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VHV and STF: 4-way reversing valves
Pilot operated 4-way reversing valves allow an inversion of the refrigeration cycle, changing from cooling
mode in summer to heating mode in winter. 4 way valves are also used in defrost cycles in order to allow
hot gas to be sent into iced up evaporators. The cycle inversion is initiated by a small solenoid pilot valve,
which controls the movement of a slider, and in turn governs the refrigerant flow path. The valve is connected
to the discharge and suction of the compressor.
Features
discharge connection
slider
valve body
connection to condenser/evaporator
connection to evaporator/
condenser
suction connection
Applications Advantages Facts
· Heat pump applications
· Reversing chillers
· Packaged air conditioning systems
· Room air conditioning systems
· Each model can be used with R410A
refrigerant as well as R407C, R134a,
R404A, R22
· Different tube diameters and configurations
available
· Designed for instantaneous changeover
with minimum pressure differential
· Minimized leakage in the valve
· Reduced pressure drop due to unique
design (shape of internal elements)
· Wide application range for all commonly
used refrigerants: (R134A,
R404A, R407C, R22 and R410A)
· Max. working pressure: 45 bar
· Ambient temperature: -20 to 55ºC
· Full capacity range up to 400 kW
· Largest valve available on the market
(VHV-6001)
· 30 years of experience and know-how
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