148B5490

The 148B5490 valve is produced by Danfoss for the SCA Check and Stop Valves series and is intended to control liquid flow in hydraulic automation circuits. Classified as a check and stop valve, it permits forward flow while providing shut-off capability when maintenance or isolation is required. The body is formed in an angleway layout so the pipeline turns ninety degrees without using an external elbow, reducing space inside compact manifolds. An embossed one-way arrow on the casting shows the permitted flow direction, helping technicians avoid reverse installation. Stainless steel is used for all wetted connections to resist corrosion caused by aggressive media. Butt-weld ends sized at 25 mm allow a direct weld to matching tubing for a strong, leak-free joint. The end dimensions comply with EN 10220 so the valve mates with standardized pipe schedules. This configuration represents the standard version, making it compatible with general service duties without special modifications.

The hydraulic capacity is defined by a Kv of 24 m³/h and a corresponding Cv of 27.8 gal/min, figures that assist engineers when calculating pressure drop at the required throughput. Continuous service is supported up to a working pressure of 52 bar, so the valve withstands high-pressure charge lines in closed loop systems. Operation remains stable from −60 °C to 150 °C, a temperature window that covers low-temperature refrigerants and hot oil return alike. The disc lifts when the differential pressure reaches 0.04 bar, ensuring quick opening with minimal pumping losses. Together these limits confirm suitability for demanding automation tasks where wide temperature swings, rapid cycling, and reliable backflow prevention are expected.