Ordering some stuff. need quick advice!

[MaRtIe]

Going to order some stuff

Charging manifold and hoses
Coiled copper tubing
Maybe some insulation, and pipe benders...
Map Gas Brazing torch
just teh usual stuff.

Now, my question involves the charging manifold, its rated at R22, and i need it for r404a and r290

I take it they will be fine... but id just like a second opinion before i buy them.

And my other question is, What size pipeing do you guys usually use in your single stages? 1/4, 3/8 ect, i need a pointer in what size to get, dont want no flimzy :banana::banana::banana::banana:e :)

ah, and finally, the MAP gas torch, currently they only have propane ones.. and im worryed it will not get hot enuf for brazing, so i might have to hold up for that. What ya guys think?

Any advice needed here!

Martie

[SoddemFX]

1/4" discharge, 3/8" suction.

Gauge will work fine, but you'll have to look up vapour pressure-temperatures from a chart instead of having it printed on the gauge. I've never seen a gauge for r290...

I use a big propane torch and it works well, i believe MAPP is hotter and what most people here use.

Tom

[MaRtIe]

so, if ya have the time to sit there and heat it up, propane is fine..

and if ya dont want to waste any time mapp?

There is also r134a guages, wich are cheaper

EDIT: the r22 dont come with hoses :(

[yngndrw]

ah, and finally, the MAP gas torch, currently they only have propane ones.. and im worryed it will not get hot enuf for brazing, so i might have to hold up for that. What ya guys think?

B&Q Warehouse is where I got my MAPP torch. ;)

I've used a butane torch before and it didnt heat up things anywhere near as quick, but I never tried brazing with it.



I THINK the R134a guages would be fine, as they would go upto the same pressure. I think it's just the scales which are different. (Don't hold me to that ! Get a second opinion.)

[MaRtIe]

ah cool, i live by one!

never thought to check it out... figured they only did propane lol

[SoddemFX]

MAPP is hotter, which means more heat output with a given flame. Given the choice i would have a MAPP torch, but propane is cheap and works good enough for me.

Most gauges are rated for several refrigerants. Mine have r12, r22 and r502, the other set for r134a, r22 and r404a. The r134a set may not go up high enough on the high side gauge, although i doubt that it wouldnt work fine. Ive never seen a gauge for only one refrigerant before with the exception of r410...

Tom

[yngndrw]

Yea I looked around all over the place for a MAPP torch .. I couldn't find one so I gave up and went to B&Q for a new butane torch and then I found the MAPP stuff .. It was the last place I expected to find one. :P

[MaRtIe]

ya think it would be fine then or?

r134a guages or teh r22

awe r22 dont have teh hoses with them

[wdrzal]

Be carfull hen buying 134a gauges most are for automotive use and have 1/2 acme fittings instead of the 1/4" sae like a schrader valve.

[MaRtIe]

Be carfull hen buying 134a gauges most are for automotive use and have 1/2 acme fittings instead of the 1/4" sae like a schrader valve.

Here is the discription for the guages
Two Way Standard Manifold without Sight Glass

Two way standard manifold with high quality aluminium body without sight glass. Bourdon type gauges, complete with hook. Supplied in a cardboard box. Temperature scale for gas : R134a = R134a/R404A/R507. Pressure scales : bar and psi

Hoses, seprate
Charging lines/hoses are supplied with teflon gaskets and use a 'quick snapper' system to prevent the hose falling from the connection. High quality 1/4" SAE lines/hoses suitable for all refrigerants. Working pressure 60 bar/870 psi. Supplied as a set of 3 lines/hoses colour coded blue, red and yellow. Length 36" (900 mm).

[MaRtIe]

ok i got the refco R22/R134a/R404A set instead, cost a little more but oh well

1x 15M X 1/4" (22SWG) COPPER TUBE
1x REFCO 2-WAY STAND. MANIFOLD
1x 3 X 1/4 MANIFOLD HOSES
2x 1/4 X 2" COPPER TUBE EXTN. 1/4" OD
2x 1/4 X 2" COPPER TUBE EXTN. 3/16" OD

Thats what i got for tonight, gonna order more stuff in a few days

[SoddemFX]

I have a Refco r134a r22 r404a gauge, probably the same as the one you've ordered, its nice...

Tom

[MaRtIe]

i got it from BES ltd, did you?

[yngndrw]

I got my Refco manifold + hoses from BES Ltd. also, the two valve version with the sightglass. Havn't had a chance to use it yet though. :P

[SoddemFX]

No, it was from RPW.

Standard 2 way with sight glass...

Tom