MVS661.25-6.3N

Hermetically sealed 2-port valves for modulating control of refrigerant circuits including chillers and heat pumps.

• Expansion gas, flash gas and suction throttle applications with one type of valve
• PN 63, stainless steel with welding connections
• Integrated power electronic with precise position feedback signal
• For ammonia R717 and all standard refrigerants, noncorrosive gases/liquids and CO2 (R744). It is not suited for use with inflammable refrigerants.

Additional info
“An exchangeable ASR..N valve insert allows for different kvs-values with the same type of DN25 valve. In the event of service, this insert can also be replaced on the plant.
MVS661..N are UL listed.”

• PN class: PN 63
• Operating voltage: AC 24 V, DC 20…30 V
• Power consumption: 22 VA
• Operating range: 0…20 mA, DC 2…10 V, 4…20 mA
• Positioning signal: DC 0...10 V, DC 2...10 V, DC 0...20 mA, DC 4...20 mA
• Positioning time: 1 s
• Spring return function: Closed
• Position feedback: DC 0…10 V, 0…20 mA, DC 2…10 V, 4…20 mA
• Degree of protection: IP65
• Ambient temperature, operation: -25…55 °C
• Mounting position: Upright to horizontal
• Permissible operating pressure: 6300 kPa; 914 psi
• Leakage rate: 0.002 % of kvs
• Medium temperature: -40…120 °C; -40…248 ºF
• Valve characteristic: Linear
• Stroke resolution ΔH/H100: 1:1000
• Material, valve body: Steel / CrNi steel
• Material, inside set: CrNi steel
• Δpmax: 2500 kPa
• Dimensions (W x H x D): 160 x 285 x 102 mm
• kvs: 6.3 m³/h
• kvs reduced: 4 m³/h
• DN: 25
• Warranty: 60 Months

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