Free Vents Model 4000 & 4100

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Technical Data

Sesco SKU:tp-033 Category: Brand:

Available on backorder


The Models 4000 and 4100 are designed to be used on tanks containing non-volatile liquids. Free Vents offer efficient flow capacity to protect the tank from positive or negative overpressure. They allow vapors to flow freely in and out of the storage tank.
The 4000 and 4100 are designed to protect against
rain, dirt, insects and other foreign matter from
entering the vent.
Available in aluminum, carbon steel and stainless


Features & Benefits
• Free Vents are built of corrrosion resistant materials. A wire mesh screen prevents foreign matter from entering the tank or pipe opening.
• Convient 150 lb. flange connections for quick and easy installation
• Every Free Vent is factory inspected to meet all critical requirements and special needs.
• Rugged forged design provides years of trouble free service life.
• Available in API, ANSI, DIN and JIS flanges.


Vent Flange Sizes
Sizes available for the Series 4000 & 4100 are 50mm(2 in), 80mm(3 in.), 100mm(4 in.), 150mm(6 in.), 200 mm(8 in.), 250(10 in.), and 300 (12 in.)

For details see the technical sheet (.pdf) in the description above.