Brochure

Parker Hannifin Corporation, Climate and Industrial Controls Group, Cleveland, OH
Page 4 / Catalog E-1, Thermostatic & Automatic Expansion Valves
TEV Model Number Selection Guide
Capacity
Parker’s expansion valves
offer a range of capacities
from 1/8 ton to 70 tons de-
pending on refrigerant. See
pages 15-18 for capacity
tables.
Bleed
Denoted by “B”.
Not available on all TEVs.
See bleed capacity.
Used for equalizing system
during off cycle (compressor
unloading). Consult Parker.
See Catalog E-1a, TEV and
AEV Theory & Application.
Bleed Capacity
Percentage based on nominal
capacity of valve specified by
manufacturer or Parker.
Rainbow Charge™
Refrigerant Designation
Refrigerant
Color Code
R-12 - yellow
R-22 - green
R-134a - light blue
R-404A - orange
R-407C - light brown
R-410A - rose
R-502 - purple
HP80 - canary
HP81 - olive
Z
R-410A
J
R-134a, R-401A (MP39),
R-401B (MP66)
V
R-407C (AC9000), R-22
S
R-125, R-404A (HP62),
R-402A (HP80), R-402B
(HP81), R-507 (AZ50)
Charge Operating Temperature Range
VX100, JX60, SX110, ZX200
Air Conditioning
VX35, SX35
Low Temp. Ref.
VZ, SZ
Low Temp. Ref.
VW, JW, SW
All purpose liquid
-40 -30 -20 -10 0 10 20 30 40 50 60
Evaporator Temperature °F
Nomenclature (Example) – N, C(E), SC(E), EC(E) Valves
Bleed
Capacity
Bleed
(Optional)
Maximum
Operating
Pressure
(MOP)
100
Valve
Charge
X
RefrigerantNominal
Capacity
in Tons
5
External
Equalizer
(Optional)
E
Valve
Model
SC V B 20
(E) for Externally Equalized
Evaporator pressure drop > 3 psi
BLANK for Internally Equalized
Evaporator pressure drop < 3 psi
or smaller tonnage evaporators
See Catalog E-1a, TEV and AEV
Theory & Application.

Charge Type
"W” (all-purpose) liquid charge maintains nearly flat superheat control over a -40°F to +60°F (-40°C to +15°C) evaporator temperature range.
“Z” (low temperature) charge provides fast pulldown benefits like a gas charge with the non-migrating benefits of a liquid charge; usable over a -40°F to 0°F
(-40°C to -20°C) evaporator temperature range.
“X” (damped response) gas charge provides a pressure limiting (MOP) charge with anti-hunt characteristics over a -40°F to +60°F (-40°C to +15°C) evaporator
temperature range.
Notes: M.O.P. not available on “W” or “Z” charge.
1. Maximum operational pressure 500 psig (35 bar) high side and 275 psig (19 bar) low side.
2. Maximum storage temperature 130°F (55°C).
3. Consult Parker for pressure and temperature exceptions.
4. Do not use “W” or “Z” liquid charges in applications where bulb temperatures can exceed 130°F (55°C).
For these applications use type “X” MOP gas charge only.