Drain Jetter

[Bloders]

where are you getting the pipe from?
Ours needs a new length of pipe, so any recomednations?

 

[JD6920s]

Built a jetter years ago, still a great tool. You don't need an unloader valve, we have a simple ball valve mounted next to the reel which either sends water back to tank or down the hose. Nozzles need to be made to suit your pump so unless there's a blockage in your nozzle you won't ever over pressure the system.
For overload protection we just fitted a pressure disc which costs a couple of pence but bursts in the event of too much pressure.
Used jetchem for a lot of the stuff and they where always helpful.
if you want to know anything else just ask.

Ste

I’ve seen the discs on a website whilst researching, I wondered what they were for, where do you fit them, in a special housing as a sort of sacrificial end stop?

 

[ste stuart]

What options are there out there for budget jetter setups ? We are starting to see a fair few drains silting up this winter and been on sand only exacerbates this issue. Saw a video on the landy jetter setup, what others are about ?

Can't help you with budget jetters but dad does land drainage and does a lot round Cheshire, I'm sure he'd look after you if you decided to go down the contractor route

 

[JD6920s]

I would disagree, fit an unloader and on smaller pipes you can run a smaller nozzle to keep up the pressure but reduce the flow, you can also use a lance for washdown duties and if you have a restricted or blocked nozzle there is not water pishing everywhere, When I have put them together we use an unloader and a burst disc set up.

So you have built jetters?

 

[ste stuart]

I’ve seen the discs on a website whilst researching, I wondered what they were for, where do you fit them, in a special housing as a sort of sacrificial end stop?

I'm fairly certain I just fitted a t fitting straight off the pump with a pressure disc in one of the outlets

 

[pappuller]

Can't help you with budget jetters but dad does land drainage and does a lot round Cheshire, I'm sure he'd look after you if you decided to go down the contractor route

Thank you, if you could pm me his details that would be appreciated.

 

[shumungus]

Yes and no, would know my way around them as would do a fair bit of washing on our poultry unit and went on a quest to get/make the biggest you could hang onto so learned a lot about systems and pumps to end up with what we have at the minute. Bought 4 built 3.

 

[JD6920s]

You have probably already got this covered, but how is the pump powered? Are you able to reduce the speed to operate at lower flow rates? If you are jetting 4" pipes, the high flow relatively low pressure of your pump will cause a lot of water to come back up the pipe if it is blocked, and you will need a hell of a tank to keep you going for any length of time. To do this you would need smaller nozzle for the lower flow to keep the pressure up to your 70bar.

It’s pto powered.

 

[shumungus]

Will try to take a photo or two tonight to better explain the basics.

 

[shumungus]

What make and size is your pump?

 

[JD6920s]

where are you getting the pipe from?
Ours needs a new length of pipe, so any recomednations?

Still researching, but loads of places on the internet, and depends on whether your Jetter has drive rollers to push the pipe up the drain or powers itself up by water pressure.

 

[JD6920s]

What make and size is your pump?

It’s called an Interpump, it’s a 6 piston horizontally opposed pump we’ve had by us for a while

 

[shumungus]

It’s called an Interpump, it’s a 6 piston horizontally opposed pump we’ve had by us for a while View attachment 862602

Model number?
Pressure and flow?

 

[JD6920s]

Model number?
Pressure and flow?

Not got a model number, but been told by the person who used to build the sprayers it was over spec for what was needed at the time, he says it’s 177 l/min and 1000 psi.

 

[JD6920s]

Making some good headway with the Jetter now, and got to make a decision on the size of the jetter pipe itself, now thinking of 1/2” or 3/4” and up to 200m, but don’t want to buy the wrong one.
I’ve plumbed it up to the reel in 3/4” so have the option but it looks big pipe.
Does anyone know about pressure/flow loss over distance due to friction, and if so which would I best be going for?
Just to recap, the pump is 177 litres/min at a max of 70 bar, I don’t know if I’m better off going larger bore or smaller bore, as I’d always thought if there was x pressure in one end of a pipe there would be the same at the other end, but then I read on Mastenbrouk’s jetter brochure that the 85bar pump gives 15 to 20 bar pressure at the nozzle at 120 litres/min and that has 300m of 3/4” hose.
Any advice very welcome, thanks.

 

[Kidds]

I once tried to irrigate out of a pond using 1/2" pipe, a good pump on the end and hardly any water came out of less than 100m pipe.
Don't use 1/2"

Do you really need 200m? That's a long way.
Wouldn't it be better to dig down every 100m?

 

[milkloss]

Making some good headway with the Jetter now, and got to make a decision on the size of the jetter pipe itself, now thinking of 1/2” or 3/4” and up to 200m, but don’t want to buy the wrong one.
I’ve plumbed it up to the reel in 3/4” so have the option but it looks big pipe.
Does anyone know about pressure/flow loss over distance due to friction, and if so which would I best be going for?
Just to recap, the pump is 177 litres/min at a max of 70 bar, I don’t know if I’m better off going larger bore or smaller bore, as I’d always thought if there was x pressure in one end of a pipe there would be the same at the other end, but then I read on Mastenbrouk’s jetter brochure that the 85bar pump gives 15 to 20 bar pressure at the nozzle at 120 litres/min and that has 300m of 3/4” hose.
Any advice very welcome, thanks.

My thoughts for what they are worth....... which isn't very much!,

you have a lot of flow rather than pressure so I'd go 3/4" no question but that's going to be a heavy pipe and maybe it's going to need a lot of pushing rather than pulling itself.

 

[JD6920s]

It’s not hydraulic hose I’m looking at, it’s proper jetting hose, much lighter that hydraulic, and known as Thermoplastic hose.

ID (inch)​ OD (mm)​ Working Pressure (bar/psi)​ Burst Pressure (bar/psi)​ Weight (kg/mt)​ Bend Radius (mm)​ Lengths (mt)​ Ralco Part​ 1/2​ 20.6​ 200 / 2900​ 500 / 7250​ 0.23​ 100​ 100​ AC180-013100​ 1/2​ 20.6​ 200 / 2900​ 500 / 7250​ 0.23​ 100​ 120​ AC180-013120​ 3/4​ 28.6​ 200 / 2900​ 500 / 7250​ 0.37​ 125​ 100​ AC180-019100​ 3/4​ 28.6​ 200 / 2900​ 500 / 7250​ 0.37​ 125​ 120​ AC180-019120​ 1"​ 36.6​ 200 / 2900​ 500 / 7250​ 0.59​ 150​ 100​ AC180-025100​ 1"​ 36.6​ 200 / 2900​ 500 / 7250​ 0.59​ 150​ 120​ AC180-025120​ 11/4​ 46​ 200 / 2900​ 500 / 7250​ 0.89​ 225​ 100​ AC180-032100​ 11/4​ 46​ 200 / 2900​ 500 / 7250​ 0.89​ 225​ 120​ AC180-032120​ We reserve the right to change all technical data without prior notice.​

 

[milkloss]

It’s not hydraulic hose I’m looking at, it’s proper jetting hose, much lighter that hydraulic, and known as Thermoplastic hose.

​

​ ID (inch)​ OD (mm)​ Working Pressure (bar/psi)​ Burst Pressure (bar/psi)​ Weight (kg/mt)​ Bend Radius (mm)​ Lengths (mt)​ Ralco Part​ 1/2​ 20.6​ 200 / 2900​ 500 / 7250​ 0.23​ 100​ 100​ AC180-013100​ 1/2​ 20.6​ 200 / 2900​ 500 / 7250​ 0.23​ 100​ 120​ AC180-013120​ 3/4​ 28.6​ 200 / 2900​ 500 / 7250​ 0.37​ 125​ 100​ AC180-019100​ 3/4​ 28.6​ 200 / 2900​ 500 / 7250​ 0.37​ 125​ 120​ AC180-019120​ 1"​ 36.6​ 200 / 2900​ 500 / 7250​ 0.59​ 150​ 100​ AC180-025100​ 1"​ 36.6​ 200 / 2900​ 500 / 7250​ 0.59​ 150​ 120​ AC180-025120​ 11/4​ 46​ 200 / 2900​ 500 / 7250​ 0.89​ 225​ 100​ AC180-032100​ 11/4​ 46​ 200 / 2900​ 500 / 7250​ 0.89​ 225​ 120​ AC180-032120​ We reserve the right to change all technical data without prior notice.​

200m of 3/4" will have 56kg of water in it alone........ I think..... prepared to be proven wrong. But could be a fair amount of friction.

 

[JD6920s]

200m of 3/4" will have 56kg of water in it alone........ I think..... prepared to be proven wrong. But could be a fair amount of friction.

But, am I right in saying that as long as the pipe has water running back from the jetting nozzle this will assist in equalising the weight of the water in the pipe, therefore only having the weight of the pipe itself to pull?
not sure, just saying. ?