prevent backflow connector

[finind]

remember there is this tube connector (not sure what it is called) that can use to prevent back flow.

afraid when return pump spoilt the main tank water will flow back into the sump thru the pump and cause flooding as my sump is small

any idea where can I get it. thanks

[Eniram]

A cheaper alternative is to drill a small hole at the output pipe. Just below the water line

[tunicate]

It's called 1-way check valve. Below is one of the shops where you can find it.

1st thing 1st, your sump seriously needs sufficient capacity to cater to back flow volume during power outages, 'cause there's no guarantee how tightly a check valve can hold the back flow. (even a small piece of dirt can cause a leak when you needed it most.)

http://www.reefdepot.sg/AddProduct.asp?ProdID=177

[Jameshong]

It's called 1-way check valve. Below is one of the shops where you can find it.

1st thing 1st, your sump seriously needs sufficient capacity to cater to back flow volume during power outages, 'cause there's no guarantee how tightly a check valve can hold the back flow. (even a small piece of dirt can cause a leak when you needed it most.)

http://www.reefdepot....asp?ProdID=177

Can it connected both end by using ehiem hose?

[tunicate]

They're usually designed for PVC pipe fitting. You can prepare a short length of PVC pipe for it. After which, clamp your Eheim hose to the PVC pipe.

[CFOh]

Try to get Y Check Valve, will have better flow rate and lesser trade off with yr flow rate compare to normal check valve... Cheers..

[stmomo]

remember there is this tube connector (not sure what it is called) that can use to prevent back flow.

afraid when return pump spoilt the main tank water will flow back into the sump thru the pump and cause flooding as my sump is small

any idea where can I get it. thanks

Hi Bro, my system is coming with a Y Check Valves.... I got it from N30, my tank maker.... around $35...... exactly the same from Bro CFOh pix.... call him at 96672353.....

[finind]

This problem wont happen for ios tank

[CFOh]

This problem wont happen for ios tank

IOS tank posses own limitation. Check Valve will solve your problem. Cheers..

[tunicate]

Check valve can also be used for IOS setup. This will prevent flooding of skimmer compartment in the IOS. During power outage without the check valve, water level in skimmer compartment may rise beyond recommended level. This may cause skimmate cup to quickly overflow when power returns.

[chercm]

Try to get Y Check Valve, will have better flow rate and lesser trade off with yr flow rate compare to normal check valve... Cheers..

Where to get the one shown ?

[finind]

not easy to find the smaller ones for nano

[CFOh]

not easy to find the smaller ones for nano

What size? or what is yr return pump? Cheers..

[CFOh]

Where to get the one shown ?

Try below bro stomo recommendation... Cheers..

Hi Bro, my system is coming with a Y Check Valves.... I got it from N30, my tank maker.... around $35...... exactly the same from Bro CFOh pix.... call him at 96672353.....

[finind]

What size? or what is yr return pump? Cheers..

actually i prefer to use those transparent pipe

at last can mix and match from the elbow dig out from C328 and aquastar

using the hydor pico 1100l/h .. the 1.5cm transparent tube manage to fix tightly

[CFOh]

actually i prefer to use those transparent pipe

at last can mix and match from the elbow dig out from C328 and aquastar

using the hydor pico 1100l/h .. the 1.5cm transparent tube manage to fix tightly

If it suit your application then is fine... Cheers...

[Jameshong]

Try to get Y Check Valve, will have better flow rate and lesser trade off with yr flow rate compare to normal check valve... Cheers..

For ehiem 1260/1262, what size of Y check valve should I buy?

[CFOh]

For ehiem 1260/1262, what size of Y check valve should I buy?

3/4".. I got one spare let me know if you not able to get it.... Cheers..

[Jameshong]

3/4".. I got one spare let me know if you not able to get it.... Cheers..

Can sell it to me?

[limsc]

A cheaper alternative is to drill a small hole at the output pipe. Just below the water line

I remember reading somewhere one forumer had his check valve failing due to debris trap at the ball.

Thus it isn't fully closed and water still flowing back >> "Murphy's Law".

A back up plan is to do what Eniram suggested. But again if a snail happens to the there, its again back to "Murphy's Law".

[CFOh]

I remember reading somewhere one forumer had his check valve failing due to debris trap at the ball.

Thus it isn't fully closed and water still flowing back >> "Murphy's Law".

A back up plan is to do what Eniram suggested. But again if a snail happens to the there, its again back to "Murphy's Law".

If your return pump water intake properly covered with sponge. objects shld not trap on the ball. If shld be filter on yr intake sponge. And normally routine maintenance required on sponge cleaning. I believe is more to wrong application. Cheers..

[Jameshong]

I remember reading somewhere one forumer had his check valve failing due to debris trap at the ball.

Thus it isn't fully closed and water still flowing back >> "Murphy's Law".

A back up plan is to do what Eniram suggested. But again if a snail happens to the there, its again back to "Murphy's Law".

My tank maker has already done the way Eniram suggestion, but I would like to add onemore for 2nd level safety guard !

[chercm]

if i am using highest diameter ehiem hose i think is 27mm , what size should i use ?