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Mark II Sentinel Vacuum Regulator
Mark II Sentinel Vacuum Regulator
Mark II Sentinel Vacuum Regulator
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Mark II Sentinel Vacuum Regulator

Marsoni M251S
Sale price$157.50
Pay 4 payments of $39.38 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Mark II Sentinel Vacuum RegulatorThe MKII Sentinel Vacuum Controller is appropriate for installations where airflow does not exceed 150 CFM ASME and features direct sensing that is sensitive to 0. 1" hg of change in vacuum pressure. Featuring ABS housings and top dome and main filter, the Mark II may be adjusted between 10" and 15". 2" Female NPT mounting connections. Overall dimensions 6" in diameter and 11 1 4" high. Wt. 1 1 4 lbs.
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  • Fast: 2-3 business days
  • Express: 1-2 business days

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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 1324 reviews
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Product Reviews
H
Verified Purchase
HB
New York, US
★★★★★ 5
Good quality, but likely holds water.
Good quality and was easy to install on base with two bolt lengths provided. I modifed by drilling a small hole through the base of the pole mount so that water can drain out. I have previously ended up with a rotten wooden umbrella pole because the pole mount held water!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
D
Verified Purchase
Don B.
Charlottesville, US
★★★★★ 5
This is the one to buy
It was the perfect replacement heavy duty constructed and able to take different size umbrellas.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 24, 2025
R
Verified Purchase
Robi
Omaha, US
★★★★★ 4
Good fit, but loosens easily
Fit perfect but the wind blowing makes the whole umbrella move the part enough to loosen it so continually having to tighten, which is a pain since you have to do so from the bottom of the base.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2025
E
Verified Purchase
Ed
Charlottesville, US
★★★★★ 5
works for me!
Seems much higher quality than the original, install is simple, and I like that there are 2 screws for hold the umbrella tight and straight
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 7, 2025
J
Verified Purchase
JeepGuy
Draper, US
★★★★★ 5
Great replacement mount.
Great replacement that comes with 2 different inserts. Easy to replace our rusted out one.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026

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