Was watching and old episode of ATOH the other day and Rich was with
an AC guy in Florida. They were installing AC in a garage. To make
the connections the guy just flared the pipe and tightened them down.

I know on cars brake lines will leak if you don't double-flare them.
Is the pressure in an AC system that much lower that a single-flare
won't leak?

Must be. I typically use silver solder, or silver braze. But, many
refrigeration systems I use, have flare fittings.

Christopher A. Young
Learn more about Jesus
www.lds.org
..

"Limp Arbor" wrote in message
...
Was watching and old episode of ATOH the other day and Rich was with
an AC guy in Florida. They were installing AC in a garage. To make
the connections the guy just flared the pipe and tightened them down.

I know on cars brake lines will leak if you don't double-flare them.
Is the pressure in an AC system that much lower that a single-flare
won't leak?

On Feb 7, 8:19*am, Limp Arbor wrote:
Was watching and old episode of ATOH the other day and Rich was with
an AC guy in Florida. *They were installing AC in a garage. *To make
the connections the guy just flared the pipe and tightened them down.

I know on cars brake lines will leak if you don't double-flare them.
Is the pressure in an AC system that much lower that a single-flare
won't leak?

Probably. I'm not sure what typical AC pressures are in a residential
system but I am guessing somewhere in the hundreds of PSI range.
Automotive brake systems can run at 2500 PSI or even more during a
panic stop.

nate

On Feb 7, 5:53*am, N8N wrote:
On Feb 7, 8:19*am, Limp Arbor wrote:

Was watching and old episode of ATOH the other day and Rich was with
an AC guy in Florida. *They were installing AC in a garage. *To make
the connections the guy just flared the pipe and tightened them down.

I know on cars brake lines will leak if you don't double-flare them.
Is the pressure in an AC system that much lower that a single-flare
won't leak?

Probably. *I'm not sure what typical AC pressures are in a residential
system but I am guessing somewhere in the hundreds of PSI range.
Automotive brake systems can run at 2500 PSI or even more during a
panic stop.

nate

Yup

Brake line pressures: 1,000's of psi.
A/C pressures: 100's of psi

short answer: brake lines see ~10x the pressure of A/C lines.

cheers
Bob

cheers
Bob

On 2/7/2012 7:19 AM, Limp Arbor wrote:
Was watching and old episode of ATOH the other day and Rich was with
an AC guy in Florida. They were installing AC in a garage. To make
the connections the guy just flared the pipe and tightened them down.

I know on cars brake lines will leak if you don't double-flare them.
Is the pressure in an AC system that much lower that a single-flare
won't leak?

Brake lines are steel or stainless steel and a lot less ductile than the
copper refrigeration tubing used for air conditioning systems. I'm
assuming the double flare is necessary because the harder material may
crack if a single flare is used and may not be as strong or suitable for
the higher pressures involved in high pressure systems of any type.

TDD

BINGO! Steel brake line will crack with a single flare, it's pretty hard stuff

On 2/7/2012 7:55 PM, wrote:
BINGO! Steel brake line will crack with a single flare, it's pretty hard stuff

It has to be to take the high pressures. I've seen the result of Billy
Bob the trailer mechanic trying to use copper tubing for a brake line. o_O

TDD

On Tue, 07 Feb 2012 21:21:37 -0600, The Daring Dufas
wrote:

On 2/7/2012 7:55 PM, wrote:
BINGO! Steel brake line will crack with a single flare, it's pretty hard stuff

It has to be to take the high pressures. I've seen the result of Billy
Bob the trailer mechanic trying to use copper tubing for a brake line. o_O

TDD

While we're on this subject, the brake line on my mother's car broke
when I applied the brakes Just in front of the left rear tire On a
'58 Ford.

The mechanic told her that it had broken becaues she needed new brake
shoes. There is no truth to that, is there?

On 2/7/2012 11:20 PM, micky wrote:
On Tue, 07 Feb 2012 21:21:37 -0600, The Daring Dufas
wrote:

On 2/7/2012 7:55 PM, wrote:
BINGO! Steel brake line will crack with a single flare, it's pretty hard stuff

It has to be to take the high pressures. I've seen the result of Billy
Bob the trailer mechanic trying to use copper tubing for a brake line. o_O

TDD

While we're on this subject, the brake line on my mother's car broke
when I applied the brakes Just in front of the left rear tire On a
'58 Ford.

The mechanic told her that it had broken becaues she needed new brake
shoes. There is no truth to that, is there?

uh, negative ghostrider.

--
Steve Barker
remove the "not" from my address to email

I don't see any connection. Unless the shoes were slick, not braking, and
you had to push harder on the pedal to make the car stop.

Christopher A. Young
Learn more about Jesus
www.lds.org
..

"micky" wrote in message
...

While we're on this subject, the brake line on my mother's car broke
when I applied the brakes Just in front of the left rear tire On a
'58 Ford.

The mechanic told her that it had broken becaues she needed new brake
shoes. There is no truth to that, is there?

On 2/7/2012 11:20 PM, micky wrote:
On Tue, 07 Feb 2012 21:21:37 -0600, The Daring Dufas
wrote:

On 2/7/2012 7:55 PM, wrote:
BINGO! Steel brake line will crack with a single flare, it's pretty hard stuff

It has to be to take the high pressures. I've seen the result of Billy
Bob the trailer mechanic trying to use copper tubing for a brake line. o_O

TDD

While we're on this subject, the brake line on my mother's car broke
when I applied the brakes Just in front of the left rear tire On a
'58 Ford.

The mechanic told her that it had broken becaues she needed new brake
shoes. There is no truth to that, is there?

I sort of doubt the line broke because the car needed new shoes. I had
the rubber brake line to the rear axle of a 63 Dodge break and I lost
all braking because the older car had a single master brake cylinder.
I was on an uphill lane when it happened so I lived. ^_^

TDD