21-11-2021, 11:20 AM
You can buy high quality vacuum pumps for automotive servicing. Amazon sells a variety of them. You can also buy them at an automotive store.
Here is a link to the Amazon hand pump for $20
https://www.amazon.com/Automotive-Protected-Adapters-One-Man-Bleeding/dp/B08GZTNNGR/ref=sr_1_1_sspa?crid=384QDEA5V4XM1&keywords=automotive+hand+vacuum+pump&qid=1637489901&sprefix=automotive+hand+vacuum%2Caps%2C170&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEyWDgzNjNOQ1dSOUwwJmVuY3J5cHRlZElkPUEwOTQwNzg0QUtNSEtNM1lQVkxDJmVuY3J5cHRlZEFkSWQ9QTAzMTE2OTczMFFMT09aMVpHVVRVJndpZGdldE5hbWU9c3BfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==