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Subject Topic: Can you reduce water pressure? Post Reply Post New Topic
PersonPixie_Hez
10/3/2018 at 2:06pm
 Location: Liverpool
 Outfit: Swift Challenger 560 View Pixie_Hez's Profile View Profile   Reply to Pixie_Hez Reply   Quote Pixie_Hez Quote  
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In our new caravan the water comes out of the tap like a raging torrent. This is annoying in two ways. Firstly, it splashes everywhere when you are trying to wash your hands as the water comes out with such force and secondly, the aquaroll is emptying twice as quickly as in our old caravan as the water comes out with such force it is using the water at a much greater rate. Is there any way that the water pressure can be reduced so that it comes out of the tap with less force?

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Pixie


Persontango55
10/3/2018 at 5:44pm
 Location: Lichfield
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We have exactly the same problem compared to our old caravan regarding filling up the water barrels more frequently and yet the caravan we have now is the same model but five years younger. The only reason I can think of is that our older caravan had independent hot and cold water taps whereas this later model has mixer taps in both the kitchen sink and wash basin. However, we had the water pump inlet port changed from the older Carver Crystal MKII to the Truma Ultraflow one which may have a stronger pump delivery.


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Personcheckley1973
10/3/2018 at 6:25pm
 Location: Sheffield
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Depends on which pump make you have. Some do a couple of flow rate options such as whale.


PersonPixie_Hez
10/3/2018 at 6:31pm
 Location: Liverpool
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It is a flojet pump in a swift challenger.

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Pixie


PersonJohnnie Boy
10/3/2018 at 7:19pm
 Location: Cleveland
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If it was me I would try putting a valve in the discharge line and throttling it back a bit, but I like messing on with stuff.

Then you may have problems with the pressure switch, only assuming... but it's a new van then I would think it will be a no no.


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Personmadasaman
10/3/2018 at 9:34pm
 Location:  Wales
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Quote: Originally posted by Pixie_Hez on 10/3/2018
It is a flojet pump in a swift challenger.


Water pump pressure
switch adjustment
Pressure Switch Adjustment, Truma/Flo-Jet
pump. (Normally Grey upper section with
White lower section/valve housing)
• All of the Truma/Flo-Jet pumps used by Swift
are pre-set at 28psi + / -3psi.
• To further adjust the pressure switch setting,
a cover cap must be first be removed from
the end of the pump to reveal a pressure
adjusting screw, as shown in the photos.
A maximum of 1/4 turn clockwise or
anti-clockwise, from the factory setting, is
advised. Turning the screw clockwise 1/4
turn will increase the pressure switch cut-out
pressure, turning the screw anti-clockwise
will reduce the pressure setting.
• Please note a second screw mounted
below the cover cap is set in position with
threadlock, this should not be disturbed.

Adjusting screw is at bottom of pump, usually pump needs removal to gain access. On page 62/63 of my Challenger sport hand book.

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73 going on 25
Beauty is in the eye of the beerholder


PersonPixie_Hez
11/3/2018 at 9:06am
 Location: Liverpool
 Outfit: Swift Challenger 560 View Pixie_Hez's Profile View Profile   Reply to Pixie_Hez Reply   Quote Pixie_Hez Quote  
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Hi madasaman. I was under the impression that the pressure switch adjustment on the pump itself was to adjust the pressure at which the pump shuts off rather than to regulate the flow of water out of the taps. Have I got this wrong? I want to decrease the flow of water out of the taps. Does the pressure switch adjustment on the pump also affect this?

-------------
Pixie


Personcheckley1973
11/3/2018 at 10:10am
 Location: Sheffield
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Quote: Originally posted by Pixie_Hez on 11/3/2018
Hi madasaman. I was under the impression that the pressure switch adjustment on the pump itself was to adjust the pressure at which the pump shuts off rather than to regulate the flow of water out of the taps. Have I got this wrong? I want to decrease the flow of water out of the taps. Does the pressure switch adjustment on the pump also affect this?


That’s my understanding too. I wouldn’t think the pressure switch will affect flow rate.


Persontango55
11/3/2018 at 10:21am
 Location: Lichfield
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Quote: Originally posted by Pixie_Hez on 11/3/2018
Hi madasaman. I was under the impression that the pressure switch adjustment on the pump itself was to adjust the pressure at which the pump shuts off rather than to regulate the flow of water out of the taps. Have I got this wrong? I want to decrease the flow of water out of the taps. Does the pressure switch adjustment on the pump also affect this?


No, you haven't got it wrong as the pressure switch does exactly that. The flow of water is determined by the flow rate of the water pump connected to the caravan. Some of the later water pumps do deliver more quantity of water per minute merely because the older pumps were not powerful enough to supply water to the shower head effectively which is the highest point in the fresh water system.


Personmadasaman
12/3/2018 at 8:49am
 Location:  Wales
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surely the discharge rate out of the taps is dependant on the pressure in the system, hence if you reduce pressure flow will be reduced as well. Same as if system is pressurized and pump turned off, flow at taps will diminish as pressure falls.Probably wrong,but that is my take on it.

-------------
73 going on 25
Beauty is in the eye of the beerholder


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PersonJohnnie Boy
12/3/2018 at 10:35am
 Location: Cleveland
 Outfit: Swift select 164 View Johnnie Boy's Profile View Profile   Reply to Johnnie Boy Reply   Quote Johnnie Boy Quote  
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To decrease the the flow rate you need to put a restriction in the line (valve) this will increase the pressure at the pump but decrease flow rate down side of the valve and along with the friction losses in the line you will have less flow and pressure when you open the tap.

Valve cost less than a tenner, takes about a minute to fit.. pair of garden secateurs snip pipe and push fit the valve... if you have a problem with the pump pressure sensor just leave the valve open.



Personmadasaman
12/3/2018 at 11:12am
 Location:  Wales
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Or don't open the tap fully and use the tap as a restrictor

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73 going on 25
Beauty is in the eye of the beerholder



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