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Flow and differential pressure measuring helps to reduce pump energy consumption and facilitates commissioning. Pressure class PN 16 Min. working temperature: 0°C Valve body: AMETAL Valve plug: stainless steel Spindle seal: EPDM O-ring Membrane: EPDM and HNBR O-rings: EPDM Max. working temperature 90°C Water or neutral fluids, water-glycol mixtures. Valve insert: AMETAL and PPS Spindle: stainless steel ¿p insert: PPS Springs: stainless steel