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What's the difference is between the gauge sets that are offered for sale here?

befuddled on Tue July 15, 2008 8:53 PM User is offline

Can somebody tell me what the difference is between the gauge sets that are offered for sale on this site?

Mastercool "DIY" Special (66773) $89.42

Mastercool Professional Gauge Set (84772) Price: $125.40

Mastercool Professional Gauge Set (R12, R22 & R502) Price: $74.84--No R134 with this one?

Mastercool Professional (4-Way Gauge Set) Price: $244.85

Are the fittings used for R22 the same as for R12?

What is the prupose of the sight glass on the gauge?

Thank you

TRB on Tue July 15, 2008 10:26 PM User is offlineView users profile

Mastercool "DIY" Special (66773) $89.42
Great weekend mechanic gauge set. Both R12 and R134a couplers are provided.

Mastercool Professional Gauge Set (84772) Price: $125.40
R134a only, higher quality couplers and gauges.

Mastercool Professional Gauge Set (R12, R22 & R502) Price: $74.84
R12 type connections, higher quality gauges.

Mastercool Professional (4-Way Gauge Set) Price: $244.85
Extra hose so you do not have to remove a hose between the vacuum and charging cylinder.

Are the fittings used for R22 the same as for R12?
Yes on many commercial R22 system the same style fitting was used.

What is the purpose of the sight glass on the gauge?
My opinion it does not do much. Never used it when I have a set with one.

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