Out-of-Stock

Danfoss 068Z3728 1/4 - 5.5TR Expansion Valve Body, TE 2, R448A,R449A, 3/8x1/2 in, Flare, External Equalized, Bi-Flow, -40 to 50 F, Capacity determined by Orifice size Sold Separately, Identical Product 068Z3732

$72.85
Price per Each

Danfoss 068Z3728 Thermostatic Expansion Valve – TE2 for R448A and R449A

The Danfoss 068Z3728 thermostatic expansion valve (TXV) is designed for high precision refrigerant control in medium and low-temperature systems using R448A or R449A. This externally equalized angleway valve ensures stable superheat, even under significant evaporator pressure drops.

Key Features

Refrigerant: R448A, R449A
Capacity: 0.25 to 5.5 tons (based on orifice)
Temperature Range: -40 F to +50 F
Connections: 3/8 inch flare inlet × 1/2 inch flare outlet
Valve Type: Angleway, externally equalized
Capillary Tube Length: 59 inch
Max Working Pressure: 500 psig
Static Superheat: 7.2 F (adjustable)
Identical Part Number: 068Z3732

Applications

Ideal for supermarket display cases, walk-in coolers, transport refrigeration, ice machines, and other R448A/R449A systems requiring precise refrigerant metering.

Competitor Equivalent Part Numbers

Emerson TX3 series
Sporlan ER series
ALCO TIE series

Frequently Asked Questions

Is the orifice interchangeable?
Yes. The TE2 valve supports orifice sizes 01–05 for accurate capacity tuning.
Why external equalization?
It compensates for evaporator pressure drop to maintain stable superheat control.
Can it be used with other refrigerants?
No. This valve is calibrated exclusively for R448A and R449A.
What role does the capillary tube serve?
The 59 inch tube links the sensing bulb to the valve for responsive charge control.