Bulkhead joinery
 

A few bulkhead questions.

If I have a 1" bulkhead, will standard 1" PVC pipe slip fit the bulkhead? I
gather it will, as the elbow gizmo that came with the bulkhead fits inside
my PVC elbows. Although the bulkhead elbow fits the bulhead rather loosely.

Do I use standard PVC glue to join them or will Silicone do?

On Wed, 4 May 2005 21:03:54 -0400, "Bill Stock"
wrote:

===A few bulkhead questions.
===
===If I have a 1" bulkhead, will standard 1" PVC pipe slip fit the bulkhead? I
===gather it will, as the elbow gizmo that came with the bulkhead fits inside
===my PVC elbows. Although the bulkhead elbow fits the bulhead rather loosely.
===
===Do I use standard PVC glue to join them or will Silicone do?
===


Is the elbow gizmo that came with the bulkhead fitting a street type
ell or regular ell? Street ells fit inside a common standard socket
type joint...If its a 1" bulkhead and made for use with PVC pipe and
not flexible tube etc, then it should fit. I would use PVC cement if
it is PVC bulkhead fitting and your installing PVC pipe into it.
Silicone is not the greatest when there is a solvent cement made for
that materials specific properties.

==============================================
Put some color in your cheeks...garden naked!

The bulkheads that I stock and use have standard pipe thread and I use
threaded nipples to connect to them - no chance for a leak as it's threads
fit tightly - no glue or silicone
Gale :~)
A few bulkhead questions.

If I have a 1" bulkhead, will standard 1" PVC pipe slip fit the bulkhead?
I
gather it will, as the elbow gizmo that came with the bulkhead fits inside
my PVC elbows. Although the bulkhead elbow fits the bulhead rather
loosely.

Do I use standard PVC glue to join them or will Silicone do?

"~Roy~" wrote in message
...
On Wed, 4 May 2005 21:03:54 -0400, "Bill Stock"
wrote:

===A few bulkhead questions.
===
===If I have a 1" bulkhead, will standard 1" PVC pipe slip fit the
bulkhead? I
===gather it will, as the elbow gizmo that came with the bulkhead fits
inside
===my PVC elbows. Although the bulkhead elbow fits the bulhead rather
loosely.
===
===Do I use standard PVC glue to join them or will Silicone do?
===


Is the elbow gizmo that came with the bulkhead fitting a street type
ell or regular ell? Street ells fit inside a common standard socket
type joint...If its a 1" bulkhead and made for use with PVC pipe and
not flexible tube etc, then it should fit. I would use PVC cement if
it is PVC bulkhead fitting and your installing PVC pipe into it.
Silicone is not the greatest when there is a solvent cement made for
that materials specific properties.

This is the part he

http://www.mops.ca/cgi-bin/SoftCart....9e4+1115258028

Apparently it is PVC, so the PVC glue should do the trick.

Thanks Roy.


==============================================
Put some color in your cheeks...garden naked!

Bill.....
After looking at the bulkhead fitting you have, it may or may not be
made to the diameter of the standard size of PVC pipe. I see they
supply trheir own elbow fitting that fits inside the bulkhead fitting
and adapts to a hose connection barb. Sometimes these will be
sufficiently close enough in the indise diameter to utilize standard
PVC pipe, sometimes not, and this is why your piece of PVC pipe has a
bit of play. I think that PVC cement will do the job, if the play is
not really very sloppy. Are you intending to use the supplied adapter
ell or regular PVC pipe? Whichever you choose, just coat both pieces
well and allow to set a bit longer than normal so the glue has more
chance to swellup the PVC material and make a better joint if there is
any small space, it should swellup and make a seal. Thats one reason
typical PVC sockets are not actually the same inside diameter at the
bottom of the socket as it is at the top, as it gives a bit of PVC
material to exude backwards and make a closer fit with the exuded
material I have sucessfully glued joints that were real sloppy and
they held fine.....

Regards

Roy

On Wed, 4 May 2005 21:35:19 -0400, "Bill Stock"
wrote:

===
==="~Roy~" wrote in message
. net...
=== On Wed, 4 May 2005 21:03:54 -0400, "Bill Stock"
=== wrote:
===
======A few bulkhead questions.
======
======If I have a 1" bulkhead, will standard 1" PVC pipe slip fit the
===bulkhead? I
======gather it will, as the elbow gizmo that came with the bulkhead fits
===inside
======my PVC elbows. Although the bulkhead elbow fits the bulhead rather
===loosely.
======
======Do I use standard PVC glue to join them or will Silicone do?
======
===
===
=== Is the elbow gizmo that came with the bulkhead fitting a street type
=== ell or regular ell? Street ells fit inside a common standard socket
=== type joint...If its a 1" bulkhead and made for use with PVC pipe and
=== not flexible tube etc, then it should fit. I would use PVC cement if
=== it is PVC bulkhead fitting and your installing PVC pipe into it.
=== Silicone is not the greatest when there is a solvent cement made for
=== that materials specific properties.
===
===This is the part he
===
===http://www.mops.ca/cgi-bin/SoftCart....9e4+1115258028
===
===Apparently it is PVC, so the PVC glue should do the trick.
===
===Thanks Roy.
===
===
=== ==============================================
=== Put some color in your cheeks...garden naked!
===


==============================================
Put some color in your cheeks...garden naked!

After looking at the bulkhead fitting you have, it may or may not be
made to the diameter of the standard size of PVC pipe.

Hi Roy, Bill - Don't all bulkhead fittings come threaded so they will make a
watertight seal with whatever type of fitting you choose (hose barb, elbow
etc) I have never seen the type you guys are talking about
On second thought, why wouldn't you use one that is threaded for
connections instead of relying on cement or silicone to make them
watertight? - a 1" bulkhead fitting is only ~$7 Can
JMO Gale :~)

I have seen them that were able to be used for a socket joint, or a
thread joint......I do not know what kind of threads the one that Bill
has it may not be a pipe thread at all and perhaps just imperial
threads or metric straight threads which would not match pipe threads.
I have a feeling it may be non pipe threads as it references aquarium
use. The BH fittings that are sold at West marine, and the local
plumbing supply here in town vary in style. Some have external pipe
threads and some have internal pipe threads, and some are socket, and
a few even have external and internal pipe threads......Some even have
pipe threads and hose barb on the same BH fitting........so I guess it
would be safe to assume a BH fitting can be any number of
variations.....

On Thu, 5 May 2005 13:10:52 -0400, "Gale Pearce"
wrote:

===
=== After looking at the bulkhead fitting you have, it may or may not be
=== made to the diameter of the standard size of PVC pipe.
===
===Hi Roy, Bill - Don't all bulkhead fittings come threaded so they will make a
===watertight seal with whatever type of fitting you choose (hose barb, elbow
===etc) I have never seen the type you guys are talking about
=== On second thought, why wouldn't you use one that is threaded for
===connections instead of relying on cement or silicone to make them
===watertight? - a 1" bulkhead fitting is only ~$7 Can
=== JMO Gale :~)
===


==============================================
Put some color in your cheeks...garden naked!

"Gale Pearce" wrote in message
...
The bulkheads that I stock and use have standard pipe thread and I use
threaded nipples to connect to them - no chance for a leak as it's threads
fit tightly - no glue or silicone
Gale :~)
A few bulkhead questions.

If I have a 1" bulkhead, will standard 1" PVC pipe slip fit the bulkhead?
I
gather it will, as the elbow gizmo that came with the bulkhead fits
inside
my PVC elbows. Although the bulkhead elbow fits the bulhead rather
loosely.

Do I use standard PVC glue to join them or will Silicone do?



The fittings I have are slip fittings or socket fittings as Roy calls them.
I intend to install two in my flowerpot Skippy filter. One at the bottom to
attach to my PVC pipe for making the vortex and one at the top for my return
to the waterfall. They both come with hose barbs (elbow) for attaching
flexible pipe. I have a third fitting that is threaded, which I'm
considering installing at the bottom as a drain plug for back washing.

Although I see a serious potential for overflow with this design. Since my
inflow and out flow are the same size. I'll have to come up with a better
design for my return flow.

"~Roy~" wrote in message
...
Bill.....
After looking at the bulkhead fitting you have, it may or may not be
made to the diameter of the standard size of PVC pipe. I see they
supply trheir own elbow fitting that fits inside the bulkhead fitting
and adapts to a hose connection barb. Sometimes these will be
sufficiently close enough in the indise diameter to utilize standard
PVC pipe, sometimes not, and this is why your piece of PVC pipe has a
bit of play. I think that PVC cement will do the job, if the play is
not really very sloppy. Are you intending to use the supplied adapter
ell or regular PVC pipe? Whichever you choose, just coat both pieces
well and allow to set a bit longer than normal so the glue has more
chance to swellup the PVC material and make a better joint if there is
any small space, it should swellup and make a seal. Thats one reason
typical PVC sockets are not actually the same inside diameter at the
bottom of the socket as it is at the top, as it gives a bit of PVC
material to exude backwards and make a closer fit with the exuded
material I have sucessfully glued joints that were real sloppy and
they held fine.....

Regards

Roy

I plan to use the barb on the outside of the filter and PVC on the inside of
the filter (flowerpot). The bulkhead is socketed on both sides.

On Thu, 5 May 2005 19:28:57 -0400, "Bill Stock" wrote:
Snip
The bulkhead is socketed on both sides.
Snip

And yet another version of a BH fitting, socketed on both sides..never
seen em that way.......

Thanks

Roy



==============================================
Put some color in your cheeks...garden naked!

Although I see a serious potential for overflow with this design. Since my
inflow and out flow are the same size. I'll have to come up with a better
design for my return flow.

I am going to comment to both Roy and Bill in 1 message here - The BH's I
use are threaded on both the outside (to tighten fitting to vessel it is
installed in) and inside to accept whatever fitting(s) you use

I use a larger *outflow* BH than for *inflow* - a 2" BH will handle up to
~ 2000 gph , although more than ~1200 gph is pushing the envelope for bio-
filtration in a 45 gal barrel
Gale :~)

"Gale Pearce" wrote in message
...

Although I see a serious potential for overflow with this design. Since
my
inflow and out flow are the same size. I'll have to come up with a better
design for my return flow.

I am going to comment to both Roy and Bill in 1 message here - The BH's I
use are threaded on both the outside (to tighten fitting to vessel it is
installed in) and inside to accept whatever fitting(s) you use

I use a larger *outflow* BH than for *inflow* - a 2" BH will handle up
to
~ 2000 gph , although more than ~1200 gph is pushing the envelope for bio-
filtration in a 45 gal barrel
Gale :~)


So a 1" BH would only give me 500 gph?

For whatever reason this never showed up , so I am going to try sending
again
Gale :~)

I use a larger *outflow* BH than for *inflow* - a 2" BH will handle up
to
~ 2000 gph , although more than ~1200 gph is pushing the envelope for bio-
filtration in a 45 gal barrel
Gale :~)


So a 1" BH would only give me 500 gph?

That's probably close but I have never actually tested that - I use a 2"
bulkhead and 2" threaded hose barb nipple for the return line and a 1" or
1.5" bulkhead for the inflow line with the appropriate size threaded hose
barb nipple for the line from the pump. You can always use 2 return lines
instead of 1, but I have always used one 2" BH for the return
Gale :~)