Danfoss 068Z3348 Expansion Valve

The Danfoss 068Z3348 TEN2 Expansion Valve is a high-performance thermostatic expansion valve (TXV) designed for precise refrigerant flow control in R134a and R513A systems. This externally equalized valve features 3/8" x 1/2" flare connections and an angleway configuration, ensuring stable superheat regulation across a broad operating range of -40°F to +50°F. Built with a brass body and a hermetic, laser-welded stainless steel power head, it provides exceptional durability and reliable pressure balancing for commercial refrigeration and chiller applications. The unit includes a 59-inch capillary tube and a bulb strap, allowing for fast, secure installation and superior temperature transfer from the suction line. As part of the versatile T2/TE2 series, the 068Z3348 utilizes replaceable orifices to match specific evaporator loads, making it a critical component for technicians maintaining supermarket display cases and transport refrigeration units.

• Precise Superheat Control: Adjustable static superheat setting (7.2°F factory default) allows for fine-tuning at 1.75°F per 1/4 turn to optimize evaporator efficiency.
• Enhanced System Stability: The external equalization connection (1/4" flare) compensates for pressure drops across the evaporator, preventing hunting.
• Durable Construction: Features a stainless steel power head and brass body rated for a maximum working pressure of 500 psig (34 bar).
• Field Versatility: Compatible with both R134a and R513A refrigerants, supporting a wide range of medium and low-temperature applications.
• Serviceable Design: Interchangeable orifice assembly simplifies capacity matching and onsite maintenance without replacing the entire valve body.

What is the primary benefit of the external equalizer on the Danfoss TEN2?
The 1/4" external equalizer allows the valve to sense the actual pressure at the evaporator outlet, ensuring accurate superheat regulation even in systems with significant pressure drops.

Can this valve be used with refrigerants other than R134a?
Yes, the 068Z3348 is officially rated for use with both R134a and R513A refrigerants, provided the corresponding orifice and oil compatibility are verified.

Is the orifice included with the 068Z3348 valve body?
No, this is a part of the Danfoss TE 2 parts program; the valve body and orifice are sold separately so you can customize the capacity (ranging from 1/5 to 3 tons) to your specific project needs.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.