Product data sheet
Valve
2-640-05-0800-8008-DT,
November 25, 2024
Seat Valve pneum. direct
Series 2/640 +400°C VA
Valve 2/640-05/0800/8008-DT

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.

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Valve 2/640-05/0800/8008-DT
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Datasheet explicit
Version2/640-
Type of valveSeat Valve pneum. direct
Connection type, valve seat05DN40 40mm
Kv-value (Δp = 1 bar H₂O)22 m³/h
Housing08AISI 316 Ti - 1.4571(81)
Sealing00Metall/Wills®
Function8OPEN with spring
Design0straight seat, actuator aluminium
Actuator size08⌀80
Actuator volume260 cm³
Valve optionDTdistance unit with Wills® seals
System pressure0 - 10 bar (the max. operating pressure requires a control pressure of min. 6 bar)
Control pressure6 - 8 bar
Temperature Mediumfrom -40 °C to 400 °C
Temperature Environmentfrom -10 °C to 60 °C
Mounting positionin any position
Specific use caseClosed system (includes open system)
scope of delivery1 valve
Not applicable
Valve optionDTdistance unit with Wills® seals
DescriptionHigh temperature version up to +400°C with metallic seat seal, static with Wills® seals. | leakage rate 3
REACH-RoHS conformityREACH Yes | RoHS Yes
Customs exportCountry of origin Germany; ECCN (US): N; AL: N