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# Surface Area Calculation for Valve

05/07/2017 10:49 PM

how can I calculate outer surface area of gate valve? Are there any formulae?

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#1

### Re: SURFACE AREA CALCULATION FOR VALVE

05/07/2017 11:39 PM

That's pretty simple-

Now, if it's a square shaped valve body, then it's L x H

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#2

### Re: SURFACE AREA CALCULATION FOR VALVE

05/07/2017 11:45 PM

Valves are not two-dimensional objects.

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#3

### Re: SURFACE AREA CALCULATION FOR VALVE

05/07/2017 11:47 PM

!. Basic geometry.

2. Don't shout with all-caps.

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#4

### Re: SURFACE AREA CALCULATION FOR VALVE

05/08/2017 12:13 AM
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#5

### Re: SURFACE AREA CALCULATION FOR VALVE

05/08/2017 2:55 AM

Weight the paint tin. Paint it. Weigh the paint tin. The difference in weights divided by the application rate is the area of the valve.

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#6

### Re: SURFACE AREA CALCULATION FOR VALVE

05/08/2017 3:26 AM

Oh dear, that'll force him/her into a paint thickness gauge.

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#7

### Re: SURFACE AREA CALCULATION FOR VALVE

05/08/2017 3:58 AM

Quite. Formulae? Pah!

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#14

### Re: SURFACE AREA CALCULATION FOR VALVE

05/10/2017 12:52 AM

Why are you painting the paint tin???

Sorry couldn't resist although to be fair whenever I paint stuff I usually paint the tin, myself and other stuff as well.

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#15

### Re: SURFACE AREA CALCULATION FOR VALVE

05/10/2017 10:37 AM

He's not from around here. Folks with that speech impediment make can or bucket sound like tin when they say it.

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#8

### Re: Surface Area Calculation for Valve

05/08/2017 12:20 PM

Why do you want to know this?...

Have you checked any valve-specific manufacturer's data yet?...

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#9

### Re: Surface Area Calculation for Valve

05/08/2017 1:45 PM

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#10

### Re: Surface Area Calculation for Valve

05/08/2017 2:00 PM
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#11

### Re: Surface Area Calculation for Valve

05/08/2017 3:27 PM

Why? When it provides no real specs on the valve function.

But if you must in finding the area of an irregular shape. Divid the the shape up into regular shapes that you can measure. Compute the area of those regular shapes. Then add them up.

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#12

### Re: Surface Area Calculation for Valve

05/09/2017 10:29 AM

Never mind.

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#13

### Re: Surface Area Calculation for Valve

05/09/2017 3:33 PM

Just curious: why do you need to know the surface area? Are you planning to paint a bunch of valves and need to estimate the amount of paint to order?

If so, and going along the lines of PWSlack's recommendation above, see how many you can adequately paint (with the required number of coats) using a known amount of paint, and then extrapolate from there.

As an example, say you need one litre of paint to coat 30 valves (you've not indicated their size) and you've 20,000 valves to paint:

total paint required = 1 litre x 20000/30 = 667 litres (plus some additional for re-work, etc.)

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