Location:Index--->Product Center >> Danfoss Thermostatic Expansion Valves >> 068Z3400 Danfoss Thermostatic expansion valve, T 2, R404A/R507A
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Product Description
068Z3400 Danfoss Thermostatic expansion valve, T 2, R404A/R507A
Expansion valve is an important component in the refrigeration system, usually installed between the liquid storage cylinder and the evaporator.
The expansion valve throttles the medium temperature and high pressure liquid refrigerant into low temperature and low pressure wet vapor, and then the refrigerant absorbs heat in the evaporator to achieve refrigeration effect.
The expansion valve controls the valve flow rate through the change in superheat at the end of the evaporator, preventing insufficient utilization of evaporator area and cylinder knocking.
1. Select Valve Body
Equalization
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R22/R407C
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R404A/R507A
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R134a
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Internal
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068Z3206
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068Z3400
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068Z3346
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External
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068Z3209
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068Z3403
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068Z3348
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2. Select Orifice
A: T2/TE2 valve capacities are based on the installed orifice. To select the correct size, use one of the two methods below: System characteristics: Select the orifice using appropriate refrigerant, evaporator temperature, and system capacity.
OR
B: Nominal capacity of the installed valve: Use the nominal capacity of the originally installed valve and match with the nominal capacity in chart (3rd column from left).
It mainly plays a role in throttling, reducing pressure, and regulating flow, consisting of three main parts: valve body, temperature sensor, and balance pipe
Thermosensitive bulb
The temperature sensing bag is filled with refrigerant in a gas-liquid equilibrium saturated state, which is not connected to the refrigerant in the system.
OR
B: Nominal capacity of the installed valve: Use the nominal capacity of the originally installed valve and match with the nominal capacity in chart (3rd column from left).
It mainly plays a role in throttling, reducing pressure, and regulating flow, consisting of three main parts: valve body, temperature sensor, and balance pipe
Thermosensitive bulb
The temperature sensing bag is filled with refrigerant in a gas-liquid equilibrium saturated state, which is not connected to the refrigerant in the system.
It is usually tied to the outlet pipe of the evaporator and in close contact with the pipe to sense the temperature of the superheated steam at the outlet of the evaporator. Since the refrigerant inside it is saturated, the pressure in the saturated state is transmitted to the valve body based on the temperature.
Folding balance tube
One end of the balance tube is connected to the evaporator outlet slightly away from the temperature sensing bulb and directly connected to the valve body through a capillary tube. The function is to transmit the actual pressure at the evaporator outlet to the valve body. There are two diaphragms inside the valve body, which move upward under pressure to reduce the refrigerant flow through the expansion valve and seek balance in dynamic state.
Folding balance tube
One end of the balance tube is connected to the evaporator outlet slightly away from the temperature sensing bulb and directly connected to the valve body through a capillary tube. The function is to transmit the actual pressure at the evaporator outlet to the valve body. There are two diaphragms inside the valve body, which move upward under pressure to reduce the refrigerant flow through the expansion valve and seek balance in dynamic state.
Product details
Gross weight | 0.306 Kilogram |
Net weight | 0.284 Kilogram |
Volume | 0.508 Liter |
EAN | 5702422125280 |
Approval | EAC LLC CDC TYSK |
Body material | Brass |
Capillary tube length [in] | 59 in |
Capillary tube length [mm] | 1500 mm |
China RoHS compliance | Out of scope |
Connection material | Brass |
Direction | Angleway |
Flow direction | Single-flow |
Flow direction indicator | Embossed 1-way arrow |
Fluid Group | 2 |
Identical product | 068Z3508 |
In scope of WEEE and contain batteries | No |
Inlet connection type | Flare |
Inlet size [in] | 3/8 in |
Max. Working Pressure [bar] | 34 bar |
Max. Working Pressure [psig] | 500 psig |
Outlet connection type | Flare |
Outlet size [in] | 1/2 in |
Packing format | Multi pack |
Parts included | Bulb strap |
Parts Program name | T2/TE2 |
PED category | Art. 4, par. 3 |
Pressure equalization | Internally equalized |
Product accessories | TXV accessories |
Product group | Expansion valves |
Product Name Description | Thermostatic expansion valve |
Quantity per packing format | 20 pc |
Rated cap. cond. Range N [IMP] | OS=10.8 ºF tcond=100 ºF tevap=40 ºF tliq=98 ºF |
Rated cap. cond. Range N [SI] | OS=6K tcond=38 ºC tevap=4.4 ºC tliq=37 ºC |
REACH Candidate List substances | Lead (CAS no. 7439-92-1) |
Refrigerants | R404A/R507A |
SCIP dossier no. | c164ed45-f10d-4d73-9eae-355ccb479f4b |
SCIP dossier product name | T2 /TE2 - Thermostatic Expansion Valve |
Serviceable | TXV spare parts |
Static Superheat (SS) [°C] | 4 °C |
Static Superheat (SS) [°F] | 7.2 °F |
Superheat setting | Adjustable |
Temperature range [°C] [max] | 10 °C |
Temperature range [°C] [min] | -40 °C |
Temperature range [°F] [max] | 50 °F |
Temperature range [°F] [min] | -40 °F |
Type | T 2 |
UA address | UA_2L.png |
UK RoHS compliance | Out of scope |
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