Emile Egger & Cie SA
Iris - Diaphragm Control Valve
Energy saving valve for the precise and economical control at low loss of pressure of liquids and gases that can be either clean or contain particles.
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wastewater treatment
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- Air for aeration in wastewater treatment plant
- Gases
- Municipal and industrial wastewater
- Slurries and viscous materials
- Paper pulp and fibrous suspensions
- Pellets with a particle size over 0,5 mm
- Sugar suspensions
- Drinking water
- Highly precise control of the flow rate through concentric Iris® diaphragms (similar to a camera diaphragm).
- Energy-saving and low-noise control valve due to its free centric passage.
- Maintenance free
- Nominal dimensions:DN 25 - 400 mm 1 - 16"
- Pressure:up to 10 bar / 150 psi
- Temperature:up to 220 °C / 428 °F
- Materials:Casing: GG, 1.4409, 1.4588 Segments: Bz hard chrome-plated, 1.4404, 1.4529 Special materials on request
- Energy-saving flow control
- No hysteresis
- Robust construction, suitable for frequent start-stop
- Low pressure losses due to larger open channel
- High flow capacity Cv (Kv)
- Turbulence-free across the entire range of flow regulation