HydroStat LLC
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Oxygen, CO2, Helium, Argon, Spec Gases, Nitrogen, Nitrous Oxide, and Breathing Air. We can refurbish your cylinders to makes them look brand new again!
We also have Oxygen Filling options available. Call or Email us and lets get started on a quote today! We are a DOT certified hydrostatic high pressure gas cylinder testing company located in Holly Michigan. We can test most cylinders up to 10,000 psi and we specialize in Medical, Industrial, SCUBA, SCBA, Paintball, CO2 and more. We test many types and pressure ratings of Oxygen, CO2, Helium, Argo
05/08/2026
Don't forget this Sunday is Mothers Day!! Let's celebrate all the wonderful mom's out there!
04/21/2026
Scuba season is here! Make sure your tanks are ready to go when you are. Check your dates and get them Hydro tested!
12/12/2025
Happy Friday!! We made it!
Just a quick reminder not only do we offer Hydro Testing for your cylinders but we also offer Valve / Gauge Replacements, Internal Cleaning and Cylinder Refurbishments. We can make your tank or cylinder look Brand New Again!! Comes with Hydro Test Included!
Do you know a company or maybe you are a company that needs Oxygen filling?
Well we definitely have options available to get that done for you too!
Give us a Call or Email us and let's get started on a quote today!
11/26/2025
Today is our annual WorksGiving here at HydroStat. We all bring something to share and gather around the table at lunch time and give thanks and enjoy a great thanksgiving dinner for lunch with each other. It's a HydroStat Tradition! We will be closed thursday and friday to enjoy time with our family and friends but we all want to wish you a Very Great and Happy Thanksgiving!
11/11/2025
Thank You To All Who Have Served, And To All Sill Serving...
❤️🤍💙
11/07/2025
Fall Gear Check Reminder from HydroStat LLC! 🍂
Before you store your Scuba tanks for the winter, make sure they're ready to go when the spring season starts!
Here’s what to check for:
🔍 Hydrostatic Test Date: Cylinders need a new hydro test every 5 years. Look for the date stamped on your tank. If it’s been longer than 5 years, now’s the time to schedule the test.
Keep in mind that hydro testing can be a time-consuming process, so don’t wait until next season starts!
🔍 Visual Inspection (VIP): We can perform this inspection test on your threads to ensure there's zero defects in your threads!
🔧 Bring your tanks to HydroStat LLC for inspections and testing before storing them full for the off-season.
Proper maintenance ensures your gear is ready to dive right into the spring!
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Contact the business
Telephone
Website
Address
203 John Street
Holly, MI
48442
Opening Hours
| Monday | 7am - 3:30am |
| Tuesday | 7am - 3:30pm |
| Wednesday | 7am - 3:30pm |
| Thursday | 7am - 3:30pm |
| Friday | 7am - 3:30pm |