24, Jalan 6/91,
Taman Shamelin Perkasa,
56100 Cheras,
Kuala Lumpur, Malaysia.
Sanhua Thermostatic Expansion Valve (RFGD)
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Sanhua Thermostatic Expansion Valve (RFGD) |
RFGD series thermostatic expansion valves are used to adjust the mass flow of refrigerant into the
evaporator while controlling the refrigerant superheat at the outlet of the evaporator. They can be used
for various refrigerants under all working conditions. Typical applications are refrigerations systems
like commercial refrigerators and freezers, icemakers, dehumidifiers as well as air conditioners at
various evaporation temperatures.
Features
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Compact design with built-in orifice Warm thermo head construction All connections pipes are completely in copper Valves with MOP function can be provided to assure reliable compressor operation Applicable to a wide evaporation temperature range Reliable and consistent performance of superheat control Balanced Port - suitable for reversible cycles Thermal bulb utilizes cross charge technology, providing consistent superheat degree over the whole evaporation temperature range
General Specification
Applicable for all common HCFC and HFC refrigerants such as : R22, R134a, R404A, R407C,R410A, R507
Ambient temperature min./max. : -35oC/+55oC Medium temperature TS min./max. : -40oC/+70oC -60oC/+70oC Maximum operating pressure PS: 2,1 ... 4,5 Mpa (21...45 bar) Maximum operating pressure is related to the used refrigerant Installation position: - Preferably valve head upwards Main flow direction from inlet A to outlet B Certifications: UL/CSA and PED declarationTechnical parameters
RFGD valves are available in a straight shape with adjustable superheat on site
RFGD valves are available with the following solder connections
Metric: Inlet 10mm ODF/ Outlet 16mm ODF or
Inlet 12mm ODF/ Outlet 22mm ODF or
Inlet 16mm ODF/ Outlet 22mm ODF
Imperial: Inlet 3/8” ODF/ Outlet 5/8” ODF or
Inlet 1/2” ODF/ Outlet 7/8” ODF or
Inlet 5/8” ODF/ Outlet 7/8” ODF
RFGD valves are available with 3 different temperature ranges:
from -40°C to +10°C
from -40°C to -5°C
from -60°C to -25°C
Equalization port available as an option:
Metric: 6mm ODF (available for models with metric solder connections)
Imperial: 1/4” ODF (available for models with imperial solder connections)
Capillary tube length 1500mm as standard. Different length customizable on request.
Standard MOP values:
T. range -40°C to +10°C: MOP: +15°C or MOP not present
T. range -40°C to -5°C: MOP: 0°C
T. range -60°C to -25°C: MOP: -20°C
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Thermostatic Expansion Valve Catalogue
Thermostatic Expansion Valve Instruction