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Posted by Steve Barker TB on January 31, 2009, 10:18 pm
ker_01 wrote:
> Does anyone know where I can get standard-size, but reverse threaded PVC
> fittings (1/2", 3/4", and 1" size)? I'm adapting a PVC greenhouse design,
> and would need to be able to rotate a series of PVC pipes that cross the
> structure and have that motion tighten them on both ends at the same time-
> so one end would be standard thread, the other end would have to be reverse
> thread.
>
> The alternative is to just glue them all, but then my temporary greenhouse
> becomes a permanet greenhouse...
>
> I checked online, but so far the only reverse-threaded PVC I've been able
> to find is bulkhead fittings, which isn't really what I need.
>
> Thank you for any suggestions or possible sources,
> Keith
Well you could use unions, (expensive) or just pin the slip connections
with 1/4" bolts and wingnuts.
s
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Posted by Doug Houseman on February 1, 2009, 8:19 am
> ker_01 wrote:
> > Does anyone know where I can get standard-size, but reverse threaded PVC
> > fittings (1/2", 3/4", and 1" size)? I'm adapting a PVC greenhouse design,
> > and would need to be able to rotate a series of PVC pipes that cross the
> > structure and have that motion tighten them on both ends at the same time-
> > so one end would be standard thread, the other end would have to be reverse
> > thread.
> >
> > The alternative is to just glue them all, but then my temporary greenhouse
> > becomes a permanet greenhouse...
> >
> > I checked online, but so far the only reverse-threaded PVC I've been able
> > to find is bulkhead fittings, which isn't really what I need.
> >
> > Thank you for any suggestions or possible sources,
> > Keith
>
>
> Well you could use unions, (expensive) or just pin the slip connections
> with 1/4" bolts and wingnuts.
>
> s
You can always slip fit one joint with a long connector. No glue. If it
is in compression - it will not come apart. I do this for my spring hoop
house. It works pretty well.
Doug
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Posted by PeterD on February 1, 2009, 8:50 am
On Sat, 31 Jan 2009 21:18:23 -0600, Steve Barker TB
>ker_01 wrote:
>> Does anyone know where I can get standard-size, but reverse threaded PVC
>> fittings (1/2", 3/4", and 1" size)? I'm adapting a PVC greenhouse design,
>> and would need to be able to rotate a series of PVC pipes that cross the
>> structure and have that motion tighten them on both ends at the same time-
>> so one end would be standard thread, the other end would have to be reverse
>> thread.
>>
>> The alternative is to just glue them all, but then my temporary greenhouse
>> becomes a permanet greenhouse...
>>
>> I checked online, but so far the only reverse-threaded PVC I've been able
>> to find is bulkhead fittings, which isn't really what I need.
>>
>> Thank you for any suggestions or possible sources,
>> Keith
>Well you could use unions, (expensive) or just pin the slip connections
>with 1/4" bolts and wingnuts.
If you are going to pin the slip joints I'd use self tapping screws
instead of bolts. Pre-drill, or use self drilling screws.
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Posted by Cwatters on February 2, 2009, 2:37 pm
> Does anyone know where I can get standard-size, but reverse threaded PVC
> fittings (1/2", 3/4", and 1" size)? I'm adapting a PVC greenhouse design,
> and would need to be able to rotate a series of PVC pipes that cross the
> structure and have that motion tighten them on both ends at the same time-
> so one end would be standard thread, the other end would have to be
> reverse
> thread.
Perhaps you can use turnbuckles and wire as used on boats. Thread it down
the inside of some pipe if you want ti covered..
http://shop.pinbax.com/items/R9030.jpg
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Posted by on February 2, 2009, 2:47 pm
On Feb 2, 2:37=A0pm, "Cwatters"
> > Does anyone know where I can get standard-size, but reverse threaded PV=
C
> > fittings (1/2", 3/4", and 1" size)? I'm adapting a PVC greenhouse desig=
n,
> > and would need to be able to rotate a series of PVC pipes that cross th=
e
> > structure and have that motion tighten them on both ends at the same ti=
me-
> > so one end would be standard thread, the other end would have to be
> > reverse
> > thread.
> Perhaps you can use turnbuckles and wire as used on boats. Thread it down
> the inside of some pipe if you want ti covered..http://shop.pinbax.com/it=
ems/R9030.jpg
I use screws thorugh the fitting if I want to be able to take it apart
later and it does not have to carry water under pressure.
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> fittings (1/2", 3/4", and 1" size)? I'm adapting a PVC greenhouse design,
> and would need to be able to rotate a series of PVC pipes that cross the
> structure and have that motion tighten them on both ends at the same time-
> so one end would be standard thread, the other end would have to be reverse
> thread.
>
> The alternative is to just glue them all, but then my temporary greenhouse
> becomes a permanet greenhouse...
>
> I checked online, but so far the only reverse-threaded PVC I've been able
> to find is bulkhead fittings, which isn't really what I need.
>
> Thank you for any suggestions or possible sources,
> Keith