Water pump too strong, any pressure reducing devices?

[KhunBENQ]

A mate moved here in a newly built house.

Single story house, tank and pump.

Against all advice he bought a much too powerful pump (300 W?).

Too much pressure on the outlets.

Any affordable solution to reduce pressure?

[carlyai]

5 minutes ago, KhunBENQ said:

A mate moved here in a newly built house.

Single story house, tank and pump.

Against all advice he bought a much too powerful pump (300 W?).

Too much pressure on the outlets.

Any affordable solution to reduce pressure?

Could try a different pressure switch. If the current one turns off at say 14psi (the on/off psi is written on the pressure switch). Then buy one for a 200 w pump. 

I've never tried this so not advising from experience.

 

[VocalNeal]

Turn on the worst tap/faucet and slowly turn off the main water pump outlet valve until the flow/pressure is satisfactory. He'd have to go down to a 155W unit to make an appreciable difference and that would reduce his potential max flow by about 1/3. 

 

A 1" brass reducing valve is about 550 Baht-ish. Go bigger and they get expensive quickly.

[sammieuk1]

On the bright side or sunny side in this case you could blow more off with his bum gun ???? 

[keith101]

Close the outlet valve down on the tank to reduce the flow until the pressure you want is achieved . I have a 350 from the tank for when the outside water gets shut off(often) and the pressure is great .

[Artisi]

Buy an adjustable pressure regulating valve and fit it at a convenient place after the pump discharge. 

[jaideedave]

3 minutes ago, Artisi said:

Buy an adjustable pressure regulating valve and fit it at a convenient place after the pump discharge. 

Industry normally uses two types of valves.Gate valves to shut off flow and globe valves to regulate flow.

keith101...says to try this 1st.

"Close the outlet valve down on the tank (outlet) to reduce the flow until the pressure you want is achieved"

I tend to agree.

A regulating valve should be the globe variety but I doubt many pepes will know what you are talking about.

[ExpatOilWorker]

Look around the 9 minute mark.

 

 

[jaideedave]

1 hour ago, KhunBENQ said:

A mate moved here in a newly built house.

Single story house, tank and pump.

Against all advice he bought a much too powerful pump (300 W?).

Too much pressure on the outlets.

Any affordable solution to reduce pressure?

I think the pressure the pump produces is pre set at the factory. I can't say if there is an adjustment on these.Maybe some subs here will know.

I don't believe it's related to the flow..325 vs 150 (volume) liters per minute or?

[Artisi]

10 minutes ago, jaideedave said:

Industry normally uses two types of valves.Gate valves to shut off flow and globe valves to regulate flow.

keith101...says to try this 1st.

"Close the outlet valve down on the tank (outlet) to reduce the flow until the pressure you want is achieved"

I tend to agree.

A regulating valve should be the globe variety but I doubt many pepes will know what you are talking about.

[jaideedave]

6 minutes ago, ExpatOilWorker said:

Look around the 9 minute mark.

 

 

I learned something today,retired HSE..off/on shore.

After we lived in our house for over 12 years the water pump failed and the solution was to replace it.

The fellow with the high pressure can try the adjustments on the video.Very good info. 

 

[lopburi3]

I can not believe - perhaps some tap is too strong (bum gun) but can not believe any 300w water pump is even providing close to normal city water pressure in western countries.  If a tap just partly closing can solve the issue.

[KhunBENQ]

Thanks so far for the contributions. Unfortunately I am currently handicapped to drive there and check on my own whether it really creates a problem.

Got it through a video call.

[KhunBENQ]

46 minutes ago, jaideedave said:

The fellow with the high pressure can try the adjustments on the video.Very good info. 

The video shows a pump like I have with a pressure tank. But the guy has one without going into the house. Also not what I would have recommended.

[lopburi3]

It might be the newly built (and joints not properly made) so getting leaks?  That would be a construction issue if any recourse but as people have said most pumps are adjustment for pressure and pump person could do that.  If taps splashing too much perhaps change to those that have filters.  Hard to know what the issue is because pump pressure is not normally that high.

[jaideedave]

12 hours ago, KhunBENQ said:

The video shows a pump like I have with a pressure tank. But the guy has one without going into the house. Also not what I would have recommended.

I have seen these pressure tanks in hardware shops but really don't know much about them.Our 2 br 2 bath house/garden runs perfectly fine with a standard Mitsubishi 225 W pump.Simple and effective. 

[VocalNeal]

16 hours ago, jaideedave said:

A regulating valve should be the globe variety but I doubt many pepes will know what you are talking about.

Depends on the fluid and to some extent the industry.

 

Plug

Diaphragm

Ball

Globe

Eccentric disc

Eccentric plug

Et al.

 

[Artisi]

2 minutes ago, VocalNeal said:

Depends on the fluid and to some extent the industry.

 

Plug

Diaphragm

Ball

Globe

Eccentric disc

Eccentric plug

Et al.

 

Butterfly

pressure regulating

Non-return 

check 

safety 

pinch 

by-pass 

needle 

relief

[VocalNeal]

9 minutes ago, Artisi said:

Butterfly

pressure regulating

Non-return 

check 

safety 

pinch 

by-pass 

needle 

relief

Butterfly not used much anymore because of the forces on the disk. OK for manual on/off use

Pinch is a kind of diaphragm valve

 

All the rest are duty/service not type.

 

Quote

but I doubt many pepes will know what you are talking about.

I get paid for knowing. Well, OK, used to. 

[MrJ2U]

18 hours ago, KhunBENQ said:

too powerful pump (300 W?).

For a household use like showering and sinks that's rather tame.

 

There shouldn't be any problems whatsoever.

 

Weve got a 950 Mitsubishi Superpump for household use.  No problems at all. 

[vinci]

turn down the pressure switch

[carlyai]

13 minutes ago, vinci said:

turn down the pressure switch

It's a bit dangerous doing this. I think the lever spring of the relay is 'live'.

So if you want to adjust the pressure switch use an insulated screwdriver and don't get your sweaty hands on the switch.

Better to buy a new, lower pressure pressure switch.

(My suggestion was the best) :)

[Encid]

There are 1" PVC valves that are used to regulate the water flow rate for drip irrigation systems that might work for you... relatively inexpensive too.

 

[sandyf]

On 7/20/2023 at 6:58 PM, KhunBENQ said:

The video shows a pump like I have with a pressure tank. But the guy has one without going into the house. Also not what I would have recommended.

That sounds like a constant pressure pump and he shouldn't really mess with it.

I just fitted one recently when my old one sprung a leak on the tank. The new pump gave a higher pressure which was a great improvement to the showers and for the wash basins etc I just partially closed the on/off valves underneath each outlet in the bathrooms, the kitchen was ok.

[billd766]

On 7/20/2023 at 4:00 PM, KhunBENQ said:

A mate moved here in a newly built house.

Single story house, tank and pump.

Against all advice he bought a much too powerful pump (300 W?).

Too much pressure on the outlets.

Any affordable solution to reduce pressure?

I have a Mitsubishi 305ER but that covers the 2 floors of the house and my MIL old house/kitchen.

 

I put a 1 inch valve on each side of the pump and the pump O/P can be regulated by the O/P valve.

 

It has a bonus of being able to easily remove and replace the water pump should I need to.

[billd766]

On 7/20/2023 at 6:49 PM, KhunBENQ said:

Thanks so far for the contributions. Unfortunately I am currently handicapped to drive there and check on my own whether it really creates a problem.

Got it through a video call.

quote "Unfortunately I am currently handicapped to drive there".

 

Now that feeling I know very well lately. Mostly all I can do now is sit, watch and give advice.

 

It is incredibly frustrating seeing somebody do the work that I used to do easily, plus waiting for somebody to turn up to actually do the work.

[KhunBENQ]

35 minutes ago, billd766 said:

Mostly all I can do now is sit, watch and give advice.

My situation even worsened today. So no chance to visit the mate. Can take weeks.

Thanks anyway for the tips.

[billd766]

3 hours ago, billd766 said:

I have a Mitsubishi 305ER but that covers the 2 floors of the house and my MIL old house/kitchen.

 

I put a 1 inch valve on each side of the pump and the pump O/P can be regulated by the O/P valve.

 

It has a bonus of being able to easily remove and replace the water pump should I need to.

I will try to get out there tomorrow and take a couple of photos.

 

I also put my water pump on a metal table ro get easier access to it and save bending down all the time. It is bad for my back also.

[carlyai]

6 hours ago, billd766 said:

I will try to get out there tomorrow and take a couple of photos.

 

I also put my water pump on a metal table ro get easier access to it and save bending down all the time. It is bad for my back also.

@Billcould try some Celebrex (antiinflamatory) for your back. :)

[Artisi]

12 minutes ago, carlyai said:

@Billcould try some Celebrex (antiinflamatory) for your back. ????

Or Diclofenac, muscle relaxant - also ideal prior to any major dental work like an extraction..