Ok guys i have a project, i need to design a spring to operate

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>>1137571
>Wax Thermostatic Element

https://en.m.wikipedia.org/wiki/Wax_thermostatic_element

Working on a project is fine, just don't let this distract you from the fact that in 1998 The Undertaker threw Mankind off Hell In A Cell, and plummeted 16 ft through an announcer's table.

that wrestling match will forever be the best.

>>1137580
you misunderstood the question. this is OPs mechanical engineering university assignment.

the point is to get OP to learn how to make a spring by understanding the properties of a material under load.

>>1137571
do your homework OP

>>1137571
Atmosphere or cvs? Safety valve meaning it's manually controlled or a relief valve that's automatic?

>>1137631
But i dont get it

>>1137804
To the best of my knowledge it will automatically open based on the temperature

>>1137831
Then study, you fuck. Google is your friend, your textbook is your friend, we are not. How do you expect to be successful in life if you can't think critically and solve your own problems?

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>>1138006
>How do you expect to be successful in life if you can't think critically and solve your own problems?
give him a break, OP sucks cock to pay the bills and he wants to do mechE to get some cash on the side

>>1137571
Like the other guys said do your own damn research. There are plenty of resources for the materials science you need to find

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>>1137571
You came to the wrong place. Your question implies you know more about this than 99% of people here. Face it - this is DIY, it is filled with retards who have no idea what a safety valve even is, as implied by the very first answer.

What you probably know - the area is proportional to the force acting on the spring, F = P*A. The spring behaves according too Hooke's law, F=k*deltaH, H being the height, k the constant. You just assume some diameter intuitively and make the calculations for that to figure out the constant. How to design springs is well outlined in "Machinery's handbook". If it is for an assignment, I recommend you follow that, if not, just look through spring catalogues and copy a design in regards to the dimensions. Corrosion is most probably simply offset by adding a bit of material here and there depending on the enviroment or by selecting a non corrosive material. Temperature - just make sure it still works after thermal expansion.

>>1138189
Thank you this is more like the answer i was looking for, you have been great help

>>1137832
We only deal with pressure relief, so I can't help with that. Metal could be vastly different depending on the product in the vessel. Stainless steel has become the new choice for caustic and acid lines in my field, for example. Honestly, you may be able to check some manufacturer websites to compare what they have for certain applications. I've recently heard of PTFE lined relief valves for corrosion resistance. We don't use those here, we mostly use acids in situations where it's injected in small batches at low pressures.

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>>1137571
>having /diy/ do your engineering homework