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Sheet thickness
The indicated thicknesses are theoretical thicknesses. However, Steekflens will always use the standard trade plate thicknesses. As a result, the thickness of the blindspades could end up being higher than the theoretical thicknesses.
When machining the flanges (e.g. gasket surfaces), Blindspades and Spectacle blinds can be delivered in 2 (welded) parts.
Welding complies with ASME B 16.48-2010 chapter 4.1
Entry blockers
Use entry blockers to clearly and safely indicate that a manway is not accessible. Thanks to the solid construction in steel or plastic, these blockers remain firmly in place and cannot be blown away or easily removed.
What is an entry blocker?
In many cases, red/white tape is used to indicate that a manway cannot be used as an access point. Unfortunately, tape often blows away or is ignored. With an entry blocker from Blindspades.com, you are assured of a safe and highly visible closure. Our steel entry blocker stays securely in place while equipment or tanks can still be vented. In addition, our plastic entry blocker offers the possibility to use a manway as an emergency exit.
Buy entry blockers from the specialist?
Are you looking for a high-quality entry blocker? Look no further and choose Blindspades.com. Our team specializes in the sale of entry blockers and more. We provide expert advice on the purchase and application of our products.
Looking for other products?
In addition to standard DIN, ANSI and JIS flanges, Blindspades.com also offers a wide range of other flanges. These include spectacle blinds, drain flanges and blind flanges. Our range also includes various additional products such as flange gaskets, valves and spray guards.
What is an entry blocker and what is it used for?
An entry blocker is fitted to a manhole to indicate that it is not accessible. Unlike red and white tape, which can blow away or be ignored, an entry blocker stays firmly in place and is clearly visible.
What is the difference between the steel and plastic versions?
The steel entry blocker stays in place while equipment or tanks are venting. The plastic version additionally allows the manhole to be used as an escape route.
Which sizes of entry blocker are available?
The steel entry blocker is available for manholes from 16" to 28" in the 150# pressure class. The plastic version fits manholes from 12" to 32".
Can an entry blocker be used while a tank or piece of equipment is still venting?
Yes, this is possible with the steel version. The blocker stays in place while the manhole is not yet fully open for access.