Danfoss 068U2025 TUBE TXV Thermostatic Expansion Valve R134a 3/8" x 1/2" Orifice 08 External Equalizer

The Danfoss 068U2025 is a TUBE-series thermostatic expansion valve (TXV) engineered for R134a refrigerant systems. With a 3/8" inlet x 1/2" outlet tube connection and orifice size 08, this valve delivers a rated nominal capacity of 2.40 tons, making it well-suited for medium-capacity refrigeration and air conditioning applications.

This valve features external pressure equalization, which senses evaporator outlet pressure through an external equalizer line. This design compensates for pressure drops across the evaporator and refrigerant distributor, ensuring accurate and stable superheat control across a wide range of load conditions — an important advantage in multi-circuit evaporator systems.

Key Features:

• Valve Type: TUBE (externally equalized)
• Refrigerant: R134a
• Orifice Number: 08
• Connections: 3/8" inlet x 1/2" outlet (ODF tube/solder)
• Rated Nominal Capacity: 2.40 tons
• Temperature Range (Range N): -40°F to +50°F (-40°C to +10°C)
• Pressure Range: 0 – 475 psig
• Body Material: Brass with stainless steel internals
• Pressure Equalization: External, 1/4" ODF connection

The Danfoss TUBE series TXV regulates refrigerant flow into the evaporator by responding to suction line superheat, protecting the compressor from liquid slugging while maximizing system efficiency. The durable brass body and stainless steel internals provide long service life in demanding HVAC-R environments. This valve is part of the Danfoss TU/TC family and is compatible with standard Danfoss bulb straps and accessories.