Danfoss 034L0045 Pressure Regulator

The Danfoss 034L0045 is a professional-grade KVL 22 crankcase pressure regulator designed to protect compressor motors against overload during startup after long standstill periods or defrost cycles. Built with a hermetic, brazed construction, this valve features 7/8" ODF solder connections and is engineered for installation in the suction line immediately ahead of the compressor. The KVL 22 effectively limits suction pressure to a set maximum value, ensuring the motor does not exceed its rated current draw during pull-down.

This crankcase pressure regulating valve is compatible with a wide range of refrigerants, including CFC, HCFC, and HFC blends, making it a versatile choice for commercial refrigeration and air conditioning systems. It has a factory setting of 29 psig (2 bar) and an adjustable range of 3 to 87 psig (0.2 to 6 bar), allowing technicians to fine-tune system performance based on specific compressor requirements. With a Max Working Pressure (MWP) of 260 psig and a high Kv value of 3.2 m³/h, the Danfoss KVL 22 provides responsive pressure control and reliable protection for critical HVACR infrastructure.

• Compressor Motor Protection: Prevents motor burnout by limiting suction pressure during high-load conditions and hot-gas defrost recovery.
• Durable Hermetic Design: The 7/8" solder KVL22 utilizes a pulse-dampening bellows and stainless steel construction for high vibration resistance and long-term reliability.
• Universal Compatibility: Approved for use with common refrigerants, providing a standardized solution for various suction line pressure regulation applications.
• Precise Pressure Maintenance: Features a wide regulating range (3-87 psi) to accommodate specific manufacturer startup parameters.

• Where should the KVL 22 be installed? This regulator must be installed in the suction line as close to the compressor as possible to accurately sense and limit the inlet pressure.
• What refrigerants are compatible with Danfoss 034L0045? It is suitable for use with HFC, HCFC, and CFC refrigerants, as well as oil-free applications.
• Does this model include an access port? No, the 034L0045 is the standard model without an integrated Schrader valve access port.

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.