Series 2/640-0500
Valve closed by spring force in rest position - NC. When the actuator (cylinder) is pressurised the piston (spindle) is lifted of the seat (orifice) directly. Further function like normal open by spring force (NO) is also available. High temperature design up to +400°C with metallic seat sealing and static wills-ring.
Technical informations
Connections
DN50, DN65, DN80, DN100
Pressure
0 bar up to 40 bar
Temperature
-10 °C up to 400 °C
Type of Control
pneum. direct
Housing materials
EN-GP240GH cast steel
Sealing
Metall/Wills®
Media
Steam 300°C, Thermal-Oil >300°C
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