Raytheon are still on the go, making things which go "whoosh....Bang" As seen on TV!
Their valves were made to good standards and have stood the test of time.
Company founded by Vannevar Bush. They have a plant near here in Glenrothes and are opening a new facility in the old Jabil building in Livingston.
https://en.wikipedia.org/wiki/Vannevar_Bush
David