Brochure

Catalog CIC-2003-1/US
Parker Hannifin Corporation
Climate & Industrial Controls Group
Cleveland, OH
161
Service
& Check
Valves
Thermostatic and Constant Pressure (Automatic) Expansion Valves
TXVs & AXVs
The Parker Rainbow Charge™
Multiple Use Thermostatic Charges for Alternative Refrigerants
Parker Rainbow Charges™ are designed to provide precise control for a complex variety of old and new
refrigerant applications. Rainbow Charge labeling visually indicates which refrigerants each valve is designed
for to simplify selection and reduce inventory. Rainbow Charge colors are consistent with industry standard
refrigerant identification, insuring that the right Rainbow Charges are chosen for the application See pages 134
and 160 for more information on bulb charges.
General Information The Parker Rainbow Charge™
Charge May also be used with
JW, JX60 (R-134a) R-12, R-401A (MP39), R-401B (MP66)
VW, VX35, VX100, VZ (R22) R-407C (AC9000)
SW, SX35, SX110, SZ (R404A) R-125, R-502, R-402A (HP80), R-402B (HP81), R-507 (AZ50)
Use the following steps to determine the correct capacity valve for use with
one of the alternative refrigerants listed above:
1. Choose an expansion valve, using the capacity tables, which meets the
requirements of the application. For example, if applying an R-22 valve to
an R-407C system, choose an appropriate R-22 valve using the conditions
of the R-407C system (choose appropriate evaporator temperature and valve
pressure drop from R-22 capacity table).
2. Multiply the capacity found in the table by the appropriate factor below to
determine actual valve capacity with the new alternative.
From To Multiply by Special Considerations
R-134a R-12 0.80 Decrease superheat by approximately 5°
R-134a R-401A (MP-39) 1.05 Adjust superheat only if necessary
R-134a R-401B (MP-66) 1.05 Adjust superheat only if necessary
R-22 R-407C (AC9000) 1.01 Increase superheat by approximately 5°
R-404A R-125 0.77 Decrease superheat by approximately 5° for -10° F evap or lower
R-404A R-502 1.02 Adjust superheat only if necessary
R-404A R-402A (HP-80) 1.00 Decrease superheat by approximately 5° for 20° F evap or lower
R-404A R-402B (HP-80) 1.10 Adjust superheat only if necessary
R-404A R-507 (AZ50) 0.98 Decrease superheat by approximately 5°
3. Correct the capacity determined in the previous step for liquid line temperature.
Refrigerant 0° 10° 20° 30° 40° 50° 60° 70° 80° 90° 100° 110° 120° 130° 140°
R-134a 1.66 1.60 1.54 1.47 1.40 1.33 1.27 1.21 1.11 1.07 1.00 0.93 0.87 0.81 0.71
R-401A (MP-39) 1.57 1.51 1.43 1.37 1.35 1.28 1.23 1.17 1.11 1.06 1.00 0.94 0.88 0.82 0.75
R-401B (MP-66) 1.58 1.52 1.47 1.41 1.37 1.30 1.24 1.18 1.12 1.06 1.00 0.94 0.88 0.81 0.75
R-407C (AC9000) 1.60 1.56 1.49 1.43 1.37 1.32 1.25 1.18 1.12 1.07 1.00 0.94 0.85 0.78 0.71
R-125 2.14 2.00 1.91 1.79 1.71 1.58 1.47 1.38 1.26 1.12 1.00 0.88 0.73 0.57 0.40
R-404A (HP62) 1.91 1.83 1.74 1.64 1.56 1.48 1.39 1.30 1.19 1.10 1.00 0.89 0.78 0.67 0.56
R-402A (HP-80) 1.92 1.84 1.75 1.65 1.59 1.49 1.39 1.29 1.19 1.10 1.00 0.90 0.79 0.69 0.58
R-402B (HP-81) 1.76 1.69 1.61 1.54 1.47 1.39 1.31 1.24 1.16 1.08 1.00 0.91 0.83 0.73 0.64
R-507 (AZ50) 1.96 1.86 1.77 1.68 1.58 1.48 1.39 1.29 1.19 1.10 1.00 0.90 0.80 0.67 0.54
Degrees F