a highly energy efficient flow control with low-pressure losses. High flow capacity Cv (Kv) Its flow-optimized design, as well as segments completely retracted in the casing when fully open, provide a very high flow capacity Cv (Kv). Turbulence-free flow control Flow centric design without fixed components or restricting sections, Iris® diaphragm control valves regulate with stability and accurately with little turbulence. Applications · Process gases and process liquids · Aeration air in wastewater treatment plants · Slurries and viscous materials · Cooling and drinking water · Sugar suspensions · Paper pulp and fibrous suspensions Facts & Figures Nominal dimensions: DN 65 –  300 mm 2.5 –  12“ Flange: EN 1092-1 B1 PN 10 EN 1092-1 B1 PN 16 ANSI B16.5 150 FF Pressure: up to 10 bar / 150 psi Temperature: up to 180 °C / 356 °F Corrosion protection: C5-I /stainless steel Materials: · Casing: GG, 1.4408 · Segments: Bz hard chrome- plated, 1.4404 · Special materials and temperatures: on request Regulation accuracy The unique design allows for an economic and stable regulation with reliable and hysteresis-free control characteristic over the whole range. Options · Manual operation with a retractable hand wheel · Electric actuator · Quick closing pneumatic actuator with positioner Robust construction The construction is designed for control applications with frequent adjustment and is also suitable for the most demanding fluids. Low-maintenance The self-lubricating spindle nut enables maintenance-free and cost effective operation. Features · Drive support and individual spare parts can be replaced without removing the valve from the pipe. · No inlet and outlet sections required for control. · Space saving due to short installation dimensions. · No spindle feed-through and high quality sealing to atmosphere by double O-rings. Flushing Three connections offset by 90° to each other allow flushing or buffering with liquids or gases. Also suitable as drainage connection e.g. for condensate. Position indicator The valve position can be precisely r

Applications Iris® diaphragm control valves are characterized by a flow path, which is always centred. The passage can be varied continuously, similar to a camera aperture. Thus, constant flow rates may be regulated in any position. The ideal control characteristic according to DIN EN 60534 and its low-pressure losses make the Iris® diaphragm control valve a reference to an energy-saving valve in many industries. Here is a small selection of typical applications. Aeration in a wastewater treatment plant Used to regulate the aeration, this valve has been proven thousands of times at wastewater...