How can I determine the waterpressure in bar on my kitchentap?
Question:I'm looking to buy a kitchentap online. Many of the taps are only suitable for highpressure systems, some say minimum pressure 0.3 or 0.5 bar. Our cold water is on the mains, our hot water is fed from the tank in the attic (about 4,5m above the tap in the kitchen). What does this mean for the pressure of our system?
Answers:
9.8 m in head or height is equivalent to 1 bar pressure so you should have just under 0.5 bar on your hot tap the cold main will not be a prob , only other thing to worry about is the restriction from the tank through your cylinder and pipework to your tap ever time the water goes through a fitting (elbow or tee piece) the pressure drops slighly most people just live with it , if your not happy you can boost your hot supply from the cylinder with a pump single impellor type or go to extremes and fit an unvented cylinder costing about £1200 to supply and fit
7 TO 15 PSI FOR STANDARD HOUSE
You can work it out from - 1bar pressure is about 10m head of water. 1 bar is 14.5 pounds per sq. inch
Don,t confuse pressure with flow. You can have very high pressure flowing from a very small pipe and it would take ages to fill a bucket, but a lot of water from a bigger pipe will work much better. If it is working well now then your tap will probable be OK. I have fitted lots of these and the worst case is that the hot water flow is reduced a bit. The cold water at the kitchen tap is off the mains so will be no problem. If in doubt choose a tap suitable for lower pressure but make sure that the tails to the tap are in 15 mm tube.
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