A pressure below atmospheric pressure. A perfect vacuum is 30 inches of mercury (periodic symbol “Hg”)
ยซ Back to Glossary Index
Northwest Expert
Menu
Menu
Office Hours
Monday - Friday
8:00 am - 5:00 pm
8:00 am - 5:00 pm
Review Us On
Payments
© 2024 Northwest Expert Heating, Cooling, and Electrical Sitemap / Privacy Policy / Accessibility Statement
Designed & Developed By :ย 
