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Armstrong 1/2 in x 3 7/16 in Thermostatic Air-Vent and Vacuum Breaker, FNPT Connection Type - TAVB-2

Marsoni M251S
Sale price$582.86
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Armstrong 1/2 in x 3 7/16 in Thermostatic Air-Vent and Vacuum Breaker, FNPT Connection Type - TAVB-2Stainless Steel Thermostatic Air Vent and Vacuum Breakers, Max. pressure: 150 psi Max. temp.: 365F,Designed to vent air and other noncondensables from vessels such as shell and tube heat exchangers, jacketed kettles, and steam coils. Ideal for steam filled vessels with modulating controls. FNPT connection.
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4.4 ★★★★★
Based on 834 reviews
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Doug Sargent
Fort Morgan, US
★★★★★ 5
Great polos at a great price
Color: Blue/White, Size: Large
Pleasantly surprised at the quality of these shirts. A bit heavier of a fabric then I anticipated but will be perfect for spring and fall. The size (large) was in fact large. :)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
A
Verified Purchase
Amazon Customer
Whiting, US
★★★★★ 1
Avoid. Very thick
Color: Black/Red, Size: Large
Avoid. This is a thick shirt. Can’t wear during summer
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Reviewed in the United States on November 21, 2025
D
Verified Purchase
D. E. Washington
Louisville, US
★★★★★ 5
Nice shirt
Color: Blue/White, Size: X-Large
Nice shirt
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Reviewed in the United States on April 16, 2026
E
Verified Purchase
Erick L.
New York, US
★★★★★ 5
Size up
Color: Teal01, Size: XX-Large
Great color, nice material, I’m usually buy xl but this shirt in 2xl fit terrific. It’s not loose either but just snug enough to look good
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Reviewed in the United States on May 25, 2026
N
Verified Purchase
Nitram
Battle Creek, US
★★★★★ 5
Quality material and perfect fit
Color: Teal01, Size: 4X-Large
Excellent material, soft and stretchy, makes me seem slimmer; great color choices and breathable fabric for warm weather.
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Reviewed in the United States on April 25, 2026

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