Measureing Static Head

[mark_j_k]

a

 

[chrishutt]

The static head at any point in the system will be equivalent to the height of the water level in the feed tank above that point.

 

[Agile]

Standard grade 3 cylinders are rated for a head of 10 m.

Thats suitable for any two story property and possibly for many three story properties.

Tony

 

[chrishutt]

I've come across a few cylinders where the concave bottom section has gone convex as a result of excess pressure.

 

[doitall]

I've come across a few cylinders where the concave bottom section has gone convex as a result of excess pressure.

There's one sat in my stores Chris

A big 6ft jobbie.

 

[Bahco]

There's one sat in my stores

A big 6ft jobbie.

Get it weighed in at the scrappy

 

[TicklyT]

The static head is the vertical difference between the water surface of the cold water storage (say the overflow outlet) and the base of the hot cylinder. It may be expressed in Metres head, or in pressure (Bar)

Or in feet of head (if that makes any sense) or pounds per square inch for those of us who still use the old money.

For practical applications, 1 bar = 1 atmosphere = 10 Metre head = 33 feet = 14.5 PSI

 

[mark_j_k]

Thankyou very much to all that have replied, you've been most helpful.

Mark.

 

[sanj.varah]

technically speaking the pressure is

P = Density (998) x Gravity (9.81) x Height (m)

where height is typically to the top of your header tank.

This will give you a pressure in Pascals. divide this pressure by 100,000. and you'll have your pressure in bar.

 

[John M]

I've come across a few cylinders where the concave bottom section has gone convex as a result of excess pressure.

Its a bugger having to dig out the floor to make them stand up straight innit