Check valve woes

On Jul 16, 10:11 pm, RepairNovice <[email protected]> wrote:
> OK this is ridiculous.
>
> I have what I thought was 'standard' ABS black piping from my sump
> pump up about 8 feet and then leaving the house through a basement
> wall.
>
> On recommendation from a sump pump tech guy, I just bought a second
> check valve.
> At the store I asked which of the 4 or 5 models I should buy, the
> clerk said they're all basically the same.
>
> I picked the one that looked most like the one I already had.
>
> The package states:
> Burke Model 350362
> 1 1/4"  x  1 1/2"
> "Union" type check valve.
> Universal fit
>
> I take it home and get ready to do my plumbing job.
> Wouldn't you know it? The damn valve won't fit over the ABS pipe!
>
> I measured the pipe:
> ID:  1 4/8" - 1 5/8",
> OD:  1 7/8"
>
> There is no way the ABS pipe is going to fit into this check valve!
>
> Please let this dummy know what type of check valve I need to buy.  :(
> TIA

Wouldn't the proper thing be to buy an internally threaded one and 2
hose type fittings the size of your tubing.

On Wed, 16 Jul 2008 20:52:24 -0700 (PDT), Eric in North TX
<[email protected]> wrote:
>
>Wouldn't the proper thing be to buy an internally threaded one and 2
>hose type fittings the size of your tubing.


Not sure.
I just know that the existing one is similar in design to the one I
bought, and has rubber fittings at each end that slip on top of the
ABS pipe. Then they are fastened with metal clamps (clips).

On Jul 16, 9:19 pm, RepairNovice <[email protected]> wrote:
> On Wed, 16 Jul 2008 20:52:24 -0700 (PDT), Eric in North TX
>
> <[email protected]> wrote:
>
> >Wouldn't the proper thing be to buy an internally threaded one and 2
> >hose type fittings the size of your tubing.
>
> Not sure.
> I just know that the existing one is similar in design to the one I
> bought, and has rubber fittings at each end that slip on top of the
> ABS pipe. Then they are fastened with metal clamps (clips).

You do have standard size pipe. All pipe sizes are based on the
_internal_ dimension. What you have is a check valve sized for an 1
1/4" (internal) pipe on one and and an 1 1/2" pipe on the other.

You might do some googling to find what size pipe (internal) is for a
given outside diameter - must be a chart somewhere.

Harry K

"Harry K" <[email protected]> wrote in message
news:3fd65c67-c5de-41e5-921a-d9d8a6121b80@w7g2000hsa.googlegroups.com...
On Jul 16, 9:19 pm, RepairNovice <[email protected]> wrote:
> On Wed, 16 Jul 2008 20:52:24 -0700 (PDT), Eric in North TX
>
> <[email protected]> wrote:
>
> >Wouldn't the proper thing be to buy an internally threaded one and 2
> >hose type fittings the size of your tubing.
>
> Not sure.
> I just know that the existing one is similar in design to the one I
> bought, and has rubber fittings at each end that slip on top of the
> ABS pipe. Then they are fastened with metal clamps (clips).

You do have standard size pipe. All pipe sizes are based on the
_internal_ dimension. What you have is a check valve sized for an 1
1/4" (internal) pipe on one and and an 1 1/2" pipe on the other.

You might do some googling to find what size pipe (internal) is for a
given outside diameter - must be a chart somewhere.

Harry K


You do have standard size pipe. All pipe sizes are based on the
_internal_ dimension. What you have is a check valve sized for an 1
1/4" (internal) pipe on one and and an 1 1/2" pipe on the other.

The external size of all pipe stays the same and it is the inside diameter
that changes.

On Jul 17, 8:11 am, "<JOE>" <mailto:[email protected]> wrote:
> "Harry K" <[email protected]> wrote in message
>
> news:3fd65c67-c5de-41e5-921a-d9d8a6121b80@w7g2000hsa.googlegroups.com...
> On Jul 16, 9:19 pm, RepairNovice <[email protected]> wrote:
>
> > On Wed, 16 Jul 2008 20:52:24 -0700 (PDT), Eric in North TX
>
> > <[email protected]> wrote:
>
> > >Wouldn't the proper thing be to buy an internally threaded one and 2
> > >hose type fittings the size of your tubing.
>
> > Not sure.
> > I just know that the existing one is similar in design to the one I
> > bought, and has rubber fittings at each end that slip on top of the
> > ABS pipe. Then they are fastened with metal clamps (clips).
>
> You do have standard size pipe.  All pipe sizes are based on the
> _internal_ dimension.  What you have is a check valve sized for an 1
> 1/4" (internal) pipe on one and and an 1 1/2" pipe on the other.
>
> You might do some googling to find what size pipe (internal) is for a
> given outside diameter - must be a chart somewhere.
>
> Harry K
>
> You do have standard size pipe.  All pipe sizes are based on the
> _internal_ dimension.  What you have is a check valve sized for an 1
> 1/4" (internal) pipe on one and and an 1 1/2" pipe on the other.
>
> The external size of all pipe stays the same and it is the inside diameter
> that changes.

Say what? You are joking, right?

Harry K

"Harry K" <[email protected]> wrote in message
news:18c62d87-e261-4095-8780-268c0107169e@a2g2000prm.googlegroups.com...
On Jul 17, 8:11 am, "<JOE>" <mailto:[email protected]> wrote:
> "Harry K" <[email protected]> wrote in message
>
> news:3fd65c67-c5de-41e5-921a-d9d8a6121b80@w7g2000hsa.googlegroups.com...
> On Jul 16, 9:19 pm, RepairNovice <[email protected]> wrote:
>
> > On Wed, 16 Jul 2008 20:52:24 -0700 (PDT), Eric in North TX
>
> > <[email protected]> wrote:
>
> > >Wouldn't the proper thing be to buy an internally threaded one and 2
> > >hose type fittings the size of your tubing.
>
> > Not sure.
> > I just know that the existing one is similar in design to the one I
> > bought, and has rubber fittings at each end that slip on top of the
> > ABS pipe. Then they are fastened with metal clamps (clips).
>
> You do have standard size pipe. All pipe sizes are based on the
> _internal_ dimension. What you have is a check valve sized for an 1
> 1/4" (internal) pipe on one and and an 1 1/2" pipe on the other.
>
> You might do some googling to find what size pipe (internal) is for a
> given outside diameter - must be a chart somewhere.
>
> Harry K
>
> You do have standard size pipe. All pipe sizes are based on the
> _internal_ dimension. What you have is a check valve sized for an 1
> 1/4" (internal) pipe on one and and an 1 1/2" pipe on the other.
>
> The external size of all pipe stays the same and it is the inside diameter
> that changes.

Say what? You are joking, right?

Harry K
No, he isn't but it can cause confusion and argument because of the way iron
pipe is sized. The nominal sizes of iron pipe are based on the nominal
inside dimensions and schedule 80 pipe is pretty close to the nominal size.
However each size (1/2, 3/4, 1, etc.) has its standard dimension for the
outside since that is the dimension that is threaded for the fittings. If
you get a schedule 40 3/4" pipe it has the same outside dimension as a
schedule 80 or schedule 160 3/4" pipe. The schedule 40 pipe, which is what
is commonly used for plumbing, is thinner wall and larger inside while the
schedule 160 is thicker wall and has a smaller inside dimension.

Don Young