Thermostatic Expansion Valve
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1 STANDARD Thermostatic Expansion Valve RFKH series thermostatic expansion valves are used to adjust mass flow of refrigerant into the evaporator while controlling the refrigerant s superheat at the outlet of the evaporator. They can be used for various refrigerants under all working conditions. Typical applications are refrigeration systems like freezers, ice makers, dehumidifiers as well as air conditioners and heat pumps at various evaporation temperature ranges. FEATURES STAINLESS STEEL CAPILLARY AND SENSING BULB EXCHANGEABLE VALVE ORIFICE, EASY TO STOCK HOLDING, CONVENIENT FOR CAPACITY MATCH AND REPAIR THERMAL BULB UTILIZES CROSS CHARGE TECHNOLOGY, PROVIDING CONSISTENT SUPERHEAT DEGREE OVER THE WHOLE EVAPORATION TEMPERATURE RANGE VALVES WITH MOP FUNCTION CAN BE PROVIDED TO ASSURE RELIABLE COMPRESSOR OPERATION APPLICABLE IN A WIDE EVAPORATION TEMPERATURE RANGE RELIABLE AND CONSISTENT PERFORMANCE OF SUPERHEAT CONTROL GENERAL SPECIFICATIONS Applicable for all common HCFC, HFC, HFO refrigerants such as: R22, R407C, R404A, R507, R134a, R404A, R410A, R407A, R407F, R448A, R449A, R452A Ambient temperature min.max.: -35 C +55 C Medium temperature TS min.max.: -40 C +70 C Max. operating pressure PS: 4.6 MPa (46 bar) Installation position: - Preferably valve head upwards - Flow direction from inlet A to outlet B Certifications: ULCSA and PED declaration RFKH series angle shape valve Inlet flare connection Capillary tube length 1,5m Equalization port: - RFKH flareflare type with ¼ flare connection; - RFKH flare type with ¼ or 6mm connection
2 MODEL DESIGNATION LEGEND Position Number 1 Product Code RFKH Refrigerant Designation Legend Product Series Thermostatic expansion valve Description 01 R22 02 R407C 03 R404A R507A 04 R134a 2 05 R410A 07 R407A R407F 08 R448A R449A 10 R450A 11 R452A 14 R513A 3 4 Pressure Equalization E (Omitted) Miscellaneous xxxx Description External pressure equalization Internal pressure equalization Description Digits for additional information MODEL DESIGNATION EXAMPLE Position Number According to Designation Legend RFKH 01 E XXXX Thermostatic expansion valve RFKH 01 E XXXX Refrigerant R22 RFKH 01 E XXXX Connection for external pressure equalization RFKH 01 E XXXX Digits for additional information
3 MODELS WITH MOP FUNCTION RFKH valves can be selected with MOP (Max. Operating Pressure) function. MOP protects the compressor motor against excessive evaporating pressure during normal operation. R407AR407F Ambient temperature min.max.: -35 C +55 Range N Range NM Range NL Range B Refrigerant ( -40 C to +10 C) (-40 C to -5 C) (-40 C to -15 C) (-60 C to -25 C) MOP = +15 C MOP = 0 C MOP = -10 C MOP = -20 C R22 6,9 bar (abs.) - STD 4,1 bar (abs.) O.R. 2,4 bar (abs.) - STD N.A. R407C 6,6 bar (abs.) - STD N.A. N.A. N.A. R404A R507A 8,6 bar (abs.) - STD 5,2 bar (abs.) O.R. 3,4 bar (abs.) - STD 3,0 bar (abs.) - STD R134a 3,8 bar (abs.) - STD 2,1 bar (abs.) O.R. 1,0 bar (abs.) O.R. N.A. R410A 11,4 bar (abs.) - STD 8,0 bar (abs.) O.R. 4,8 bar (abs.) - STD N.A. R407A R407F 6,9 bar (abs.) - STD N.A. N.A. N.A. R448A R449A 7,5 bar (abs.) - O.R. 4,3 bar (abs.) O.R. 2,7 bar (abs.) - O.R. 2,47 bar (abs.) - O.R. R450A 3,5 bar (abs.) - O.R. 1,7 bar (abs.) O.R. 0,8 bar (abs.) - O.R. N.A. R452A 8,1 bar (abs.) - O.R. 4,8 bar (abs.) O.R. 3,1 bar (abs.) - O.R. 2,76 bar (abs.) - O.R. R513A 4,3 bar (abs.) - O.R. 2,3 bar (abs.) O.R. 0,9 bar (abs.) - O.R. N.A. STD : Standard product O.R. : On Request N.A. : Not Available Tab. A : s with Range N : Temperature Range from -40 C to +10 C [ without MOP ] R22 In Out Ext. RFKH flare flare RFKH01E flare flare flare RFKH flare RFKH01E flare RFKH flare RFKH01E flare
4 Tab. A : s with Range N : Temperature Range from -40 C to +10 C [ without MOP ] R407C R404A R507A R134a R410A R407A R407F In Out Ext. RFKH flare flare RFKH02E flare flare flare RFKH flare RFKH02E flare RFKH flare RFKH02E flare RFKH flare flare RFKH03E flare flare flare RFKH flare RFKH03E flare RFKH flare RFKH03E flare RFKH flare flare RFKH04E flare flare flare RFKH flare RFKH04E flare RFKH flare RFKH04E flare RFKH flare flare RFKH05E flare flare flare RFKH flare RFKH05E flare RFKH flare RFKH05E flare RFKH flare flare RFKH07E flare flare flare RFKH flare RFKH07E flare RFKH flare RFKH07E flare
5 Tab. A : s with Range N : Temperature Range from -40 C to +10 C [ without MOP ] R448A R449A R450A R452A R513A In Out Ext. RFKH flare flare RFKH08E flare flare flare RFKH flare RFKH08E flare RFKH flare RFKH08E flare RFKH flare flare RFKH11E flare flare flare RFKH flare RFKH11E flare RFKH flare RFKH11E flare RFKH flare flare RFKH11E flare flare flare RFKH flare RFKH11E flare RFKH flare RFKH11E flare RFKH flare flare RFKH14E flare flare flare RFKH flare RFKH14E flare RFKH flare RFKH14E flare
6 Tab. B : s with Range N : Temperature Range from -40 C to +10 C [ with MOP = +15 C ] R22 R407C R404A R507A R134a R410A In Out Ext. RFKH flare flare RFKH01E flare flare flare RFKH flare RFKH01E flare RFKH flare RFKH01E flare RFKH flare flare RFKH02E flare flare flare RFKH flare RFKH02E flare RFKH flare RFKH02E flare RFKH flare flare RFKH03E flare flare flare RFKH flare RFKH03E flare RFKH flare RFKH03E flare RFKH flare flare RFKH04E flare flare flare RFKH flare RFKH04E flare RFKH flare RFKH04E flare RFKH flare flare RFKH05E flare flare flare RFKH flare RFKH05E flare RFKH flare RFKH05E flare
7 Tab. B : s with Range N : Temperature Range from -40 C to +10 C [ with MOP = +15 C ] R407A R407F In Out Ext. RFKH flare flare RFKH07E flare flare flare RFKH flare RFKH07E flare RFKH flare RFKH07E flare Tab. C : s with Range NL : Temperature Range from -40 C to -15 C [ with MOP = -10 C ] R22 R404A R507A R410A In Out Ext. RFKH flare flare RFKH01E flare flare flare RFKH flare RFKH01E flare RFKH flare RFKH01E flare RFKH flare flare RFKH03E flare flare flare RFKH flare RFKH03E flare RFKH flare RFKH03E flare RFKH flare flare RFKH05E flare flare flare RFKH flare RFKH05E flare RFKH flare RFKH05E flare ) Extent of delivery: valve body and bulb strap 2) Different evaporation temperature range on request 3) MOP function on request 4) Number is referred to Multi Pack
8 Tab. D : s with Range B : Temperature Range from -60 C to -25 C [ without MOP ] R407A R407F In Out Ext. RFKH flare flare RFKH03E flare flare flare RFKH flare RFKH03E flare RFKH flare RFKH03E flare Tab. E : s with Range B : Temperature Range from -60 C to -25 C [ with MOP -20 C ] R404A R507A In Out Ext. RFKH flare flare RFKH03E flare flare flare RFKH flare RFKH03E flare RFKH flare RFKH03E flare 1) Extent of delivery: valve body and bulb strap 2) Different evaporation temperature range on request 3) MOP function on request 4) Number is referred to Multi Pack
9 DIMENSIONS ACCESSORIES ORIFICE Orifice Number Valve Orifice Valve Orifice Number R22 R407C Nominal Capacity 1) [ kw ] R404A R507A R134a R410A R410A 0X RFKH-023-0X ,7 0,69 1,3 1 0 RFKH ,9 2,1 1,4 1,2 2,5 1,8 1 RFKH ,8 4 2,8 2,1 5 3,7 2 RFKH ,1 5,4 4 2,7 6,2 5,1 3 RFKH ,6 9,2 6,8 4,4 11,2 8,6 4 RFKH ,2 13,9 10,8 6, ,4 5 RFKH ,1 18,5 14,1 8,6 21,3 17,6 6 RFKH ,3 22,1 16,8 10,3 26,8 21,2
10 ORIFICE Orifice Number Valve Orifice Valve Orifice Number R407A R407F Nominal Capacity 1) [ kw ] R448A R449A R452A R513A 0X RFKH-023-0X ,1 1,0 0,6 0,8 0,6 0 RFKH ,1 2,0 1,1 1,5 1,0 1 RFKH ,0 4,0 1,9 3,0 1,8 2 RFKH ,0 4,9 2,3 3,7 2,2 3 RFKH ,9 8,8 4,2 6,7 4,0 4 RFKH ,6 13,4 6,3 10,1 6,1 5 RFKH ,0 16,8 7,9 12,7 7,6 6 RFKH ,4 21,1 9,9 16,0 9,6 1) Nominal working conditions: - Condensing temperature 38 C; evaporating temperature +4,4 C; liquid temperature 37 C 2) R407C data based on dew point conditions 3) Nominal capacity based on - Static Superheat (SS) 5K (for models without MOP) and 4K (for models with MOP) - Opening Superheat(OS) 6K
11 SOLDER ADAPTERS FOR RFKH INLET A Number 1) SAE Flare Ø e RFK-A Solder Connection Ø d " RFK-A mm RFK-A " RFK-A mm 1) Copper pipe and flare nut are in the extent of delivery SOLDER ADAPTERS FOR RFKH EXTERNAL PRESSURE EQUALIZATION C Number 1) SAE Flare Ø e Solder Connection Ø d RFKA mm 14 RFKA " 1) Copper pipe and flare nut are in the extent of delivery
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