Refrigerant Service Valve Positions

Service valves are found in many applications of an air conditioning and refrigeration system. Knowing the common valve positions is key to servicing and troublehooting.

[@hectortorres542]

Finally found a mechani. Can't explaining the valve function. Function just one. Thank you when you start from city one turn. The term is cracked to the port. Thank you for the video

[@hvguy]

Just what I needed! I was wondering why no freon was going in.... Turns out I have no idea what I'm doing. But now I kinda do!

[@beardowns8050]

Awesome tip I was never taught to do that. Now I always do when servicing on those valves

[@HVACKnowItAll]

no worries, thank you!

[@jparker19822009]

@@HVACKnowItAll please use a service wrench and show which direction to turn the valve

[@leroytheconvoy713]

@@jparker19822009 lefty loosey, righty tighty..

[@Skunkhunt_42]

​@@leroytheconvoy713looking from where?

[@kirubakaran3695]

Very useful information, I was searching for it.

[@cruzfernandez4554]

Very appreciated information. Thank you so much.

[@HVACKnowItAll]

You're welcome

[@jonathanjuarez316]

Thank you so much!!!

[@Dan-ger82]

I work in ammonia and they tell us don't loosen packing valves because it can start leaking ammonia out when you crack valve. Had it happen a bunch of times when packing loose. We just lubricate stem with some refrigerant oil and then cycle it.

[@HVACKnowItAll]

Interesting, I appreciate the info!

[@channelcatchaser9426]

Great information learned something today!

[@AsG_4_]

Thanks I needed this refresher ☺️

[@HVACKnowItAll]

No worries, my pleasure

[@AsG_4_]

@@HVACKnowItAll got yourself a subscription 😎👍

[@swapnilshirke7767]

Great information please update all more videos

[@HVACKnowItAll]

Thank you!

[@upshotliberation4234]

Can you do a video on oil change for bitzer compressor. You explained it well, i wish we have proper oil change procedure video on this.

[@tallevi6172]

Thank!!

[@seaspidermariner9164]

Good explanation

[@HVACKnowItAll]

Thank you!

[@jfs520]

Thank you

[@HVACKnowItAll]

My pleasure

[@MindFocusMusic-]

Cool video, nice and clear

[@DeanLeatherman]

Forgive me to say that most of this information is pretty obvious. The part you left out, and the information I need, how do these valves open and close - clockwise or counterclockwise? I only work on my own now, but I forget this every time. I need to mark it on the valve cap.

[@HVACKnowItAll]

If they're back seated, it will turn clockwise to crack the valve.

[@user-dc1pe7qq9j]

Cuu cuu clockwise

[@mikeclark1756]

Great Job

[@HVACKnowItAll]

Thanks Mike!

[@aarongray503]

Thanks

[@MajorChipHazard16]

So if I needed to add refrigerant I would need to back seat the valves, correct?

[@HVACKnowItAll]

The valve should already be back seated. Yiu woukd need to crack them slightly

[@mattsmith1103]

hey can you do a similar video on how to re-pack this king valve?

[@HVACKnowItAll]

This is not actually a king valve. King valves are positioned on the receiver outlet.

[@aaronclark1599]

I'm a New Subscriber

[@SombraLocs]

Happy HVACing!

[@HVACKnowItAll]

You know it!

[@hovh03]

Should the valve "not" accessible to the compressor when front seated (you said it "is"). When front seated, the service valve opens to the connecting hose.

[@hovh03]

Maybe your setup is different

[@Username-ng8jy]

Eh like 99.9999 percent of them when front seated kills flow to the hose port. Same when backseated. The middle is where the service port gets flow.

[@johnmike4110]

Is it true that ammonia valves should be either fully open or fully closed, otherwise valves are going to leak ??

[@numanmirza9584]

Sir some people said don't open the packing gland before close the valve its right or rong we will close the packing gland or not

[@MustafaSunar]

Hi, Very beneficial video. Thank you very much for your effort. I want to add subtitles in Turkish. Could you give permission for subtitles?

[@sardarmazoor]

❤❤❤❤

[@chris34963]

Sorry to bother u but we’re can I get the rubber piece that’s in front of the packing nut ? iv been using Teflon tape but it’s only working for bout few months then I would have to replace it

[@HVACKnowItAll]

Your best bet is the compressor manufacturer, but you can use Nylog too

[@chris34963]

Iv been using teflon with nylog but I will ask the manufacture but any additional help will help me greatly

[@HVACKnowItAll]

@@chris34963 With Nylog, you really don't need teflon tape. Good luck on traking those rubbers down, I rarely see them around any more.

[@SW-px8wt]

My service valve (Carrier) does not have a lock nut. Instead, it has a sunk ring with two slots (wish could upload a picture), which may need a special tool to torque. Anyone know how to do? Thx!

[@acey8274]

I always have trouble trying to open the valves my service wrench gets stuck

[@billlegg4686]

To connect gauges, do you have the stem back seated?

[@yomom857]

have it mid seated if you want to read pressures

[@maggotthemadman8142]

@@yomom857 or just cracked a single half turn, that is usually what I do.

[@Username-ng8jy]

Yeah just crack it honestly towards front seat. If you charge or pull vacuum then full mid seat. But if you’re trying to read pressures. Just crack it.

[@deanburke3041]

Always confused me. Only 3 positions. Just know what's going on in each one to avoid a terrible mistake out of control.

[@juanontiveros3073]

I’m going to get recycled and reclassed

[@sarahgibon5610]

.

[@deanburke3041]

Always confused me. Only 3 positions. Just know what's going on in each one to avoid a terrible mistake out of control.