Danfoss 034L0021 Pressure Regulator

The Danfoss 034L0021, technically designated as the KVP-12 evaporator pressure regulator, is a high-precision mechanical valve designed for suctions-side pressure modulation. For technicians managing multi-evaporator systems on a single rack or compressor, this regulator is critical for maintaining a stable evaporating pressure regardless of load fluctuations. With its 1/2 inch flare connections and a robust Kv value of 2.5 m³/h, it ensures reliable flow control in medical, food service, and industrial cooling applications. The KVP-12 provides an effective solution for preventing evaporator freeze-ups in water chillers by establishing a minimum pressure threshold. Rated for a maximum working pressure of 260 psig (18 bar) and compatible with a broad range of HCFC, HFC, and HC refrigerants, this valve offers the versatility required for modern retrofit and new builds. The hermetic design and bellows construction provide superior leak protection, ensuring long-term system integrity in demanding environments.

• Precise Pressure Regulation: Features a regulation range from 0 to 5.5 bar (0 to 80 psig) for exact temperature control in low and medium-temperature applications.
• Multi-Evaporator Efficiency: Allows for independent temperature settings on multiple evaporators connected to a common suction line.
• System Protection: Acts as a safeguard against low-pressure spikes, preventing ice formation and potential compressor slugging.
• Durable Construction: Built with stainless steel bellows to withstand vibration and thermal stress common in commercial refrigeration.
• Ease of Service: Equipped with a Schrader valve access port for rapid pressure monitoring and setpoint adjustment in the field.

• What refrigerants are compatible? The Danfoss 034L0021 is compatible with R22, R134a, R404A, R507, R407C, and newer blends like R513A and R1234ze.
• Where should the KVP be installed? Always install the regulator in the suction line, ideally immediately after the evaporator it is intended to control.
• How do I adjust the setpoint? Use a standard 10mm hex key to turn the adjustment screw; clockwise increases the pressure setting (higher temperature), while counter-clockwise decreases it.

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.