Originally Posted by
Ted Menelly
The actual history. I cannot believe no one called me on this.
Sture Ericson developed the air admittance valve in Sweden in the early 1970s. He introduced the valve to the United States in 1986 and was instrumental in the development of of the ASSE Performance Standards 1050 and 1051, as well as gaining code approvals in state and model codes. In 1988, Studor, INc. was established as the distributor for North America. Studor, Inc. was acquired by IPS Corporation in 1998.
Actual history continued:
I have talked with Stu several times in years past. On the phone several times and once or twice in person. That said, I could see him today, if still alive, and not have any idea whom I was talking to unless I was told it was him (i.e., I did not 'get to know him', just talked with him).
Getting back to the other post comment ... I repeat:
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It is "intended for that purpose".
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