Series TMX
THERMOSTATIC EXPANSION VALVES
INTERCHANGEABLE ORIFICE CARTRIDGE, BALANCED PORT
PRODUCT DATA
Features
• TMXL: TMX and solder base, two-way construction or
angle construction
• TMXB: TMX and flare base, two way construction
• Damped gas charge with pressure limiting MOP
• Liquid charge
• Adjustable superheat setting
• Solder connections or flare connections
• External pressure equalisation is integrated in the
valve body
• Extreme durable due to stainless steel head and
stainless steel diaphragm welded using protective gas
• Balanced port construction
TMXB
TMXL
• Interchangeable orifice cartridges
• Refrigerants: R22, R23, R124, R134a, R227, R236fa,
R401A, R404A, R407C, R410A, R422D,
R507A, R508B, ISC89
Further refrigerants and MOP on
request.
Specification
Application
Thermostatic expansion valves series TMX are used in
general refrigeration and for original equipment.
Plants with one or more refrigerant circuits such as
refrigerated cabinets, deep freezing plants, milk cooling units,
water chillers, air conditioning systems, cold stores and heat
pumps. For plants with single and multiple injections, with
high or low flow resistance, for all kind of distributors.
Materials
Body
Thermal head
Base
brass
stainless steel
brass
Nominal capacity range
Evaporating temperature
range
Maximum pressure PS
Maximum test pressure PF
Max. ambient temperature
Max. bulb temperature
Static superheat
Length of capillary tube
Bulb diameter
17.0 to 75.1 kW R22
see table on page 2
see table on page 2
see table on page 2
100 °C
gas charge: 140 °C
liquid charge: 70 °C
approx. 3.5 K
2 m
16 mm
Copyright © 2009 Honeywell GmbH • Subject to change without notice EN0H-1904GE23 R0709
SERIES TMX
Thermal Charges and Temperature Ranges
1. Gas charge with pressure limiting MOP
Refrigerant
Commercial refrigerants
R22 +15 °C to -45 °C MOP +15 °C 36 39.6
+10 °C to -45 °C MOP +10 °C 36 39.6
±0 °C to -45 °C MOP ±0 °C 29 31.9
-10 °C to -45 °C MOP -10 °C 29 31.9
-18 °C to -45 °C MOP -18 °C 29 31.9
R134a +25 °C to -40 °C MOP +25 °C 34 37.4
+20 °C to -40 °C MOP +20 °C 34 37.4
+15 °C to -40 °C MOP +15 °C 34 37.4
+10 °C to -40 °C MOP +10 °C 34 37.4
±0 °C to -40 °C MOP ±0 °C 29 31.9
R401A +10 °C to -40 °C MOP +10 °C 34 37.4
R404A +10 °C to -50 °C MOP +10 °C 36 39.6
±0 °C to -50 °C MOP ±0 °C 36 39.6
-10 °C to -50 °C MOP -10 °C 34 37.4
-18 °C to -50 °C MOP -18 °C 34 37.4
-30 °C to -50 °C MOP -30 °C 29 31.9
R407C +15 °C to -30 °C MOP +15 °C 36 39.6
+10 °C to -30 °C MOP +10 °C 36 39.6
±0 °C to -30 °C MOP ±0 °C 29 31.9
R410A +15 °C to -50 °C MOP +15 °C 40 44.0
-10 °C to -50 °C MOP -10 °C 29 31.9
-15 °C to -50 °C MOP -15 °C 29 31.9
-20 °C to -50 °C MOP -20 °C 29 31.9
R422D +15 °C to -45 °C MOP +15 °C 36 39.6
-18 °C to -45 °C MOP -18 °C 29 31.9
R507A +10 °C to -50 °C MOP +10 °C 36 39.6
±0 °C to -50 °C MOP ±0 °C 36 39.6
-18 °C to -50 °C MOP -18 °C 34 37.4
Further refrigerants and MOP on request.
Evaporation
temperature
range
MOP PS
(bar(a))
PF
(bar(a))
Refrigerant
Deep freeze refrigerants
R23 -40 °C to -80 °C MOP -40 °C 29 31.9
-55 °C to -80 °C MOP -55 °C 29 31.9
R410A -40 °C to -70 °C MOP -40 °C 29 31.9
R508B -55 °C to -100 °C MOP -55 °C 29 31.9
Isceon 89 -40 °C to -70 °C MOP -40 °C 29 31.9
Further refrigerants and MOP on request.
MOP valves protect the compressor by limiting the increase
of suction pressure.
The MOP value should be chosen for the max. permissible
suction pressure of the compressor or min. 5 K higher than
the required evaporating temperature of the system.
For orders without any MOP indication a valve with MOP
+ 10 °C will be delivered.
With gas charged valves and MOP it is under all operating
conditions necessary that the bulb is always colder than the
capillary tube and the thermal head!
With the Honeywell TMX series the thermal head is heated
advantageously by the liquid refrigerant. The warm thermal
head is on the safe side at any time.
2. Liquid charge
Refrigerant
R22 +30 °C to -45 °C
R124 +50 °C to -10 °C
R134a +20 °C to -40 °C
R227 +40 °C to -10 °C
R236fa +30 °C to -10 °C
R404A +10 °C to -50 °C
R407C +30 °C to -30 °C
Further refrigerants on request.
Evaporation
temperature
range
MOP PS
(bar(a))
Evaporation
temperature range
PF
(bar(a))
Capacities
Nominal capacitiy (kW)*
Type Orifice size
4.5 17.0 11.8 12.0 16.4 20.3 11.3 12.1 9.4 6.6 6.0
TMXL 4.75 22.4 15.9 15.8 21.6 26.8 15.3 15.9 12.4 8.7 8.0
5 29.1 20.0 20.5 28.0 34.8 19.8 20.7 16.1 11.3 10.3
and 6 42.4 27.6 29.8 40.8 50.8 28.9 30.1 23.5 16.4 15.1
7 54.5 35.3 38.3 52.5 65.3 37.1 38.7 30.2 21.1 19.4
TMXB 8 64.1 43.3 45.1 61.8 76.9 43.7 45.6 35.6 24.9 22.8
10 75.1 51.0 52.8 72.3 90.0 51.2 53.3 41.7 29.1 26.7
* Capacities are based on t0 = +4 °C, tc = +38 °C and 1 K subcooled liquid refrigerant entering the valve.
For refrigerant R124, R227 and 236fa: Capacities are based on t
refrigerant entering the valve.
For other operating conditions see capacity charts in Honeywell catalogue or consult the Honeywell software.
EN0H-1904GE23 R0709 2 Honeywell GmbH • Subject to change without notice
R22 R134a R404A R407C R410A R422D R507A R124 R227 R236fa
0 = +10 °C, tc = +50 °C and 1 K subcooled liquid
Dimensions and Weights
SERIES TMX
Connections Type
Inlet
(A) + (B)
TMX - - 7/16" UNF approx. 0.60
XD - - - approx. 0.14
XLS
two-way construction
XLS
angle construction
XBS
two-way construction
12 + 16 mm ODF 16 + 22 mm ODF -
1/2" + 5/8" ODF 5/8" + 7/8" ODF -
12 + 16 mm ODF 16 + 22 mm ODF -
1/2" + 5/8" ODF 5/8" + 7/8" ODF -
7/8" UNF 7/8" UNF - approx. 0.49
TMX
Outlet
(C) + (D)
Pressure
equaliser
Weight
(kg)
approx. 0.41
approx. 0.32
XD
XLS - angle
Honeywell GmbH • Subject to change without notice 3 EN0H-1904GE23 R0709
XBS - two-way
XLS - two-way
SERIES TMX
Type Code / Order Information (Part Programme)
1. Valve body
TMX R134a MOP +10 °C
Series
Refrigerant
Pressure limiting MOP
() = without MOP
2. Solder / Flare base
Series
XLS
XLS = solder connection
XBS = flare connection
Connection size
D = two-way construction
W = angle construction
3. Orifice cartridge
16 mm x
22 mm
W
Series
Orifice size
XD 10
Installation
• The valves may be installed in any position.
• The external pressure equaliser line should be 6 mm or
1/4” in diameter and is to be connected downstream of the
remote bulb. An overbow is recommended in order to
prevent the ingress of oil into the equaliser line.
• The bulb should preferably be positioned on the upper half
of a horizontal suction line but never after a liquid trap. As
a general rule, bulbs of expansion valves should be
insulated to prevent them being affected by the ambient
temperature.
• Do not bend or squeeze the bulb when tightening the bulb
clamp
• Never quench the base with water after soldering,
this may cause cracks and distort the sealing surfaces.
• The screws fixing the valve body to the solder base must
be tightened in diagonal sequence (torque 20 Nm).
• Constructive modifications at the valve are not allowed.
Superheat Adjustment
In general the Honeywell valves should be installed with the
factory setting for the used refrigerant unaltered.
This superheat adjustment is calibrated for lowest
superheating and optimum evaporator utilisation. However,
should it be necessary to adjust the superheat, turn the
adjusting spindle as follows:
Turning clockwise
Turning
counterclockwise
One turn of adjusting spindle alters superheat setting by
approx. 0.3 bar. Increase of superheat setting results in a
lower MOP-value and vice versa.
reduced refrigerant mass flow,
=
increase of superheat
increased refrigerant mass
=
flow, decrease of superheat
Automation and Control Solutions
Honeywell GmbH
Hardhofweg
74821 Mosbach/Germany
Phone: +49 (0)
Fax: +49 (0)
62 61 / 81-475
62 61 / 81-461
Manufactured for and on behalf of the
Environment and Combustion Controls
Division of Honeywell Technologies Sàrl,
1180 Rolle, Z. A. La Pièce 16, Switzerland
by its authorized representative Honeywell GmbH
E-Mail: cooling.mosbach@honeywell.com
KAT-TMX-002
www.honeywell-cooling.com
EN0H-1904GE23 R0709 4 Honeywell GmbH • Subject to change without notice
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