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Question:

Shielded core solenoid valves?

Hey guys. I need help. Sorry this might not go here... but i couldnt find a 'good' category to put it in. This is for an engineering project for college.Im looking for shielded core solenoid valves that can with stand 95-98% sulfuric acid. With this in mind not very many materials are usable, right now we are looking for HDPE (High-density polyethylene).The size of the valves and cost is unimportant. Main thing is finding someone who sells HDPE solenoid valves.For more clarification on what we are looking for, below shows a shielded core solenoid valve from ASCO. The more acidic resistant material they offer however is a FKM. Which can only withstand ~60% sulfuric acid solutions.

Answer:

In practice, engineers do not use solenoid valves directly on chemical or process lines. They are bound to leak and cause danger particularly in your case of 98% sulphuric acid. Use a mechanical valve actuated by a motor (since cost is no issue to you) If an air supply is available, then you can use pneumatic diaphragm valve operated by a solenoid valve. Motorised valve has slower fixed open close time VS faster adjustable open close time for air operated valves.

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