Newbie question regarding vacuum pump kill switch

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Discussion Overview

The discussion revolves around the design and implementation of a vacuum pump system that includes a kill switch to turn off the pump when a certain vacuum level is reached. Participants explore the technical aspects of maintaining vacuum pressure and the components necessary for the setup.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant seeks guidance on literature and components for a vacuum pump that shuts off at a specific vacuum level.
  • Another participant suggests using a vacuum pressure switch but questions the implications of turning off the pump, raising concerns about releasing the vacuum.
  • A participant indicates uncertainty about the exact vacuum level needed and discusses the use of a hand pump they have created, questioning whether the system can maintain vacuum after the pump is switched off.
  • There is a suggestion that an air-tight check valve in the vacuum line could help maintain the vacuum when the pump is off.
  • A later reply expresses gratitude for the suggestions provided.

Areas of Agreement / Disagreement

Participants express differing views on whether it is advisable to switch off the vacuum pump and the implications of doing so. The discussion remains unresolved regarding the best approach to maintain vacuum pressure while incorporating a kill switch.

Contextual Notes

Participants do not specify the exact vacuum level required, and there are assumptions about the air-tightness of the pumping chamber and the functionality of the proposed components.

agonydrum
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I have a project that I've been working on for awhile and I've recently decided to try and upgrade parts of it. However, my knowledge on the subject is pretty sparse. What I want to do is have a vacuum pump which will shut off when my chamber reaches a certain level of vacuum. If anyone could point me in the direction of literature and or parts I will need I would really appreciate it.
 
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Google vacuum pressure switch.

But do you really want to switch the pump off? Won't that release the vacuum? How much vacuum is it?
 
I don't have the exact vacuum i need on hand but it's not much, I've been using a sort of hand pump piston i made until now. Will it? I had assumed that the pumping chamber would be air tight and serve to hold the vacuum until i could seal the valve to the vacuum chamber.

Also would i be able to use a cpld circuit with that?
 
Last edited:
Air-tight checkvalve in the vacuum line would do it.
 
Thank you for your responses I'll check into to both of those suggestions.
 

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