Submittal Sheet

© Danfoss A/S (AC-MCI/sw) 2013-11 DKRCC.PD.AXV.A9.02 / 520H8187 3
Data sheet Thermostatic expansion valves, type TGE
Design and function
Danfoss 67N01.12
1. Bulb with capillary tube
2. Thrust pad
3. Thermostatic element
4. Push pin seal
5. Double balance port
6. Static superheat adjustment
spindle
7. Valve body
8. Protective cap
Fig. 2
Balanced port design
TGE 10
Fig. 3
Double balanced port design
TGE 20 and TGE 40
The central push pin is tted with a robust seal (4)
that ensures maximum tightness for the life of the
valve.
Static superheat (SS) can be adjusted by the
setting spindle (6), see g. 5. The standard
superheat setting (SS) is 4K / 7.2 °F and adjustable
for 0 - 8K / 0 → 14.4 °F.
SS = static superheat
OS = opening superheat
SH = SS + OS= total superheat
Example:
Static superheat SS = 4K / 7.2 °F (factory setting)
Opening superheat OS = 4K/ 7.2 °F
The opening superheat is 4K, i.e. from the point
the valve begins to open up to nominal capacity.
Opening superheat is determined by the design
and cannot be changed.
Total superheat SH = SS+OS
SH = 4+4 = 8K/ 14.4 °F
Total superheat SH can be altered by changing SS
(by using the setting spindle).
Balanced port design and advantage
The TGE series of thermostatic expansion valves
have balanced port design.
Balanced port design prevents changes in
pressure drop across the valve from inuencing
Fig. 4
operation and provides excellent control on
applications having widely varying operating
conditions.
Balanced port TXV’s are recommended in
refrigeration and air conditioning systems with
any combinations of these conditions:
1) Widely varying head pressures
2) Widely varying evaporator loads
3) Widely varying pressure drop across the TXV
4) Fluctuating or extremely low liquid
temperatures
5) Intermittent liquid line ash gas
Nominal capacity*)
*Nominal capacity according to
ARI standard
Valve type
Orice
no.
Range N, K, MAH
R134a R407C R404A/R507 R22 R290 R410A R32
kW TR kW TR kW TR kW TR kW TR kW TR kW TR
TGE 10
3 6.12 1.74 9.63 2.74 7.01 1.99 10.40 2.96 10.40 2.94 12.30 3.48 18.10 5.13
4 8.36 2.38 13.00 3.71 9.51 2.70 14.10 4.01 14.10 4.00 16.60 4.72 24.50 6.95
6 12.50 3.54 19.10 5.44 14.00 3.97 20.70 5.87 20.80 5.90 24.30 6.90 35.70 10.20
8 16.90 4.79 25.50 7.25 18.60 5.29 27.40 7.78 27.70 7.86 32.10 9.13 47.30 13.40
9 19.90 5.64 30.60 8.70 21.60 6.14 32.60 9.25 32.60 9.28 37.30 10.60 55.00 15.60
11 24.50 6.96 37.10 10.50 26.60 7.56 38.80 11.00 39.20 11.10 45.90 13.00 68.00 19.20
TGE 20
12.5 29.70 8.44 42.90 12.20 31.60 9.00 43.50 12.40 43.90 12.50 55.00 15.70 81.00 23.10
16 37.60 10.70 54.00 15.30 39.90 11.40 55.00 15.60 56.00 15.80 69.00 19.70 102.00 29.10
20 44.60 12.70 64.00 18.10 46.80 13.30 65.00 18.40 66.00 18.60 81.00 23.10 120.00 34.00
21 52.00 14.70 77.00 22.00 53.00 15.10 75.00 21.30 75.00 21.30 91.00 26.00 135.00 38.30
TGE 40
26 62.00 17.60 86.00 24.50 64.00 18.20 94.00 26.80 96.00 27.20 112.00 32.00 165.00 47.10
30 71.00 20.10 98.00 27.80 72.00 20.60 107.00 30.40 109.00 30.90 127.00 36.20 187.00 53.00
40 87.00 24.80 125.00 35.50 94.00 26.60 136.00 38.80 137.00 39.00 160.00 45.60 236.00 67.00
42 101.00 28.70 150.00 42.50 106.00 30.30 155.00 44.00 154.00 43.70 185.00 53.00 273.00 78.00
Units / Conditions t
evap
t
cond
Subcooling
SI [°C] 4.4 38 1
US [°F] 40 100 1.8