another question regarding suction line

[f00t]

at themoment i am in need for a suction line for a small dd system and have the choice between two different typs. the first is a black "rubber" suction line found at refrigeration shops, while the other is a stainless steel one found in the plumbing section of harware stores. i have used the first before and liked it cause it didn't have any leaks.

this is the ss suction line and the descriptio that comes with it:

http://a75.g.akamai.net/v/75/10142/12h/images.escalate.com/images/products/hd90120/000/007/000007016.jpg

"Complete with unique full flow 1/2" x 60" Stainless Steel Braided Connector, Ball Valve water shut off, discharge hose, 1 1/2" ABS Tee Y and Teflon Tape"

^^^ straight from home depot web site

i have seen this kind of ss hose at a local hardware shop before and the inside is ss, not teflon, the reason why i ask whether theis is a good choice for a suction line is because it is originally made for a dishwasher and i don't not know if it will hold the pressure.

has anyone used this for a suction line before and, if so, how did it work?

[Scout255]

I wouldn't want to use it personally. They use those on toilets alot as well for the emergency shutoff valve. If you really want SS, chilly has braided SS suction lines for sale I believe at a nice price. Perhapse he could help you out (just PM him)

[gclg2000]

cool, i'm looking for suction line too

[kayl]

if the inside of the hose is stainless steel then you can use it.
if not it may or moay not hold the pressure or leak over time.
1/2" is a good size though to use.

[f00t]

i check out the ss hose today and it is completely ss on the inside, kayl. getting a suction hose from chilly1 is kinda difficult cause im in canada and i need one by the 17th dec and shipping takes 2 weeks (if i don't wanna pay border fees)

[gclg2000]

good luck

[Scout255]

took mine about 4 days to arrive I believe.
It may be a good idea to just stop by an HVAC supply house and ask them for some flex hose.

[f00t]

lol, i tried that and they just looked at me stupidly. their like "wtf is that" and it took them 10mins to find it in their catalog/inventory list after i explained it to them

[kayl]

i check out the ss hose today and it is completely ss on the inside, kayl. getting a suction hose from chilly1 is kinda difficult cause im in canada and i need one by the 17th dec and shipping takes 2 weeks (if i don't wanna pay border fees)


i say grab it. if its stainless steel in and out then that rated to thousands of psi.
basically that hose is the same hose that most ppl use and its got screw fittings. fittings arnt cheap to have the shop fit. :toast:

[Scout255]

Hmmm, well if you are going to use it on your system, i suggest filling it with nitrogen up to 10 bar or so and test it with soap & water to see if it will leak.

It's just that hoses desigened to hold a liquid at low pressure will not nessisarily hold a high pressure gas irrigardless of what they are constructed of.

[buffarilla]

nice info

[chilly1]

The satinless line you have if it is stainless inside and willbe used on a refrigeration suystem look for the rating and see that is has a burst pressure at least twice as high as the refrigerant you are using, and a working pressure 20 % higher than teh maximunm pressure you will put it under..

[fatty]

Tell us what you use chilly please so all us noobs can get the same thing :)

[chilly1]

I use parker flex lines about the same as used as strainreliefs on large sompressors, I have also used stainless welded lines and parker high pressure refrigerant hoses.. the parker stuff can be ordered fro Johnstone or me. and the stainless I can get but comes from an hydraulic hose supplier.

[kayl]

hydraulic hose supplier
thats where i get mine

[fatty]

Cheers guys most appreciated I have found some ss hydraulic stuff I am about to find out its working and bursting pressures

[fatty]

Here is the hose I will be getting 16" long 1/2" diameter and with straight 1/2 copper fittings for only £12 each

from HERE (http://www.flexej.co.uk/content/P12.htm)

[Russell_hq]

16" seems really short. Are you sure it will be long enough?

[kayl]

that is very short, will need to use a coil on suction line as well to make up xtra length
i guess it only needs to be flexable at the end.

[fatty]

16" is the standard size of the flexable part of the suction line on a mach 2 any longer and the doors of your case wont shut :eek:

[gclg2000]

i see