Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: DrAndyB on 30 August 2014, 12:59:49

Title: Air Con Low Pressure Valve - Part Number ??????
Post by: DrAndyB on 30 August 2014, 12:59:49
Hi,

Just been to Nigel Langs and A/C now ICE COLD  :y (Just ready for the winter  :D)

We replaced the High Pressure valve (courtesy of the much valued guide on here  :y ) as this I believed was why the pressure was lost since vac out and re-gas a few months ago (I even saw bubbles when cap undone)  NO leaks elsewhere when coupled to the A/C test kit.

It was noticed however that the Low Pressure valve (one by the bulkhead at back of engine bay on the top) did have a "small" bubble when all regas pipes removed. 

I am hoping that the valve cap maybe enough just to stop any small release (may have a chance as its on the Low Pressure side ?)

However, as a preemptive strike does anybody know the Part number for the Low Pressure valve ????

I believe it is a difference part to the HP Valve with the LP (Low Pressure) one more of a "Car Valve" arrangement with what appears the only bit to change the valve core in the middle ???? (like on car Schrader valve).

Thanks in advance.
Andy.

P.S
Just done my first Omega glove box handle replacement - what a faff !!! :o (now enjoying working glovebox  :D)


 
Title: Re: Air Con Low Pressure Valve - Part Number ??????
Post by: Andy B on 30 August 2014, 13:03:33
No idea of the part number, but it seems that it's the only one that the parts counter staff can usually find. Yes, it's just like a tyre/schrader valve.  :y
Title: Re: Air Con Low Pressure Valve - Part Number ??????
Post by: Mr.OmegaMan on 30 August 2014, 20:36:49
Is there no part number for the Low Pressure valve then ?  :-\ It looks as if I'm in need of one I can see bubbles once the dust cap has been removed.. Ideally need a part number by Monday.
Title: Re: Air Con Low Pressure Valve - Part Number ??????
Post by: biggriffin on 30 August 2014, 21:21:58
use a standard tyre valve core :y
Title: Re: Air Con Low Pressure Valve - Part Number ??????
Post by: Mr.OmegaMan on 30 August 2014, 22:20:56
use a standard tyre valve core :y

These kind Link (http://www.ebay.co.uk/itm/TYRE-VALVE-CORE-REMOVER-REMOVAL-TOOL-WHEEL-INNERTUBE-FOUR-FREE-CORES-/201066297456?pt=UK_Cars_Parts_Vehicles_Wheels_tyre_Trims_Trims_ET&hash=item2ed07c3870)  :-\
Title: Re: Air Con Low Pressure Valve - Part Number ??????
Post by: 05omegav6 on 30 August 2014, 22:22:39
Aye, thems do :y
Title: Re: Air Con Low Pressure Valve - Part Number ??????
Post by: DrAndyB on 30 August 2014, 22:54:41
Thanks all for help.  :y
Title: Re: Air Con Low Pressure Valve - Part Number ??????
Post by: chrisgixer on 30 August 2014, 23:17:53
In the words of my ac guy "they are just Schrader valves"
Title: Re: Air Con Low Pressure Valve - Part Number ??????
Post by: Andy B on 30 August 2014, 23:33:27
is the seal in a normal tyre schrader valve compatible with R134a & the oil? Just asking because the seal supplied with the other is a green Viton seal  :-\ :-\
Title: Re: Air Con Low Pressure Valve - Part Number ??????
Post by: DrAndyB on 31 August 2014, 09:04:33
Confused now  :-\

According to http://www2.dupont.com/Refrigerants/en_US/assets/downloads/h45945_hfc134a_push.pdf (http://www2.dupont.com/Refrigerants/en_US/assets/downloads/h45945_hfc134a_push.pdf) Viton does not look the best replacement seal from table 6 when lists "Severely Unnaceptable change" when using HFC 134a !!

Fingers crossed !
Title: Re: Air Con Low Pressure Valve - Part Number ??????
Post by: 4x4 on 31 August 2014, 09:09:49

http://www.ebay.co.uk/itm/R134A-AIRCON-GM-SCHRADER-VALVE-CORE-PACK-5-2673-/400198885451?pt=UK_Hand_Tools_Equipment&hash=item5d2db6604b
Title: Re: Air Con Low Pressure Valve - Part Number ??????
Post by: Andy B on 31 August 2014, 09:16:22
Confused now  :-\

According to http://www2.dupont.com/Refrigerants/en_US/assets/downloads/h45945_hfc134a_push.pdf (http://www2.dupont.com/Refrigerants/en_US/assets/downloads/h45945_hfc134a_push.pdf) Viton does not look the best replacement seal from table 6 when lists "Severely Unnaceptable change" when using HFC 134a !!

Fingers crossed !

Maybe it's not Viton then ..... just assumed it was. It's definitely green though  ;)
Title: Re: Air Con Low Pressure Valve - Part Number ??????
Post by: DrAndyB on 31 August 2014, 12:47:00
Maybe it's not Viton then ..... just assumed it was. It's definitely green though  ;)

Yep green   ;)  Replaced mine yesterday and had good look before fitted  :y
Title: Re: Air Con Low Pressure Valve - Part Number ??????
Post by: Mr.OmegaMan on 31 August 2014, 14:49:40

http://www.ebay.co.uk/itm/R134A-AIRCON-GM-SCHRADER-VALVE-CORE-PACK-5-2673-/400198885451?pt=UK_Hand_Tools_Equipment&hash=item5d2db6604b

Ideal, Ordered  :y
Title: Re: Air Con Low Pressure Valve - Part Number ??????
Post by: DrAndyB on 31 August 2014, 16:24:27
:y  I have some now  :y  (Just in case !)

Title: Re: Air Con Low Pressure Valve - Part Number ??????
Post by: Mr.OmegaMan on 03 September 2014, 16:35:16
Okay I received the GM A/C low pressure valves along with the cheap red ones..

The GM ones on the right don't fit, The Left red one was the same type removed from the car so I presume it's safe to put a new one of them in.  :-\

(http://i1158.photobucket.com/albums/p620/Agemo_Legend/047ADE88-6754-4C1E-A4BE-98D22144339C_zpsy05ivkiu.png) (http://s1158.photobucket.com/user/Agemo_Legend/media/047ADE88-6754-4C1E-A4BE-98D22144339C_zpsy05ivkiu.png.html)
Title: Re: Air Con Low Pressure Valve - Part Number ??????
Post by: DrAndyB on 03 September 2014, 17:50:24
Hummm.  My "GM" ones also arrived and same as the ones on the right in your PIC !!!

Where did you get the red ones from ? as I obviously need one of them (or may not as :D as  not checkd a/c since re-gas at  weekend !!

Cheers,
Andy.
Title: Re: Air Con Low Pressure Valve - Part Number ??????
Post by: Mr.OmegaMan on 03 September 2014, 17:57:56
Post #4 I put a link to the red ones  :y

Title: Re: Air Con Low Pressure Valve - Part Number ??????
Post by: DrAndyB on 03 September 2014, 18:32:27
 :y :y :y  I shall order some of them as well then  >:( >:( >:(