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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. B

    Low flow rate low pressure

    I recently changed a set of taps in an upstairs flat it has a hot water cylinder with Immersion heater all electric no rads etc what can I do? I didn't drain the cylinder only turned mains stop tap off and turned bath taps on to drain the water ? Any ideas keep seeing 'faucet' but the new taps...
  2. S

    low flow rate

    hi guys, ok, heres the deal.. im about to start work on .large 4 bed property, will have main bath with mixer shower and two en suite with electric shower plus full 15 rad heating system... had ss water out and only getting 18 litres a min on street so a new main wont help with the 16 litres a...
  3. L

    low flow rate on very old ravenheat combi!

    had to replace an old ravenheat combi today a week ahead of schedule as it had decided to flood the kitchen. Customers informed me it has always had a poor flowrate and no one could explain why. Long story short, out with the old and in with and intergas combi, set it up for HW only and did a...
  4. J

    Grohe low flow rate

    I recently installed a Grohe basin mixer tap (Eurodisc Cosmo) which Grohe advertise as suitable for low pressure systems. It only delivers 3.5litre/min at a head of 0.25 bar (2.5m). I've been in touch with Grohe and they confirm that this is the flow rate to be expected from their LP mixer taps...
  5. I

    Worcester Bosch Heatslave - hot water is cold at low flow.

    Hi, I've a Worcester Bosch Heatslave which is generally working well, however, if I turn a hot tap on a bit (rather than full blast) the hot water runs warm to begin with while it empties the heated reserve but the boiler doesn't fire and the water eventually runs stone cold. If I turn the flow...
  6. M

    Low flow rate

    Hi guys can I have some advice pls. I am renovating a house have 3 toilets 2 bathrooms inc 2 showers 1 bath. I would like a combi boiler/mega flow set up, but I only have 2 bars pressure, 1.5 bar working pressure, and the flow rate is 13 lpm. we are 50m from the street main, is the any device...
  7. D

    Pump for Bath Mixer with low flow rate?

    I've just replaced my bath and bath mixer with hand shower attachment. The hot water is gravity fed with low pressure (about 2 metres head), the cold is mains fed. The hot water flow rate is about 4 litres a minute, so it's too slow for a bath! Is in possible to fit a pump on the hot water feed...
  8. C

    Low flow from hot tap

    Hi all, I have just popped over from the electricians forum hoping to get some help. I have a swan neck style mixer tap on a kitchen sink on a gravity fed system that was fitted about 6 months ago. The cold water flow is fine but the hot water has slowed down by about half. I have removed the...
  9. C

    worcester 28i junior NEW low flow rate

    have fitted a a worcester 28i junior for a customer over the last 3 days removing conventional system, and coverting to a combi in the the utility room, used existing flow and returns for central heating and conected hot and cold into the pipes under work surface for utility sink, ran a new...
  10. B

    Salamander pumps

    We have a salamander pump ESP CV on negative head as it feeds a an upstairs shower washbasin and toilet that are higher than the two water tanks from mains. Recently the toilet keeps stopping and starting the pump ie it is hutning - not necessarily at the end of the cistern filling cycle. The...
  11. GQuigley67

    high inlet pressure at meter

    my girlfriend just moved into a new house and today i was removing the fire, and when i done my usual checks i thought I'd check the inlet pressure as the Boiler kept on cutting off, think it was the pilot light going out. The Pressure at the Meter is 25mbar, is this 2 high?
  12. C

    Hot water low flow throughout the house (not combi boiler)

    Hi all, New to this forum... but for a reason. I am living in rented and the house has a boiler downstairs and storage upstairs (floor level upstairs). I noticed when we moved in that the hot water in the kitchen (downstairs) had low water flow and when the cold water was opened, the hot...
  13. G

    Ideal isar HE 24 Banging

    I have been to an Ideal isar HE 24 which is banging and locking out. I listened to continuous run of fault from customer about this boiler which was from wormfront. I am familiar with the isar and some of the problems but this one has got me stumped, any HTG engineers advice greatly appreciated...
  14. M

    halstead 60 best

    ignition lockout - runs full power for 10 minutes then locks out resets - overheat is not lighting up. was thinking air pressure switch? any thoughts as it does run for a while before locking out.
  15. I

    How can I turn my underfloor heating on?

    Hi, I bought an apartment recently that has underfloor heating installed, I've never really had to use it over the last few months since it's been warm and the apartment is very well insulated, however it's a bit chilly tonight so I thought I'd turn it on and see what it's like and have...
  16. A

    booster pump for outside taps

    A client of mine wants the pressure and flor to his garden taps boosted. around 5 outside taps and approx 60m of burried pipe (20mm od with a 8mm approx id). the taps are currently fed direct off the mains but he has lowish mains pressure (joys of living on top of a hill). i havent gone into...
  17. W

    Low hot flow from mixer tap

    I have a mixer tap in the bathroom and had very little flow coming from it compared to the the cold, I had the washer replaced ( so i was told ) and it seemed to improved but only slighly. Now the problem is here again, why would i be getting low flow? Any help appreciated.
  18. cr0ft

    Electric Shower Problem

    Just had a potential customer get in touch with me. They have just fitted their own electric shower and are stating that the temperature keeps cycling from hot to cold. As it's new, I suspect the problem may be that the mains pressure is lower than the minimum needed to operate the shower...
  19. J

    Tap flow

    I fitted some new ceramic taps to my bathroom sink. At low flow the water the water doesn't come out in nice column but randomly all over the place. This seems to be because of the plastic spreader thing at the outlet, if I remove it its fine. Why would this be and is it OK to just remove them...
  20. D

    British Gas C1 problem - please help!

    I have a British Gas C1 boiler. There are three lights with symbols on the boiler - one to indicate the heater is on (a flame symbol), one to indicate that radiator water is being heated (a radiator symbol) and one to indicate that the hot water is being heated for the taps (a tap symbol). It...
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