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MASTERCOOL 90262 Manual Shut Off Adapter Review

3

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Very good

Revainrating 4.5 out of 5  
Rating 
4.3
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Description of MASTERCOOL 90262 Manual Shut Off Adapter

Straight and Manual Shut-off Valve Set includes: Blue 1/4" x 1/4"; Yellow 1/4" x 1/4" and Red 1/4" x 1/4". Ball valve design with flexible hose controls refrigerant with a quarter turn of the valve handle. Meets SAE, EPA and UL requirements for containment of refrigerant. Can be operated with one hand. Screws onto charging hose end.

Reviews

Global ratings 3
  • 5
    2
  • 4
    0
  • 3
    1
  • 2
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  • 1
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Type of review

Revainrating 5 out of 5

Useful Aids: Tools and equipment

Allows valves to be closed from possible air pollution. Also adds a little extra insurance to detect leaks during vacuum pull.

Pros
  • Screws at the end of the inflation hose
Cons
  • Retrofittable

Revainrating 3 out of 5

works fine for a while.

I'm a little disappointed! I really only need one check valve on the high pressure side, but thought it would be nice to have a set of three in case one of them breaks. I've serviced about 15 units with this and then the o-ring flew out after unplugging it from the unit! Then I put on one of the others and did about 3 more sets before THAT 0-ring fired too! Maybe it wouldn't be so bad if I could find the 0-ring after they shot through the hose, but I couldn't. Now I have the last one left of…

Pros
  • Meets SAE, EPA and UL refrigerant content requirements
Cons
  • Out of fashion

Revainrating 5 out of 5

Supports advanced HVAC repair methods

Bought these for 3 reasons: 1. Allows me to drain the manifold lines and sensors before replacing them connect to the HVAC system. I simply open the manifold valves and draw a vacuum on the unit, then close all the valves before connecting them.2. Allows me to prevent air and moisture ingress when I switch the charge hose from the vacuum pump to the refrigerant tank. I know most techs just break the filler plug on the manifold to allow the refrigerant to fill the system and force the air out…

Pros
  • Straight & Manual Shutoff Valve Kit Includes: Blue 1/4" x 1/4"; Yellow 1/4" x 1/4" and Red 1/4" x 1/4"
Cons
  • unreliable