I was told that one must use different size flexible hose for
different appliances. We're talking propane, and I guess it would be
the same for natural gas. The theory was that a certain appliance,
stove for instance, uses more gas and thus needs a larger hose
(connector size mayber????) than a space heater etc. It seems to me,
as I just bought all the same type and size for everything --- not yet
hooked up--- that it would be the individual orafices in each
appliance that would govern, not the dang hose. Any thoughts?


--
Careful how you respond. I have people!

JC

The Post Quartermaster wrote:
I was told that one must use different size flexible hose for
different appliances. We're talking propane, and I guess it would be
the same for natural gas. The theory was that a certain appliance,
stove for instance, uses more gas and thus needs a larger hose
(connector size mayber????) than a space heater etc. It seems to me,
as I just bought all the same type and size for everything --- not yet
hooked up--- that it would be the individual orafices in each
appliance that would govern, not the dang hose. Any thoughts?

yes. they are right. a particular appliance might need more gas than could
be supplied with a smaller hose. it will say in the instructions what is
required.

On Jul 6, 4:41*pm, "The Post Quartermaster"
wrote:
I was told that one must use different size flexible hose for
different appliances. We're talking propane, and I guess it would be
the same for natural gas. The theory was that a certain appliance,
stove for instance, uses more gas and thus needs a larger hose
(connector size mayber????) than a space heater etc. It seems to me,
as I just bought all the same type and size for everything --- not yet
hooked up--- that it would be the individual orafices in each
appliance that would govern, not the dang hose. Any thoughts?

--
Careful how you respond. I have people!

JC

"I was told that one must use different size flexible hose for
different appliances."

Just curious...

Told by whom?

On 2010-07-06, The Post Quartermaster
wrote:

It seems to me, as I just bought all the same type and size for
everything --- not yet hooked up--- that it would be the individual
orafices in each appliance that would govern, not the dang hose.

That's not how it works--instead the pressure loss accumulates from
all the different parts of the system between the gas regulator and
the appliance. In fact, I believe the flex hose at the end is often a
larger source of pressure loss than the fixed piping leading up to it.
If the total pressure drop is too high, the appliance does not get
enough natural gas and you'll have a problem.

Cheers, Wayne

"DerbyDad03" wrote in message
...
On Jul 6, 4:41 pm, "The Post Quartermaster"
wrote:
I was told that one must use different size flexible hose for
different appliances. We're talking propane, and I guess it would be
the same for natural gas. The theory was that a certain appliance,
stove for instance, uses more gas and thus needs a larger hose
(connector size mayber????) than a space heater etc. It seems to me,
as I just bought all the same type and size for everything --- not
yet
hooked up--- that it would be the individual orafices in each
appliance that would govern, not the dang hose. Any thoughts?

--
Careful how you respond. I have people!

JC

"I was told that one must use different size flexible hose for
different appliances."

Just curious...

Told by whom?

One of those know all types at Home Depot. And don't take that wrong,
I like the depot and Lowe's alright.

"Wayne Whitney" wrote in message
...
On 2010-07-06, The Post Quartermaster
wrote:

It seems to me, as I just bought all the same type and size for
everything --- not yet hooked up--- that it would be the individual
orafices in each appliance that would govern, not the dang hose.

That's not how it works--instead the pressure loss accumulates from
all the different parts of the system between the gas regulator and
the appliance. In fact, I believe the flex hose at the end is often
a
larger source of pressure loss than the fixed piping leading up to
it.
If the total pressure drop is too high, the appliance does not get
enough natural gas and you'll have a problem.

Cheers, Wayne


So, what if I use the largest hose, 5/8ths, on everything. It still
seems like the orafice would be the governing factor. All of the gas
inlet shut-offs require a 5/8ths female connector. I didn't pay any
attention to all the different choices (regarding the opposite end
being of different sizes) so I just bought all 5/8ths. I already had
several of those universal hook-up kits but none of those had the
5/8ths male connectors. So, I guess what I'm now wondering is if you
just use one of the various adapters/reducers etc from the kit to get
down to where you need to be.

tks

I know that's the case for furnace, and water heaters. They have pipe
size requirements. One friend of mine had a Takagi water heater
installed. The installer used 1/2 inch flexible gas line, which didn't
provide enough heat. The book calls for 3/4 or 1 inch pipe. Which
we'll do some day when his finance recovers.

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


"The Post Quartermaster"
wrote in message
...
I was told that one must use different size flexible hose for
different appliances. We're talking propane, and I guess it would be
the same for natural gas. The theory was that a certain appliance,
stove for instance, uses more gas and thus needs a larger hose
(connector size mayber????) than a space heater etc. It seems to me,
as I just bought all the same type and size for everything --- not yet
hooked up--- that it would be the individual orafices in each
appliance that would govern, not the dang hose. Any thoughts?


--
Careful how you respond. I have people!

JC

Furnaces and other appliances have min pipe size for gas, and for
exhaust. It's a real concern.

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


"The Post Quartermaster"
wrote in message
...

One of those know all types at Home Depot. And don't take that wrong,
I like the depot and Lowe's alright.

On 2010-07-06, The Post Quartermaster
wrote:

So, what if I use the largest hose, 5/8ths, on everything.

There's more to the flexible connectors than just the fittings on each
end, there's the diameter and length of the flexible connector itself.

Each flexible connector should have on it a rating in BTU/hr. That is
the maximum demand appliance that connector is good for. So just make
sure that exceeds the input rating of your appliance. As long as that
is true, the size and details of the fittings on each end don't really
matter.

Cheers, Wayne

All of the black pipe coming is reg 3/4 as per the propane company.
The shutoff valves are 3/4 with 5/8 female. I bought all 5/8 flex pipe
to go from the shutoffs to the individual appliances.


"Stormin Mormon" wrote in message
...
I know that's the case for furnace, and water heaters. They have pipe
size requirements. One friend of mine had a Takagi water heater
installed. The installer used 1/2 inch flexible gas line, which
didn't
provide enough heat. The book calls for 3/4 or 1 inch pipe. Which
we'll do some day when his finance recovers.

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


"The Post Quartermaster"
wrote in message
...
I was told that one must use different size flexible hose for
different appliances. We're talking propane, and I guess it would be
the same for natural gas. The theory was that a certain appliance,
stove for instance, uses more gas and thus needs a larger hose
(connector size mayber????) than a space heater etc. It seems to me,
as I just bought all the same type and size for everything --- not
yet
hooked up--- that it would be the individual orafices in each
appliance that would govern, not the dang hose. Any thoughts?


--
Careful how you respond. I have people!

JC

"Wayne Whitney" wrote in message
...
On 2010-07-06, The Post Quartermaster
wrote:

So, what if I use the largest hose, 5/8ths, on everything.

There's more to the flexible connectors than just the fittings on
each
end, there's the diameter and length of the flexible connector
itself.

Each flexible connector should have on it a rating in BTU/hr. That
is
the maximum demand appliance that connector is good for. So just
make
sure that exceeds the input rating of your appliance. As long as
that
is true, the size and details of the fittings on each end don't
really
matter.

Cheers, Wayne

Thanks. That was my feelings exactly. Now I guess I'm hoping we're
both right. G

On Jul 6, 3:41*pm, "The Post Quartermaster"
wrote:
I was told that one must use different size flexible hose for
different appliances. We're talking propane, and I guess it would be
the same for natural gas.

snip

Flow rates are vastly different for the two gasses. For a given BTU
output, the propane unit will have much smaller orifices. From a
practical standpoint, most any connector decently sized for NG will be
more than adequate for propane. You're good to go.

Joe

"Joe" wrote in message
...
On Jul 6, 3:41 pm, "The Post Quartermaster"
wrote:
I was told that one must use different size flexible hose for
different appliances. We're talking propane, and I guess it would be
the same for natural gas.

snip

Flow rates are vastly different for the two gasses. For a given BTU
output, the propane unit will have much smaller orifices. From a
practical standpoint, most any connector decently sized for NG will be
more than adequate for propane. You're good to go.

Joe

Thanks

"The Post Quartermaster" wrote in message
I was told that one must use different size flexible hose for different
appliances. We're talking propane, and I guess it would be the same for
natural gas. The theory was that a certain appliance, stove for instance,
uses more gas and thus needs a larger hose (connector size mayber????) than
a space heater etc. It seems to me, as I just bought all the same type and
size for everything --- not yet hooked up--- that it would be the
individual orafices in each appliance that would govern, not the dang hose.
Any thoughts?


Something interesting I've noticed... Go look at the wall and plumbing in
the rear of many restaurants, or wherever their natural gas meter is. I've
sometimes seen *very* large pipes coming out of the gas meter - like 2" or
so. I guess that would be for the same reasons?

"Wayne Whitney" wrote in message
...
On 2010-07-06, The Post Quartermaster
wrote:

So, what if I use the largest hose, 5/8ths, on everything.

There's more to the flexible connectors than just the fittings on each
end, there's the diameter and length of the flexible connector itself.

Each flexible connector should have on it a rating in BTU/hr. That is
the maximum demand appliance that connector is good for. So just make
sure that exceeds the input rating of your appliance. As long as that
is true, the size and details of the fittings on each end don't really
matter.

Cheers, Wayne

Current flexible stainless steel tubing all come with a label attached to
them that says how much BTU it can pass through the hose, just read the
label and compare with the input requirement of the appliance. No mystery to
it.

"The Post Quartermaster"
wrote in message ...
All of the black pipe coming is reg 3/4 as per the propane company. The
shutoff valves are 3/4 with 5/8 female. I bought all 5/8 flex pipe to go
from the shutoffs to the individual appliances.


Each appliance manufacturer will give a recommended minimum size, based on
consumption. I use propane for cooking. Our old range specified 3/8" line
and that is what we have. When we bought a new range with higher output
burners, the company recommends 1/2". The service guy from the propane
company did the hookup and checked each burner and with everything full on,
it is easily supplied with the existing 3/8" line.

You may need larger than the 5/8 for a large furnace, but most other
appliances will be just fine with it. Worst case scenario is you don't get
the out put and have to replace a line, but I'd bet against it.

"Ed Pawlowski" wrote in message
...

"The Post Quartermaster"
wrote in message
...
All of the black pipe coming is reg 3/4 as per the propane company.
The shutoff valves are 3/4 with 5/8 female. I bought all 5/8 flex
pipe to go from the shutoffs to the individual appliances.


Each appliance manufacturer will give a recommended minimum size,
based on consumption. I use propane for cooking. Our old range
specified 3/8" line and that is what we have. When we bought a new
range with higher output burners, the company recommends 1/2". The
service guy from the propane company did the hookup and checked each
burner and with everything full on, it is easily supplied with the
existing 3/8" line.

You may need larger than the 5/8 for a large furnace, but most other
appliances will be just fine with it. Worst case scenario is you
don't get the out put and have to replace a line, but I'd bet
against it.


Thanks. We're going native and not having a furnace nor central air
conditioning. This a a two story house and I'm not going to heat a
cool a bunch of rooms that nobody is going to be in but maybe once a
week. Just a 220 window unit built in upstairs and one down and a
large space heater upstairs and one down all rated at over 1500 square
feet so we'll see how that works out for awhile.