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The DSF series 4-way reversing valve is applicable to all kinds of heat pump systems. It changes the flow path of refrigerants by controlling the pilot valve to switch the mode between cooling and heating

• Reliably instantaneous changeover under minimum pressure differential
• Wide range of capacity and connection styles
• Application spectrum has extended into systems under more extreme conditions
• Available with special design configuration for systems of heating mode as main function
• Built-in chip energy-saving coil on request

Declaration according to PED, LVD, IECEx and UL

Applicable Refrigerants: R134a, R407C, R404A, R410A, R290 and R32
Relative Humidity: ≤95% RH
Medium Temperature: -30°C~+135°C
Ambient Temperature: -30°C~+55°C
Max. Operating Pressure: 4.5 MPa

DSF series 4-way reversing valve for HT & HP application is a special variant, which meets requirements of new refrigerants, and is suitable for application of all kinds of heat pump systems under more extreme conditions. It changes the flow path of refrigerants reliably by controlling the pilot valve to switch the mode between cooling and heating

• Reliably instantaneous changeover under minimum pressure differential

• Wide range of capacity and connection styles

• Application spectrum has extended into systems under more extreme conditions
• Available with special design configuration for systems of heating mode as main function
• Built-in chip energy-saving coil on request

Declaration / Certification according to PED, CE

Applicable Refrigerants:
R32 / R404A / R407C / R410A / R290 / R134a / R454B /R513A / R513B /
R1234yf / R1234ze / R454C / R455A / R454A / R452B / R448 / R22
Relative Humidity: ≤95% RH
Medium Temperature: -30°C~+150°C
Ambient Temperature: -30°C~+55°C
Max. Operating Pressure: 4.9 MPa

DRVB series change the flow path of refrigerants by controlling the action of a small DSF valve to switch the mode between cooling and heating

• X-cross design ensures big flow area and low pressure drop
• Stability and reliability ensured by adopting a small 4-way valve as pilot valve
• Built-in self-lubricating bush
• Special material of seal ring ensures the valve’s applicability to all commonrefrigerants

Declaration / Certification according to PED, CE, UL

Applicable Refrigerants:
R32 / R404A / R407C / R410A / R290 / R134a / R454B /R513A / R513B /
R1234yf / R1234ze / R454C / R455A / R454A / R452B / R448 / R22
Max. Operating Pressure: 4.9 MPa
Max. Operating Pressure Differential: 3.1 MPa
Min. Operating Pressure Differential: 0.3~0.4 MPa
Medium Temperature: -30°C~ +130°C
Ambient Temperature: -20°C ~ +55°C
Relative Humidity: ≤95% RH
Allowable Voltage Fluctuation: 85%~110%
Standard Coil: AC 110, AC 220V