Standard USA NH
The National Fire Protection Association (NFPA) is a United States trade association, albeit with some international members, that creates and maintains private, copyrighted, standards and codes for usage and adoption by local governments.
This includes publications from model building codes to the many on equipment utilized by firefighters while engaging in hazardous material (hazmat) response, rescue response, and some firefighting.
We have many products with NH connection for the USA market and all of them have the NFPA standards.
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Fire valve with NST thread
|1”1/2 NH x 1″1/2 Gas, PN 12||1″1/2 Gas|
|2”1/2 NH x 2″1/2 Gas, PN 16||2″1/2 Gas|