non-return valve or trap in waste

[hard-work]

The condensate for a boiler. Connecting the condensate pipe to the internal drains, has anyone used a non-return valve rather than a bulky trap? the aim of the trap is to prevent smells entering the room. A non-return valve does exactly the same. The setup is a 40mm McAlpine non-return valve as drain enters the flat. Then a sink waste empties into it. Between the sink waste and non-return valve a tee to the condensate of the boiler. Drain smells do not then enter the flat via the condensate pipe.

Anyone ever done this?

Edit:
I see Wavin do a small in-line 21mm non-return valve, which is not suitable for this application.

 

[Madrab]

No need, the boiler should have a condensate trap that will stop any drain smells entering the room. A non return valve needs periodical cleaning to ensure it doesn't block. Only time another trap may be needed is if a condensate pump is being used.

Connect the condensate to the waste using a pipe clamp CLAMP1 or a V1MX-CO slip tee.

 

[Dan Robinson]

No need, the boiler should have a condensate trap that will stop any drain smells entering the room. A non return valve needs periodical cleaning to ensure it doesn't block. Only time another trap may be needed is if a condensate pump is being used.

Connect the condensate to the waste using a pipe clamp CLAMP1 or a V1MX-CO slip tee.

Depends on the boiler.

 

[dilalio]

Depends on the boiler.

Oi! Get back to work

 

[Madrab]

Depends on the boiler.

Oh right, is there a boiler that doesn't use a water sealed trap for the condensate? Thought they all did now.

 

[Dan Robinson]

Oi! Get back to work

Service time here is measured in epocs.

Oh right, is there a boiler that doesn't use a water sealed trap for the condensate? Thought they all did now.

They all do, but not all traps are created equal. Some aren't sufficient to be connected straight to the waste system.

Oi! Get back to work

Same to you you cheeky sod.

BTW We need to source new taps for the Hampstead thing (lower bath). Trying to organise a bath refurbishment company too.

 

[John D v2.0]

No need, the boiler should have a condensate trap that will stop any drain smells entering the room. A non return valve needs periodical cleaning to ensure it doesn't block. Only time another trap may be needed is if a condensate pump is being used.

Connect the condensate to the waste using a pipe clamp CLAMP1 or a V1MX-CO slip tee.

The boilers trap is primarily to stop the combustion gases leaking from the chamber.
Having said that, you'd only need an additional trap if you have an air break in the drain pipe, for example if it drains into a stand pipe becauser the boiler trap may be too shallow for a stack.

 

[hard-work]

So all is needed is a non-return valve to stop drain stack smells.

 

[Terrywookfit]

Use a HepvO trap.

 

[Madrab]

The boilers trap is primarily to stop the combustion gases leaking from the chamber.

Hmmmm .... of course it is but it can serve a dual purpose when connected directly to the waste.

Some aren't sufficient to be connected straight to the waste system.

Haven't come across one yet that specifies a tundish/air break or can't be directly connected but I haven't installed every type of boiler so need to keep an eye on those MI's

 

[Dan Robinson]

Intergas for one. Ideal Isar, Keston Celsius Suprima HE (I think).

 

[Madrab]

Intergas for one.

See ... need to read the MI's clearly, going to install my first couple of IG's soon and missed the open connection comment.

 

[Dan Robinson]

You can't double trap without an air break. Causes merry hell with ignition faults

 

[hard-work]

Use a HepvO trap.

Why? A non-return valve serves the same function, and cheaper. It also does more than a HepVO trap.

A non-return valve and just having a spigot on the sink does the same as a water trap but stops other flats waste entering your flat.

The McAlpine non-return valve is a DIY job to clean. Far easier than normal water trap.

 

[Dan Robinson]

Why? A non-return valve serves the same function, and cheaper.

Like most of your ideas, they're shyte. How does a one-way valve "do more than a HepVo trap"?

The McAlpine non-return valve is a DIY job to clean. Far easier than normal water trap.

You truly are an idiot.