Reddit reviews SURIEEN 3 Colors R134A Straight Compact Shut-Off Ball Valve Adapter 1/4" SAE Thread Fits for HVAC A/C Refrigerant R134A R12 R22 R502 Charging Hoses Air Conditioning Refrigerant Tools - Set of 3
We found 1 Reddit comments about SURIEEN 3 Colors R134A Straight Compact Shut-Off Ball Valve Adapter 1/4" SAE Thread Fits for HVAC A/C Refrigerant R134A R12 R22 R502 Charging Hoses Air Conditioning Refrigerant Tools - Set of 3. Here are the top ones, ranked by their Reddit score.
STRAIGHT BALL VALVE ----- The R134A shut valves are compact 1/4″ female flare by 1/4″ Male flare. This coupler nuts are deeply knurled for quick finger-tighteningWIDE APPLICATION ----- Standard ball valve for refrigerants R134A, R22 and R12 charging hoses and manifold. Great tools for car air conditioner, mini split units, condenser, home air Conditioning HVAC charging and recovery.MANUFACTURE STANDARD ----- The compact ball valve made by high quality Brass Alloy. Meets SAE, EPA and UL requirements for containment of refrigerant. 800 psi (55 bar) maximum working pressure and 4000 psi (276 bar) minimum burst pressure.EASY INSTALLATION ----- The compact switch ball valve can be operated with one hand - Screws onto charging hose end. Ball valve design with a quarter turn of 3 color (Red/Yellow/Blue) coded valve handle switch for controls refrigerant.1 YEAR WARRANTY ----- 3 colors R134A ball valve offer 1-year limited warranty. If you have any questions about our product, please feel freely contact us.
Had a similar problem, found out that the pump does not hold vacuum when shut off. Added a shut off valve to the yellow service hose, closed the valve before shutting off the pump when at 30 mmhg. Held vacuum after that. Not sure this is your solution is but thought I would share my experience.
Something like this. Attached the yellow valve to the end of the service hose and the other end to the pump port.
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