Danfoss EVT 1.2 CO₂ Solenoid Valve (068F0600) – 140 Bar, 3/8" ODF Brazed, NC | R744 Transcritical

Danfoss EVT 1.2 (code 068F0600) is a high-pressure solenoid valve specially designed for CO₂ (R744) transcritical refrigeration systems. It withstands a working pressure of 140 bar — far above standard HFC solenoid valves (EVR series, ~35-45 bar). It is normally closed (NC): it opens when the coil is energized.

140 Bar Solenoid Valve for CO₂ (R744) Transcritical Systems

⚠️ This valve is not a standard refrigerant solenoid. In CO₂ systems, pressures rise to 3-4 times those of HFC systems; an ordinary solenoid valve cannot withstand this pressure. The EVT series is made for this job.

According to the official Danfoss documentation, the EVT 1.2 is direct operated and is used in the following applications: oil return, pressure equalization / relief control, high-pressure hot gas bypass / dump and hot gas defrost. Because it is direct operated, it does not require a minimum pressure differential — it also opens at zero ΔP. (Its larger siblings EVT 2.0 and 3.0 are servo operated and require a 2 bar minimum differential.)

Technical Specifications (Official Danfoss Data Sheet)

• Model: Danfoss EVT 1.2 | Code: 068F0600 (multi pack) · 068F0625 (single pack)
• Refrigerant: R744 (CO₂) — transcritical and subcritical systems
• Max. Working Pressure (PS/MWP): 140 bar (2,030 psi)
• Function: NC — normally closed, direct-operated mini piston
• Kv Value: 0.05 m³/h
• Connection: 3/8" ODF solder (copper)
• Media Temperature: −40 … +150 °C
• Body: ECO brass (lead-free, <0.1%) · stainless steel Swagelok connection option (ODM)
• Dimensions: Height 80 mm · body 43 mm · inlet-outlet 51 + 15 mm — official dimension drawing in the 2nd image
• Weight: 0.22 kg (without coil)
• Compliance: RoHS II, REACH, LVD and PED

• 🚨 Coil sold separately: The valve and coil are separate products. A suitable Danfoss clip-on coil (e.g. 018F6176, ≈0.27 kg) must be ordered separately.
• 🔧 Cool the body with a wet cloth while brazing and remove the coil; the flame will burn the coil winding.
• Mind the flow direction: It is installed in the direction of the arrow on the body; if installed in reverse, the valve leaks.
• Safety in CO₂ systems: Due to the high pressure, commissioning and service work must be carried out by a technician trained in CO₂.