Danfoss 034L0045 KVL22 Crankcase Pressure Regulator 7/8" ODF Solder

The Danfoss 034L0045 KVL22 is a crankcase pressure regulator designed to protect refrigeration compressor motors against overload during start-up after long standstill periods or defrost cycles. This valve opens when suction pressure ahead of the compressor drops below the set value, preventing motor strain and extending compressor life.

Key Features:

• 7/8" (22mm) ODF solder connections on inlet and outlet
• Operating pressure range: 0.2 to 6 bar (29 to 87 psi)
• Maximum working pressure: 18 bar (260 psi)
• Kv value: 3.2 m³/h for precise flow control
• Equipped with equalization bellows to prevent inlet pressure variations from affecting regulation
• Built-in damping device protects against pulsations and ensures long service life
• P-band maximum: 2.0 bar (29 psi)

Applications:

Compatible with a wide range of refrigerants including R22, R134a, R404A, R407C, R407F, R448A, R449A, R450A, R507, R513A, and many others. Ideal for commercial refrigeration systems, cold storage applications, and HVAC installations where compressor protection is critical.

Technical Specifications:

• Connection type: Solder (ODF - Outside Diameter Flare)
• Inlet/Outlet size: 22mm (7/8")
• Overall height (H1): 179mm (7.0")
• Body length (B1): 64mm (2.5")
• Net weight: 0.4 kg (0.88 lbs)

The KVL22 regulates based solely on outlet pressure, ensuring consistent performance regardless of inlet pressure fluctuations. The precision-engineered valve plate and seat design provides accurate regulation throughout the operating range.