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low flow

Baseflow (also called drought flow, groundwater recession flow, low flow, low-water flow, low-water discharge and sustained or fair-weather runoff) is the portion of the streamflow that is sustained between precipitation events, fed to streams by delayed pathways. It should not be confused with groundwater flow. Fair weather flow is also called base flow.

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  1. U

    Low flow rate (5L/min) at electric shower, 30L/min at stopcock

    Hello, I have quite low flow rate for my electric shower (a piddling 5L/min), and would like some tips or advice about how to solve or find the cause. I would like a flow rate of about 12L/min. Here is my set-up: Standard gas boiler (not a combi) in the kitchen, have cold water tanks in the...
  2. T

    Hot water low flow

    good morning I’ve got a triple shower valve. The cold flow is fine, but There’s just no pressure of flow from the hot. looking at the valve the silver part is stopping the valve rotate any more left which is the way for hot. is that why I don’t have much hot? the kitchen taps are fine...
  3. K

    Glow worm Ultimate 35c low flow rate

    Hello, I have a glow wrom ultimate 35c combi boiler which has terrible flow rate. Flow rate used to be strong but one day around 2 weeks ago it just slowed to almost a dribble. To date i have replaced the flow rate sensor, the pressure sensor, I have replaced the springs inside the diverter...
  4. G

    Vaillant ecoTEC Plus 938 - Low Flow Rate

    Hi guys. Hope you are able to help me, and thank you in advance for anyone who can contribute. I've got a Vaillant 938 and notice that the hot water output isn't near the claimed flow. I've tested the pressure at the stopcock and it's around 3 bar. I've tested the cold flow rate from the...
    • gary333
    • Thread
    • america ecotec ecotec plus flow flow rate low flow plus usa vaillant
    • Replies: 36
    • Forum: USA
  5. V

    New circulating pump. Low flow

    Hi guys. I live in a bungalow with 14 radiators. Closed loop heating system The heating is zoned so that individual areas or hot water can be independently heated. All radiators and heating cylinder are at ground level. My boiler is 7 meters away from the house in the garden. 11 meters...
    • vdcfx1
    • Thread
    • america circulating flow low flow new pump usa
    • Replies: 17
    • Forum: USA
  6. L

    low flow rate, undecided on options.

    Hi I have an old property with a Low flow rate coming in from Mains. Old black imperial pipe from a long run. This is not a simple job to replace so looking for other options. It currently has 5 bar on standing but drops off as soon as one tap or shower is used. <1 bar. The property is being...
  7. J

    Low flow rate in outside and mains cold tap only. Mains pressure combi system

    Hi, We have been in our house for just over two years, we have always had low pressure in our downstairs cold tap (mixer tap), hot is fine, and also in our outside tap, this branches off the main cold line before it hits the cold side of the tap. (please see images, cold is the right side...
  8. S

    Radiator pipe issue low flow

    Hi Im hoping someone can help me with the below. I have 3 radiators in my new house which don't get any heat. After doing all the usual stuff to try and resolve it I removed them and noticed the flow is low to them all. I then took one of the radiators off where they get heat and could really...
  9. E

    Hot water tap in kitchen has low flow, but the bathroom hot tap flow is fine

    I have been having trouble with my hot water tap in the kitchen lately. The flow rate had been dropping over the past few months to the point where it completely stopped running at all. My boiler is an old hot water cylinder, so water pressure is essentially not meant to be great for the hot...
  10. T

    Banging from hot basin tap when on low flow???

    Hi if anyone could help that would be brilliant. I've got a long banging noise coming from 3 basin mixer taps but only on the hot side when run on a really rate? I was going to change the tap washers but only being on the hot and all 3 I was wondering if someone suspected anything else going on...
  11. M

    Low water pressure/flow

    Hi all, Looking for some help to identify my problem. Basically get poor pressure/flow around the house which is not limited to one faucet etc. Downstairs taps and shower is barely okay then upstairs the shower looses quite a bit of pressure. Outdoor tap also not 100%. I have a unvented system...
  12. B

    Vented vs Unvented in low flow rate flat

    Hi all We currently have a vented system (hot water cylinder, cold water tank above, supplemented by a pump) in our ground floor one bed/one bath flat. We're looking at replacing the system due to age. I've had a couple of quotes from heating engineers who have recommended installing the...
  13. M

    Low Flow Rate

    My downstairs water supply is about 3L/min. I had the water company out today and they have told me that the pressure at the boundary is 3 bar. I live in a new build property - is it possible that there is some kind of restrictor between he mains supply and my stop valve? Would there be...
  14. D

    Low flow

    At a job today customer wants an invented but only has 10lpm on main. Cust is willing to have main up sized, is there a way the water board can test to make sure what the flow rate is like at the boundary to see it's up to it?
  15. N

    Possible Solution To Low Flow rate?

    Hi, I am in the situation where the water pressure at the outside stopcock is 4 Bar with a 30 LPM flow rate. However inside the house I do get 4 bar pressure but through timing how long it takes to fill up a 10 litre bucket I only get 8.2 LMP downstairs and 6.6 upstairs (not sure if this is a...
    • nfl_1990
    • Thread
    • boiler flow flow rate low flow plumber possible pressure situation solution water
    • Replies: 4
    • Forum: Plumbing Jobs | The Job-board
  16. M

    Low flow rate

    Had a call today to look at problems with an installation. vaillant system boiler with unvented, weather comp and solar. Flow rate is right down. The customer is sure it used to be better. Checked at the kitchen sink, 12l/min. Only 15mm incoming but we've got fantastic pressure round this way...
  17. W

    hot water low flow

    Hi I have potterton he 28 since yesterday the hot water flow through the boiler is very low and make whistling/hissing sound coming from the boiler. I turned the boiler off and the flow is still low on the hot tap and still makes a hissing sound. Tried all the hot tap throughout the hose...
  18. K

    Low flow rate and hardly any pressure :)

    Alrighty guys! monday i will be returning to a job to have a better look. the guy has an absolute hard on for having an unvented cylinder but there is sod all pressure or flow rate as it is. flow rate is so low you can't get a dynamic pressure but static is 3 bar tuesday a pipe boring company...
  19. J

    I think I've got low flow rates to bath & basin

    I've just had a new bathroom fitted. Before this the pressure & flow from bath & basin taps were good. Now it is much reduced. The new taps fitted are Crosswater Voyager which are said to be suitable for LP systems. Any suggestions as to what might be causing the problem?
  20. I

    Low flow with Ceraplan basin mixer

    Do the Ideal Standard Ceraplan basin mixers come in HP and LP variants? If so, how do I tell the difference? Photos of the mixer cartridge (p/n A960500NU) often include two other small parts; one blue and one white but I can't find out what these are for. Could these be relevant to the low flow...
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