Capillary tube 0.91 mm
A capillary tube with a 0.91 mm dimension—typically referring to an internal diameter (ID) of roughly 0.9 mm. Or a specifically designated 0.91 mm wall thickness for R410a tubing. Primarily used for precision fluid control in refrigeration and air conditioning systems.
- Refrigerant Flow Control (HVACR): Acts as a throttling device between the condenser and evaporator in domestic refrigerators, freezers, and air conditioners to reduce pressure.
- High-Pressure System Component: Copper tubes with 0.91 mm wall thickness are used for R410a and other high-pressure refrigerants, often to connect gauges, pressure switches, or as part of the cooling circuit.



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