Snake / Rat stoppers.

[NE1]

Any body know what the spring loaded pipe ends are called for allowing water out , but closes when water pressure drops , so creatures cannot enter.

Edited November 18, 2022 by NE1

[Etaoin Shrdlu]

Check valve or perhaps non-return valve.

Edited November 18, 2022 by Etaoin Shrdlu

[NE1]

6 minutes ago, Etaoin Shrdlu said:

Check valve or perhaps non-return valve.

I have been trying to find them on Lazada or Homepro , but it doesn't matter what I type in , non appears.

[Etaoin Shrdlu]

7 minutes ago, NE1 said:

I have been trying to find them on Lazada or Homepro , but it doesn't matter what I type in , non appears.

I don't know if mainstream consumer shops like Homepro or online merchants would carry something like this. I think you might need a specialty plumbing company. I see that some swimming pool suppliers and marine supply shops have some types of non-return valves, but these might not be the answer if you're just looking to prevent rats and snakes getting into a PVC drain pipe.

 

https://swimmingpoolsthailand.com/en/232-check-valves-non-return-valves

 

https://asap-marine.com/en/non-return-check-valves

[KannikaP]

Try fixing a piece of nylon netting over the end of the pipe. 

[NE1]

1 minute ago, KannikaP said:

Try fixing a piece of nylon netting over the end of the pipe. 

That doesnt work , as there is tree debris to contend with.

 

[NE1]

Looks something like this , but the one I am after just slots over existing pipe.

[jvs]

Do you mean something like this?

[MJCM]

What size is the Pipe?

[MJCM]

If the pipe size is not too big (1" approx) you can use one of these

 

These are the swing types. You also have spring ones but they need a pump

 

Any local hardware store should have these

 

If water stops flowing, they shut tight.

 

 

[Mickeymaus]

If you make this outlet higher above the ground it will not do the same? You can put something around the pipe end that blocks visitors. 

[NE1]

7 minutes ago, jvs said:

Do you mean something like this?

No , similar to the picture I posted.

 

2 minutes ago, MJCM said:

If the pipe size is not too big (1" approx) you can use one of these

 

 

 

 

It's a 2 inch.

 

[MJCM]

3 minutes ago, NE1 said:

 

It's a 2 inch.

 

Not sure if they have them in that size. Sorry

 

We have them installed in sizes up to 1 1/2" so maybe ???????

 

Edit: Is there a lot of water flow??

 

If not then you could always change the size of the pipe at the end to 1 1/2" and install one of those. Just a suggestion of course

Edited November 18, 2022 by MJCM

[Mickeymaus]

An other idea. Perhaps you can build a kind of siphone. 

[farmerjo]

On 11/18/2022 at 4:12 PM, NE1 said:

Any body know what the spring loaded pipe ends are called for allowing water out , but closes when water pressure drops , so creatures cannot enter.

If you google drain pipe flapper it comes up with a few types.

 

If you have handy man skills just buy a foot valve(available everywhere) and lighten the spring.

 

Edited November 20, 2022 by farmerjo

[Encid]

You are looking for a PVC flap valve... not sure what you call them in Thai.

 

This one is not spring loaded, it just relies on gravity after the drain water has exited.

 

[unheard]

1 hour ago, Encid said:

This one is not spring loaded, it just relies on gravity after the drain water has exited.

 

Available for purchase in Thailand?

[Encid]

53 minutes ago, unheard said:

Available for purchase in Thailand?

Yes.

I've seen them often in ads on FB... but I couldn't find them doing a search.

Blue PVC, same as most Thai PVC domestic water fittings.

I wish that I'd kept a copy...