5 taps on an 20mm MDPE pipe?

[jrote1]

I work at a stables and i'm setting up some taps using 20mm MDPE piping I was wondering if there would be enough water and pressure to power the taps from the main pipe for them to be usable. The taps will just be taken from the MDPE pipe which is buried and will come straight out the ground at a height of about 1.5m with 15mm copper piping. Will this work or will i need to use 25mm MDPE. About a maxium of three tabs will be used at anyone time and the feed will come from the supply to the original tap which is either 15mm or 22mm Copper Pipe more than than likely 15mm.

Thanks In Advance Jake.

 

[WHPES]

If the supply pipe is 15mm it will make no difference using 25mm as opposed to 22mm.

Do not use copper pipe as it will split in winter.

Whether it will work depends on your mains water pressure / flow rate. Does it come out at a good pressure from the main tap?

Is it just to fill buckets for horses / hose them off in summer or do you need it for anything else (eg pressure washer)?

 

[jrote1]

Yeah the pressure from the main tap is fine and the taps will be to fill buckets and troughs and to water the grass with a sprinkler to using a 20mm MDPE pipe will be fine then and the taps will be usable? What shall i use instead of copper for the up pipes? What will the tap pressures be like if i use like 3 at a time?

 

[Destroyer2813]

You can buy 20mm MDPE back plates to screw your taps into straight out the ground into a MDPE backplate then lagged should be fine

 

[jrote1]

I also need to connect the MDPE pipe to a float valve http://www.*************/p/fluidmaster-side-entry-fill-valve/85797 how would i go about this. As I can't find a straight forward bend from MDPE to 1/2" Without a mounting plate?

 

[justlead1]

Hi. Filling buckets via a tap is very time consuming. Why not rig up a cistern with a ballvalve (covered over) so a bucket can be filled in one move. Allowing the cistern to refill at it leisure. With little effect to the residue pressure creating flow at taps.
When lagging the pipes in the situation you describe (a farm). Consider using a length of 150 mm or 225 mm plastic drain pipe at each tap riser as a sleeve for the 20 mm pipe, say 700 mm below up to usage level above. Filling the drain pipe once pipework completed with horse dung will provide a better insulter than than foam lagging as the bacteria generates heat. It does however need topping up from time to time. Tally Ho

 

[jrote1]

Yeah im using the float valve instead of 3 of the taps but how would i directly connect the MDPE pipe the inlet of the float valve? Without using a wall plate?

 

[dontknowitall]

I fitted a piece of copper pipe to an outside tap in the stables 5 years ago and it's never caused problems ... yet. If it can survive the last couple of winters it should be good for a few more years.

 

[jrote1]

Ill just stick to the copper pipe then. Thanks for all your help. 🙂

 

[WHPES]

I spend 1 month ripping out bust copper pipe this year so I disagree. Daft idea outside. MDPE will just blow joints apart which you can soon push and screw back together. Also its quicker to install.

Put an old trough with a fill valve in a convenient place and use that to fill buckets.

 

[jrote1]

How shall i connect the mdpe to the float valve coz i cant find anything that dosent have a wall mount. It would be really helpfull if you found one. Is it usual for MDPE joints to come apart because im burrying them? Thanks In Advance

 

[ecowarm]

Philmac MDPE Pipe Fittings | Female adapter Elbow

 

[AWheating]

are you fitting check valves before taps/ tank?

 

[jrote1]

Im only fitting a shutoff valve at the start of the system is this ok?

 

[AWheating]

i would also fit a double check valve alone with your isolation valve.

 

[jrote1]

Could i ask why you would fit a double check valve?

 

[ecowarm]

If you are fitting cisterns like a cattle trough as long as the float valve is above the spill level of the trough to current regulations you dont need a double check valve

 

[AWheating]

yes but there are 2 taps not off cistern?

you would require one to comply to water regs. for what they cost id fit one either way.

 

[jrote1]

Im confused do i need a double check valve and if i do where do i need to put it?

 

[ecowarm]

If you fit stand pipes with no hoses attached, just to fill buckets then no check valves required

If you fit cisterns/ troughs as justleads post, as long as the float valve is above the spill level as per regs then you dont need to fit check valves