"Bob F" wrote in message
...
Stormin Mormon wrote:
First thing comes to mind, is sunlight and the UV rays. So,
what you use should be UV resistant.

White PVC tubing might work for a while. The cost of
fittings might add up. Typically sold in 10 foot lengths,
and the tubing is relatively rigid.

White PVC will be weakened by UV. Works great buried.


The new "Pex" stuff they sell for indoor water tubing may
work, but not sure how UV resistant it is.

Most Pex is easily damaged by UV.


They also sell some grey tubing for electrical conduit,
which might be more UV resistant, but not sure it's used for
outdoor water.

It's not rated for that.

Which brings us back to black poly pipe.

Ah! Thank you for mentioning it. Given all the other posts where there has
been no mention of black polypipe except for a very early post, but some
other things I've never heard of and UV, I was beginning to wonder if black
polypipe hadn't made it to US.

On 7/1/2011 4:31 AM, FarmI wrote:
"Bob wrote in message
...
Stormin Mormon wrote:
First thing comes to mind, is sunlight and the UV rays. So,
what you use should be UV resistant.

White PVC tubing might work for a while. The cost of
fittings might add up. Typically sold in 10 foot lengths,
and the tubing is relatively rigid.

White PVC will be weakened by UV. Works great buried.


The new "Pex" stuff they sell for indoor water tubing may
work, but not sure how UV resistant it is.

Most Pex is easily damaged by UV.


They also sell some grey tubing for electrical conduit,
which might be more UV resistant, but not sure it's used for
outdoor water.

It's not rated for that.

Which brings us back to black poly pipe.

Ah! Thank you for mentioning it. Given all the other posts where there has
been no mention of black polypipe except for a very early post, but some
other things I've never heard of and UV, I was beginning to wonder if black
polypipe hadn't made it to US.



Back in the late 1950's and early 1960's, 2 inch black poly pipe is what
my father used to get water from our spring's pump house to the
water system at our home on the farm. We had to make sure the buried
pipe was in a bed of sand because 200 yards of plastic pipe will move
when pressurized. On more than one occasion a small stone would rub
a hole into the pipe so we had to dig it up, patch the pipe with a
plastic coupling then rebury it with sand around it. I remember the
pipe as having a fairly thick wall and not being very flexible.

TDD

On Fri, 01 Jul 2011 06:10:11 -0500, The Daring Dufas
wrote:

On 7/1/2011 4:31 AM, FarmI wrote:
"Bob wrote in message
...
Stormin Mormon wrote:
First thing comes to mind, is sunlight and the UV rays. So,
what you use should be UV resistant.

White PVC tubing might work for a while. The cost of
fittings might add up. Typically sold in 10 foot lengths,
and the tubing is relatively rigid.

White PVC will be weakened by UV. Works great buried.


The new "Pex" stuff they sell for indoor water tubing may
work, but not sure how UV resistant it is.

Most Pex is easily damaged by UV.


They also sell some grey tubing for electrical conduit,
which might be more UV resistant, but not sure it's used for
outdoor water.

It's not rated for that.

Which brings us back to black poly pipe.

Ah! Thank you for mentioning it. Given all the other posts where there has
been no mention of black polypipe except for a very early post, but some
other things I've never heard of and UV, I was beginning to wonder if black
polypipe hadn't made it to US.



Back in the late 1950's and early 1960's, 2 inch black poly pipe is what
my father used to get water from our spring's pump house to the
water system at our home on the farm. We had to make sure the buried
pipe was in a bed of sand because 200 yards of plastic pipe will move
when pressurized. On more than one occasion a small stone would rub
a hole into the pipe so we had to dig it up, patch the pipe with a
plastic coupling then rebury it with sand around it. I remember the
pipe as having a fairly thick wall and not being very flexible.

I never heard of buried poly moving from being pressurized... perhaps
your system was prone to air locks, which is easy to eliminate by
installing a simple device that cushions the system. Anyone
installing an irrigation system from their domestic water needs to
install an anti backflow valve or they are looking for big trouble.

On 7/1/2011 11:37 AM, Brooklyn1 wrote:
On Fri, 01 Jul 2011 06:10:11 -0500, The Daring Dufas
wrote:

On 7/1/2011 4:31 AM, FarmI wrote:
"Bob wrote in message
...
Stormin Mormon wrote:
First thing comes to mind, is sunlight and the UV rays. So,
what you use should be UV resistant.

White PVC tubing might work for a while. The cost of
fittings might add up. Typically sold in 10 foot lengths,
and the tubing is relatively rigid.

White PVC will be weakened by UV. Works great buried.


The new "Pex" stuff they sell for indoor water tubing may
work, but not sure how UV resistant it is.

Most Pex is easily damaged by UV.


They also sell some grey tubing for electrical conduit,
which might be more UV resistant, but not sure it's used for
outdoor water.

It's not rated for that.

Which brings us back to black poly pipe.

Ah! Thank you for mentioning it. Given all the other posts where there has
been no mention of black polypipe except for a very early post, but some
other things I've never heard of and UV, I was beginning to wonder if black
polypipe hadn't made it to US.



Back in the late 1950's and early 1960's, 2 inch black poly pipe is what
my father used to get water from our spring's pump house to the
water system at our home on the farm. We had to make sure the buried
pipe was in a bed of sand because 200 yards of plastic pipe will move
when pressurized. On more than one occasion a small stone would rub
a hole into the pipe so we had to dig it up, patch the pipe with a
plastic coupling then rebury it with sand around it. I remember the
pipe as having a fairly thick wall and not being very flexible.

I never heard of buried poly moving from being pressurized... perhaps
your system was prone to air locks, which is easy to eliminate by
installing a simple device that cushions the system. Anyone
installing an irrigation system from their domestic water needs to
install an anti backflow valve or they are looking for big trouble.

Oh it had a check valve at the pump but the pipe went straight for a
distance then down into a gully where the spring was located. No matter
what material a pipe is made of, it's going to move when pressurized.
Pipe will also move with a change in temperature. Look at how metal
pipe is supported in different situations. The longer the pipe the more
movement becomes a problem.

TDD

"The Daring Dufas" wrote in message
...
On 7/1/2011 4:31 AM, FarmI wrote:
"Bob wrote in message
...
Stormin Mormon wrote:
First thing comes to mind, is sunlight and the UV rays. So,
what you use should be UV resistant.

White PVC tubing might work for a while. The cost of
fittings might add up. Typically sold in 10 foot lengths,
and the tubing is relatively rigid.

White PVC will be weakened by UV. Works great buried.


The new "Pex" stuff they sell for indoor water tubing may
work, but not sure how UV resistant it is.

Most Pex is easily damaged by UV.


They also sell some grey tubing for electrical conduit,
which might be more UV resistant, but not sure it's used for
outdoor water.

It's not rated for that.

Which brings us back to black poly pipe.

Ah! Thank you for mentioning it. Given all the other posts where there
has
been no mention of black polypipe except for a very early post, but some
other things I've never heard of and UV, I was beginning to wonder if
black
polypipe hadn't made it to US.



Back in the late 1950's and early 1960's, 2 inch black poly pipe is what
my father used to get water from our spring's pump house to the
water system at our home on the farm. We had to make sure the buried
pipe was in a bed of sand because 200 yards of plastic pipe will move
when pressurized. On more than one occasion a small stone would rub
a hole into the pipe so we had to dig it up, patch the pipe with a plastic
coupling then rebury it with sand around it. I remember the
pipe as having a fairly thick wall and not being very flexible.

That's interesting and different from our experience.

We use 2 inch poly runnin goff the pump on our dam and leading up to the
tank on the hill to gravity feed for the toilets and the garden and it'd be
about 200 yards in distance. It's not buried , must have been there about
20 years by now and we've never had any trouble from it. We dont' ever run
that pump flat out though - just putttering alone at about half speeed
(dont' ask me why because I don't know). The ants use teh poly as an ant
superhighway, but I guess their tracks aren't doing anything much to wear
it. The only trouble we've had with any 2 inch poly was buried and was in
the gravity feed section. It started leaking and had to be dug up and fixed
and then reburied, but I think it might have been a tree root that caused it
to rupture.

I'm a huge fan of polypipe as I can repair most of it myself without ever
having called upon Himself to do it.

On 7/1/2011 9:07 PM, FarmI wrote:
"The Daring wrote in message
...
On 7/1/2011 4:31 AM, FarmI wrote:
"Bob wrote in message
...
Stormin Mormon wrote:
First thing comes to mind, is sunlight and the UV rays. So,
what you use should be UV resistant.

White PVC tubing might work for a while. The cost of
fittings might add up. Typically sold in 10 foot lengths,
and the tubing is relatively rigid.

White PVC will be weakened by UV. Works great buried.


The new "Pex" stuff they sell for indoor water tubing may
work, but not sure how UV resistant it is.

Most Pex is easily damaged by UV.


They also sell some grey tubing for electrical conduit,
which might be more UV resistant, but not sure it's used for
outdoor water.

It's not rated for that.

Which brings us back to black poly pipe.

Ah! Thank you for mentioning it. Given all the other posts where there
has
been no mention of black polypipe except for a very early post, but some
other things I've never heard of and UV, I was beginning to wonder if
black
polypipe hadn't made it to US.



Back in the late 1950's and early 1960's, 2 inch black poly pipe is what
my father used to get water from our spring's pump house to the
water system at our home on the farm. We had to make sure the buried
pipe was in a bed of sand because 200 yards of plastic pipe will move
when pressurized. On more than one occasion a small stone would rub
a hole into the pipe so we had to dig it up, patch the pipe with a plastic
coupling then rebury it with sand around it. I remember the
pipe as having a fairly thick wall and not being very flexible.

That's interesting and different from our experience.

We use 2 inch poly runnin goff the pump on our dam and leading up to the
tank on the hill to gravity feed for the toilets and the garden and it'd be
about 200 yards in distance. It's not buried , must have been there about
20 years by now and we've never had any trouble from it. We dont' ever run
that pump flat out though - just putttering alone at about half speeed
(dont' ask me why because I don't know). The ants use teh poly as an ant
superhighway, but I guess their tracks aren't doing anything much to wear
it. The only trouble we've had with any 2 inch poly was buried and was in
the gravity feed section. It started leaking and had to be dug up and fixed
and then reburied, but I think it might have been a tree root that caused it
to rupture.

I'm a huge fan of polypipe as I can repair most of it myself without ever
having called upon Himself to do it.



My dad never knew I was responsible for leaks in some of the hose that
was coiled up and not installed. It seems that a .22 bullet will travel
a long way so you better know what's behind your targets. ^_^

TDD

On Fri, 1 Jul 2011 19:31:53 +1000, "FarmI" ask@itshall be given
wrote:

"Bob F" wrote in message
...
Stormin Mormon wrote:
First thing comes to mind, is sunlight and the UV rays. So,
what you use should be UV resistant.

White PVC tubing might work for a while. The cost of
fittings might add up. Typically sold in 10 foot lengths,
and the tubing is relatively rigid.

White PVC will be weakened by UV. Works great buried.


The new "Pex" stuff they sell for indoor water tubing may
work, but not sure how UV resistant it is.

Most Pex is easily damaged by UV.


They also sell some grey tubing for electrical conduit,
which might be more UV resistant, but not sure it's used for
outdoor water.

It's not rated for that.

Which brings us back to black poly pipe.

Ah! Thank you for mentioning it. Given all the other posts where there has
been no mention of black polypipe except for a very early post, but some
other things I've never heard of and UV, I was beginning to wonder if black
polypipe hadn't made it to US.

Plenty black poly in the US, used for about every automatic sprinkler
system... but in most all cases it's completely buried so UV is not a
problem.