Sight-glasses for ammonia

[Krzysztof]

Hello everyone. This is my first post in this forum.

I've got one question if in ammonia refrigeration we use sight glasses for checking if the liquid which flows to expansion valve hasn't got any vapour.

If we use sight glasses, will You help me to find some companys websites which produce such of sight glasses.

Thanks for an answer.

PS. If I made some language mistakes, please, forgive me. I don't know English very well

[Tycho]

My company produce sightglasses you can use in ammonia.

they are available in DN25 for welding, or 10mm with ermeto couplings (these can be cut off and the sightglass can be welded in place. But I always use the ermeto couplings for ease if they need to be changed or cleaned.

You can look up contact details at http://www.mmctendos.no/cgi-bin/weba...id=2104&c=1104