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.

Check valve or perhaps non-return valve.

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.

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

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

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.

 

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

Do you mean something like this?

What size is the Pipe?

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.

 

 

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. 

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.

 

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

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

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.

 

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.

 

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?

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...