Abstract: A threaded interface includes a male threaded body and a female threaded body. The male threaded body includes a threaded section with external threads and a seal section with a plurality of o-rings seated circumferentially around the threaded body. The female threaded body includes a threaded section with internal threads and a seal section. The seal section of the female threaded body sealingly engages the o-rings of the seal section of the mail threaded body. A pressure vessel and a pressure vessel assembly for an automatic fire extinguishing system incorporating the threaded interface are also disclosed.

Abstract: An exemplary suppressant actuator assembly includes a release member movable from a first position that restricts flow of a suppressant to a second position that permits flow of a suppressant. A biasing member moves from a more-biased position to a less-biased position to move the release member from the first position to the second position. A solenoid is activated to permit movement of the biasing member.