Danfoss 034L0049 Pressure Regulator

Ensure your refrigeration system remains within safe operating parameters with the Danfoss 034L0049, a high-performance KVL 15 crankcase pressure regulator. Designed for installation in the suction line, this crankcase pressure regulating valve protects the compressor motor against overload during startup—especially after long standstill periods or defrost cycles when evaporator pressure is high. This 5/8" solder ODF connection valve features a technical design that limits suction pressure at the compressor inlet, effectively preventing "slugging" and electrical surges. With a Max Working Pressure of 260 psig and a factory setting of 29 psig, the KVL 15 utilizes a pressure-equalizing bellows to ensure the regulation is independent of inlet pressure variations. This robust Danfoss KVL 15 suction regulator is compatible with most HCFC and HFC refrigerants, offering a wide medium temperature range from -76°F to 266°F for versatile field application.

• Compressor Overload Protection: Throttles the suction pressure automatically to prevent motor burnout during peak loads.
• Pressure-Equalizing Bellows: Ensures stable regulation regardless of fluctuations on the inlet side.
• Hermetic Construction: Solder ODF connections provide a leak-proof, compact design for tight suction line groups.
• Wide Refrigerant Compatibility: Suitable for systems utilizing R404A, R134a, R407C, and other modern refrigerants.
• Field-Adjustable: Precise set-point control allows for fine-tuning based on specific compressor manufacturer requirements.

• Where should the KVL 15 be installed in the circuit? It must be installed in the suction line as close to the compressor as possible to accurately regulate the inlet pressure.
• How do I adjust the pressure setting? Remove the protective cap and turn the setting screw; clockwise increases the opening pressure, while counter-clockwise decreases it.
• Can this be used in CO2 systems? No, with a max working pressure of 260 psig (18 bar), it is generally restricted to standard HFC/HCFC refrigeration cycles.

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.