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This is a manual recharge hose for topping up R134a car air conditioning systems. It pairs a 72mm spring pressure gauge with a rubber hose, a screw-on can tap for R134a cans and a 1/4 SAE service port fitting, plus a built-in safety valve to limit accidental venting. It suits DIY owners who want to check low-side pressure and add refrigerant themselves rather than pay a shop. Compared with pro manifold gauge sets it is a single low-side tool with no high-side reading, so it covers simple top-ups, not full system diagnosis.
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Lowest price we've seen: $19.99 on Nov 13 at Amazon; highest $20.40 on Nov 2. Tracked across 2 stores since Nov 2.
This is an R134a air conditioning recharge hose with a built-in gauge. It is used to check low side pressure so an automotive A/C system can be filled accurately. It has an R-134a screw-on can connection and a 1/4 SAE connection for the service port.
The hose is made of rubber, and the fittings are aluminum and copper. A spring pressure indicator on the gauge has an accuracy error of 1.5 level. The knob handle is sturdy and is rated for more than 50,000 uses. A built-in safety valve helps prevent accidental venting.
The gauge is easy to read during use.