Four inch pipe flap valve

[a1sysman]

Good morning.

Is it possible to purchase four inch pipe flap valves here, north or south? If so, where from please?

TIA

[HotHippo]

Do you mean a non-return valve? Gepaz in Alsancak have a great stock and range of piping equipment, so well worth checking with them.

HH

[a1sysman]

Do you mean a non-return valve? Gepaz in Alsancak have a great stock and range of piping equipment, so well worth checking with them.

HH

Yes, to fit onto four inch waste pipes.

Thanks. I will check out Gepaz.

[benjaminbutton]

Excuse my ignorance, but if you fix non return valves to waste pipes, does that help eliminate pongs.?

[HotHippo]

benjaminbutton, yes, there should be no upstream flow of either waste or vapour if an NRV is fitted.

HH

[thornaby]

Putting a NRV in a 110mm (4") waste pipe if its carrying solids which most do will cause a blockage. Pipes correctly installed with proper vent pipes should not cause an issue. I would think twice before doing this and remember that this sort of valve if available would need access to maintenance.

[mish]

Thornaby.

You put it on the vertical riser well above the flood level of highest discharge coupling (loo etc). Its specifically for venting.
m

[Becker]

Think you mean an air admittance valve, admit air into vent pipe when required.. In UK known as Durgo valves. Don’t live TRNC now but a good start if West would be Ersem Trading or Yapi opposite where cinema is/was in Karaoglanoglu.

[thornaby]

A air admission valve is used for stacks terminating inside a building , a open vent pipe is all that is needed for a external vent pipe.

[Becker]

A air admission valve is used for stacks terminating inside a building , a open vent pipe is all that is needed for a external vent pipe.

Yes I know that but as I understand they’re trying to eliminate external smells.

[thornaby]

Becker hi, that's the problem, we don't really know what the problem is and what are their ideas to resolve it. If its a below ground pipe a n.r.v. is a definite no. If its a ventilation pipe on a external pipe the vent pipe alone if installed correctly is the answer. If its an internal vent pipe a air admivale would be the answer. I would be surprised if houses here had a internal ( in the house) vent pipe but they may exist. One other point is a1syman is looking for a "4" nrv, if it is an external vent pipe the 4" pipe would normally be reduced down to a 2" pipe and extended to a high level. Confusing!

[Becker]

Becker hi, that's the problem, we don't really know what the problem is and what are their ideas to resolve it. If its a below ground pipe a n.r.v. is a definite no. If its a ventilation pipe on a external pipe the vent pipe alone if installed correctly is the answer. If its an internal vent pipe a air admivale would be the answer. I would be surprised if houses here had a internal ( in the house) vent pipe but they may exist. One other point is a1syman is looking for a "4" nrv, if it is an external vent pipe the 4" pipe would normally be reduced down to a 2" pipe and extended to a high level. Confusing!

Yes very.