newbie question about pipe sizes

[pioneeruk]

hi guys,

i have a question which is really bugging me, ive just started the 6129 city and guilds so please be nice, im not the brightest of guys however i do wanna learn, anyways the question:

lets say on oneside i had a pipe of 22mm coming down vertically then horizontally in 15mm to a tap
and on the other side
i had a pipe of 22mm coming down vertically then horizontally in 22mm to a tap
now which of the 2 examples above would give me more pressure? lets say there both coming down equal height etc.

Reason am asking this is i just want to know if the reduction of the pipe diameter will make any difference in the pressure of the water coming out of the tap.

i hope ive made sense :S


thank you

 

[Ged Simpson]

It used to be a lot easier when we had different water i.e. one foot hieght of water = .434 pounds per square foot, now that was a lot more understandable

1 foot height of water is equivalent to 0.434 pounds per square inch (not square foot)

 

[dontknowitall]

what are the plumbers main testing equipment?
are they:

1. water pressure gauge?
2. Dry pipe test gauge?
3. weir gauge?

cheers guys

Fingers, when turning water back on (ensuring fitting is dry). Use these everyday.

You'll use the others (obviously depending on how busy you are) about:

1. 1-2 times a year
2. 6-10 times a year
3. Once a year