December 5, 2020

HVAC 2 Position Service Valve: Front Seat & Fully Open Positions!



My Paperback & Ebook: www.acservicetech.com/the-book In This HVAC Training Video, I show the Front Seat and Fully Open Positions of the Common Two Position Service Valve found on Air Conditioners and Heat Pumps. This Valve does not technically have a Back Seat position. I discuss the schrader valve core and accessing the port to read pressure. I also discuss the pump down of a system. Supervision is needed by a licensed HVACR Tech while performing procedures as Experience and Apprenticeship garners Wisdom and Safety. Make sure that you EPA 608 certified before handling refrigerants!

My Book
Tool List-
Support-

Related Videos:
Low Loss Fitting Tests:
Valve Core Removal Tool:
Valve Core Replacement:
Connect and Disconnect the Hoses Procedure:

Here are some of the Tools I use:
Appion Valve Core Removal Tool
RectorSeal Bubble Gas Leak Detector –
25 Valve Cores –
25 ¼” Brass Port Caps with rubber O-rings –
Brass Valve Core Tool which holds 3 valve cores –
Valve Core Torque Wrench –
Locking Cap Universal Lock/Unlock Tool –
Locking caps –
Ratcheting Service Wrench
Yellow Jacket Sealright 90 Coupler-
Yellow Jacket 1pk Compact Ball Valve-
Yellow Jacket 3pk Compact Ball Valve-
Thumb Screw Valve Core Depressor with Backseat-
Yellow Jacket Refrigerant Gauge Set
Refrigerant hoses with valves
Yellow Jacket Gauge set & hoses
Yellow Jacket 4 Port Manifold w Hoses
FieldpieceSMAN360 Digital Manifold Set
FieldpieceSMAN460 Digital Manifold Set
Compact Ball Valve for Refrigerant Hose
QuickDisconnect 90 for refrigerant hose
UEI DL479 Multimeter with temp sensor
JB 6 CFM Vacuum Pump
Appion Blue 3/8″ to 1/4″ Vacuum Hose
Appion Red 3/8″ to 1/4″ Vacuum Hose
Appion Valve Core Removal Tool
Yellow Jacket 1/4″ by 1/4″ hose
CPS Vacuum Micron Gauge
Supco Vacuum Micron Gauge
RectorSeal Bubble Gas Leak Detector
UEI DL389 Multimeter
Fieldpiece ST4 Dual Temp Meter
Air Acetylene Torch setup
15% Silver Brazing Rods
Nitrogen Regulator
Nitrogen Flow Meter
Digital Refrigerant Scale
Accutrak VPE Ultrasonic Leak Detector
Imperial Kwik Charge 535-C
FieldpieceSDMN6 Dual Manometer Pump
Supco Magnet Jumpers
2 pairs of alligator clips-
JB Vacuum Pump Oil
General Tools digital Psychrometer
Fieldpiece SDP2 Digital Psychrometer
Ratcheting Service Wrench
Appion G5 Twin Recovery Pump
Irwin Wire Stripper/Cutter/Crimper

Shop through Amazon! Your Purchases through Amazon provide a means for channels such as mine to earn advertising fees from any purchases after clicking through. Prices are the same as normal-

source: https://sylvaniachristian.com

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11 thoughts on “HVAC 2 Position Service Valve: Front Seat & Fully Open Positions!

  1. My E-Book and Paperback: www.acservicetech.com/the-book

    Tool List- https://www.amazon.com/shop/acservicetech

    Support the Channel- https://www.patreon.com/acservicetech

    For those that are looking for the tools used in the videos: (Linked Below)

    Appion Valve Core Removal Tool http://amzn.to/2uYr8WL

    RectorSeal Bubble Gas Leak Detector – http://amzn.to/2ckWACn

    25 Valve Cores – https://amzn.to/2L37UJU

    25 ¼” Brass Port Caps with rubber O-rings – https://amzn.to/2GIOdD2

    Brass Valve Core Tool which holds 3 valve cores – https://amzn.to/2GFEbm2

    Valve Core Torque Wrench – https://amzn.to/2GHiLoD

    Locking Cap Universal Lock/Unlock Tool – https://amzn.to/2GGAoVp

    Locking caps – https://amzn.to/2GFXZ8A

    Ratcheting Service Wrench http://amzn.to/2dGV4Nh

    Yellow Jacket Sealright 90 Coupler- https://amzn.to/2LsU1V7

    Yellow Jacket 1pk Compact Ball Valve- https://amzn.to/2uXdF18

    Yellow Jacket 3pk Compact Ball Valve- https://amzn.to/2AiKfQe

    Thumb Screw Valve Core Depressor with Backseat- https://amzn.to/2mR0sCL

    UEI DL479 Multimeter with temp sensor http://amzn.to/2jtsUbJ

    Yellow Jacket Refrigerant Gauge Set http://amzn.to/2aenwTq

    Refrigerant hoses with valves http://amzn.to/2aBumVI

    Yellow Jacket Gauge set & hoses https://amzn.to/2vLVkV9

    Yellow Jacket 4 Port Manifold w Hoses https://amzn.to/2BkuGIq

    Digital Refrigerant Scale http://amzn.to/2b9oXYl

    Ratcheting Service Wrench http://amzn.to/2dGV4Nh

    Accutrak VPE Ultrasonic Leak Detector https://amzn.to/2nFYKVe

    Accutrak VPE-GN Ultrasonic Leak Detector https://amzn.to/2Zy4IZP

    FieldpieceSMAN360 Digital Manifold Set https://amzn.to/2BdoaD4

    FieldpieceSMAN460 Digital Manifold Set https://amzn.to/2nB4Fe6

    Ultrasonic Leak Detector with Headphones- https://amzn.to/2B2cRO3

    Compact Ball Valve for Refrigerant Hose https://amzn.to/2KUisW8

    QuickDisconnect 90 for refrigerant hose https://amzn.to/2MMtVcg

    JB 6 CFM Vacuum Pump http://amzn.to/2nqbvo8

    Appion Blue 3/8" to 1/4" Vacuum Hose http://amzn.to/2uYlVyc

    Appion Red 3/8" to 1/4" Vacuum Hose http://amzn.to/2uYg6Ro

    Appion Valve Core Removal Tool http://amzn.to/2uYr8WL

    Yellow Jacket 1/4" by 1/4" hose http://amzn.to/2umtcod

    CPS Vacuum Micron Gauge http://amzn.to/2v1nM3O

    Supco Vacuum Micron Gauge http://amzn.to/2v1JRiA

    RectorSeal Bubble Gas Leak Detector http://amzn.to/2ckWACn

    Magnet Jumpers- https://amzn.to/2PyKPQZ

    Alligator Jumpers- https://amzn.to/2PxqJXn

    Fieldpiece ST4 Dual Temp Meter http://amzn.to/2wc1ME3

    Fieldpiece Bead K Type Temp Sensor https://amzn.to/2DBwKfs

    Fieldpiece Wet Bulb Temp Sensor https://amzn.to/2RRI7Tw

    Fieldpiece TC24 Temp Clamp https://amzn.to/2qHLyjZ

    UEI DL389 Multimeter http://amzn.to/2xAdaJf

    Air Acetylene Torch setup http://amzn.to/2aQalsb

    15% Silver Brazing Rods http://amzn.to/2gVLyLc

    Nitrogen Regulator http://amzn.to/2bXdR5f

    Nitrogen Flow Meter http://amzn.to/2brvoBg

    Other tool links can be found in the video description section.

    Shop through Amazon! Your Purchases through Amazon provide a means for channels such as mine to earn advertising fees from all purchases after clicking through. Prices are the same as normal- https://www.amazon.com/shop/acservicetech

  2. I have a question on the brass style service valve. Some units will not braze in right. I use 15% rods with oxy- acetylene. I've heard of the brazing paste but haven't tried that yet. I dont like to put alot of time heating the valve, I use wet rags around valves with schraders out and flowing about 3-5 psi nitrogen. What's your take on this and what you would do? Thank you

  3. I heard there was a large law suit on those older valve with snap ring. A technician unscrewed the valve past the breaking point point on a new unit install, not for sure if he got seriously hurt or it was fatal, but the law suit was won, that is the reason of the newer style of valve

  4. Having only worked on refrigeration units the first time I looked at a friend's central unit, I removed that cap and tried turn it back!

  5. Good morning Craig. Awesome video! But I have a question for you. Is it possible for the king valve to leak even though it's capped off really tight. Will the system still lose refrigerant?

  6. I received your book a couple of days ago and I’m very impressed. It is a wealth of knowledge written the way you do your videos- very in-depth without fluff. I received my license this week and I used your videos as a huge supplement to my studying of books. It’s helpful to SEE the procedures. Thanks for all your hard work. If you’re ever in Alabama, lunch is on me.

  7. I've a question regarding Mini Multi Split service valve…

    If the valve is leaking gas due to a bad O Ring in Open position but in close position there is no gas leak (no hissing sound) then if we do a vacuum in such a machine then will the vacuum hold or not ?

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