Manufacturer of "Vented Pipe Cap"

[RJB32482]

We currently have a 6" open ended pipe that we take % oxygen readings off of when purging a vessel with nitrogen. An issue has beeen brought up with asphyxiation hazards due to testing the atmosphere while the vessel is still N2 inerted. We were thinking about a pipe cap with a 1/2 capped vent on it or a 1/2" ball valve on it to take the readings. There is a valve before this cap so there would be isolation when opening the valve or cap.

Our maintenance staff is low and busy so does anyone know a company that makes these things to buy? I'm guessing these types of fittings are standard for other uses?

Thanks in advance.

 

[BigInch]

never seen them sitting on a shelf.

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"Pumping systems account for nearly 20% of the world’s energy used by electric motors and 25% to 50% of the total electrical energy usage in certain industrial facilities." - DOE statistic
"Note: Make that 99.99% for pipeline companies" -

http://virtualpipeline.spaces.live.com/

 

[unclesyd]

You might use a swagged nipple but the cost is rather high. You would be a lot better paying a local fab shop to fabricate one.

http://www.canvil.com/pages/catalogs/snb-p1.htm

As you didn't mention pressure and temperature you might take a look at the this type closure and determine if it suitable.

http://www.cob-industries.com/nylon.htm

 

[Compositepro]

To get a representative sample you must have adequate vent flow when taking the sample. You should take the sample from a tee (or sampling valve) in the vent line and vent the exhaust a safe distance away from the sampling location.